Free AWS ANS-C02 Practice Questions & Answers 2026 Part5

Question #1

A data analytics company has a 100-node high performance computing (HPC) cluster. The HPC cluster is for parallel data processing and is hosted in a VPC in the AWS Cloud. As part of the data processing workflow, the HPC cluster needs to perform several DNS queries to resolve and connect to Amazon RDS databases, Amazon S3 buckets, and on-premises data stores that are accessible through AWS Direct Connect. The HPC cluster can increase in size by five to seven times during the company's peak event at the end of the year.The company is using two Amazon EC2 instances as primary DNS servers for the VPC. The EC2 instances are configured to forward queries to the default VPC resolver for Amazon Route 53 hosted domains and to the on- premises DNS servers for other on-premises hosted domain names. The company notices job failures and finds that DNS queries from the HPC cluster nodes failed when the nodes tried to resolve RDS and S3 bucket endpoints.Which architectural change should a network engineer implement to provide the DNS service in the MOST scalable way?

A. Scale out the DNS service by adding two additional EC2 instances in the VPC

B. Scale up the existing EC2 instances that the company is using as DNS servers

C. Create Route 53 Resolver outbound endpoints

D. Create Route 53 Resolver inbound endpoints

View answer

Correct Answer: C

Question #2

A security team is performing an audit of a company's AWS deployment. The security team is concerned that two applications might be accessing resources that should be blocked by network ACLs and security groups. The applications are deployed across two Amazon Elastic Kubernetes Service (Amazon EKS) clusters that use the Amazon VPC Container Network Interface (CNI) plugin for Kubernetes. The clusters are in separate subnets within the same VPC and have a Cluster Autoscaler configured.The security team needs to determine which POD IP addresses are communicating with which services throughout the VPC. The security team wants to limit the number of flow logs and wants to examine the traffic from only the two applications.Which solution will meet these requirements with the LEAST operational overhead?

A. Create VPC flow logs in the default format

B. Create VPC flow logs in a custom format

C. Create VPC flow logs in a custom format

D. Create VPC flow logs in a custom format

View answer

Correct Answer: C

Question #3

A company is migrating its containerized application to AWS. For the architecture the company will have an ingress VPC with a Network Load Balancer (NLB) to distribute the traffic to front-end pods in an Amazon Elastic Kubernetes Service (Amazon EKS) cluster. The front end of the application will determine which user is requesting access and will send traffic to 1 of 10 services VPCs. Each services VPC will include an NLB that distributes traffic to the services pods in an EKS cluster.The company is concerned about overall cost. User traffic will be responsible for more than 10 TB of data transfer from the ingress VPC to services VPCs every month. A network engineer needs to recommend how to design the communication between the VPCs.Which solution will meet these requirements at the LOWEST cost?

A. Create a transit gateway

B. Create an AWS PrivateLink endpoint in every Availability Zone in the ingress VPC

C. Create a VPC peering connection between the ingress VPC and each of the 10 services VPCs

D. Create a transit gateway

View answer

Correct Answer: C

Question #4

A company is creating new features for its ecommerce website. These features will use several microservices that are accessed through different paths. The microservices will run on Amazon Elastic Container Service (Amazon ECS). The company requires the use of HTTPS for all of its public websites. The application requires the customer's source IP addresses.A network engineer must implement a load balancing strategy that meets these requirements.Which combination of actions should the network engineer take to accomplish this goal? (Choose two.)

A. Use a Network Load Balancer

B. Retrieve client IP addresses by using the X-Forwarded-For header

C. Use AWS App Mesh load balancing

D. Retrieve client IP addresses by using the X-IP-Source header

E. Use an Application Load Balancer

View answer

Correct Answer: BE

Question #5

A company is planning to create a service that requires encryption in transit. The traffic must not be decrypted between the client and the backend of the service. The company will implement the service by using the gRPC protocol over TCP port 443. The service will scale up to thousands of simultaneous connections. The backend of the service will be hosted on an Amazon Elastic Kubernetes Service (Amazon EKS) duster with the Kubernetes Cluster Autoscaler and the Horizontal Pod Autoscaler configured. The company needs to use mutual TLS for two - way authentication between the client and the backend. Which solution will meet these requirements?

A. Install the AWS Load Balancer Controller for Kubernetes

B. Install the AWS Load Balancer Controller for Kubernetes

C. Create a target group

D. Create a target group

View answer

Correct Answer: B

Question #6

A company is migrating its containerized application to AWS. For the architecture the company will have an ingress VPC with a Network Load Balancer (NLB) to distribute the traffic to front-end pods in an Amazon Elastic Kubernetes Service (Amazon EKS) cluster. The front end of the application will determine which user is requesting access and will send traffic to 1 of 10 services VPCs. Each services VPC will include an NLB that distributes traffic to the services pods in an EKS cluster.The company is concerned about overall cost. User traffic will be responsible for more than 10 TB of data transfer from the ingress VPC to services VPCs every month. A network engineer needs to recommend how to design the communication between the VPCs.Which solution will meet these requirements at the LOWEST cost?

A. Create a transit gateway

B. Create an AWS PrivateLink endpoint in every Availability Zone in the ingress VPC

C. Create a VPC peering connection between the ingress VPC and each of the 10 services VPCs

D. Create a transit gateway

View answer

Correct Answer: C

Question #7

A network engineer needs to set up an Amazon EC2 Auto Scaling group to run a Linux-based network appliance in a highly available architecture. The network engineer is configuring the new launch template for the Auto Scaling group.In addition to the primary network interface the network appliance requires a second network interface that will be used exclusively by the application to exchange traffic with hosts over the internet. The company has set up a Bring Your Own IP (BYOIP) pool that includes an Elastic IP address that should be used as the public IP address for the second network interface.How can the network engineer implement the required architecture?

A. Configure the two network interfaces in the launch template

B. Configure the primary network interface in a private subnet in the launch template

C. Create an AWS Lambda function to run as a lifecycle hook of the Auto Scaling group when an instance is launching

D. During creation of the Auto Scaling group, select subnets for the primary network interface

View answer

Correct Answer: D

Question #8

A company is deploying a new application in the AWS Cloud. The company wants a highly available web server that will sit behind an Elastic Load Balancer. The load balancer will route requests to multiple target groups based on the URL in the request. All traffic must use HTTPS. TLS processing must be offloaded to the load balancer. The web server must know the user’s IP address so that the company can keep accurate logs for security purposes.Which solution will meet these requirements?

A. eploy an Application Load Balancer with an HTTPS listener

B. eploy an Application Load Balancer with an HTTPS listener for each domain

C. eploy a Network Load Balancer with a TLS listener

D. eploy a Network Load Balancer with a TLS listener for each domain

View answer

Correct Answer: A

Question #9

A banking company is successfully operating its public mobile banking stack on AWS. The mobile banking stack is deployed in a VPC that includes private subnets and public subnets. The company is using IPv4 networking and has not deployed or supported IPv6 in the environment. The company has decided to adopt a third-party service provider's API and must integrate the API with the existing environment. The service provider’s API requires the use of IPv6.A network engineer must turn on IPv6 connectivity for the existing workload that is deployed in a private subnet. The company does not want to permit IPv6 traffic from the public internet and mandates that the company's servers must initiate all IPv6 connectivity. The network engineer turns on IPv6 in the VPC and in the private subnets.Which solution will meet these requirements?

A. Create an internet gateway and a NAT gateway in the VPC

B. Create an internet gateway and a NAT instance in the VPC

C. Create an egress-only Internet gateway in the VPAdd a route to the existing subnet route tables to point IPv6 traffic to the egress-only internet gateway

D. Create an egress-only internet gateway in the VPC

View answer

Correct Answer: C

Question #10

A company has stateful security appliances that are deployed to multiple Availability Zones in a centralized shared services VPC. The AWS environment includes a transit gateway that is attached to application VPCs and the shared services VPC. The application VPCs have workloads that are deployed in private subnets across multiple Availability Zones. The stateful appliances in the shared services VPC inspect all east west (VPC-to-VPC) traffic.Users report that inter-VPC traffic to different Availability Zones is dropping. A network engineer verified this claim by issuing Internet Control Message Protocol (ICMP) pings between workloads in different Availability Zones across the application VPCs. The network engineer has ruled out security groups, stateful device configurations and network ACLs as the cause of the dropped traffic.What is causing the traffic to drop?

A. The stateful appliances and the transit gateway attachments are deployed in a separate subnet in the shared services VPC

B. Appliance mode is not enabled on the transit gateway attachment to the shared services VPC

C. The stateful appliances and the transit gateway attachments are deployed in the same subnet in the shared services VP

D. Appliance mode is not enabled on the transit gateway attachment to the application VPCs

View answer

Correct Answer: B

Question #11

A company is planning to create a service that requires encryption in transit. The traffic must not be decrypted between the client and the backend of the service. The company will implement the service by using the gRPC protocol over TCP port 443. The service will scale up to thousands of simultaneous connections. The backend of the service will be hosted on an Amazon Elastic Kubernetes Service (Amazon EKS) duster with the Kubernetes Cluster Autoscaler and the Horizontal Pod Autoscaler configured. The company needs to use mutual TLS for two-way authentication between the client and the backend.Which solution will meet these requirements?

A. Install the AWS Load Balancer Controller for Kubernetes

B. Install the AWS Load Balancer Controller for Kubernetes

C. Create a target group

D. Create a target group

View answer

Correct Answer: A

Question #12

A company is deploying AWS Cloud WAN with edge locations in the us-east-1 Region and the ap-southeast-2 Region. Individual AWS Cloud WAN segments are configured for the development environment, the production environment, and the shared services environment at each edge location. Many new VPCs will be deployed for the environments and will be configured as attachments to the AWS Cloud WAN core network.The company's network team wants to ensure that VPC attachments are configured for the correct segment. The network team will tag the VPC attachments by using the Environment key with a value of the corresponding environment segment name. The segment for the production environment in us-east-1 must require acceptance for attachment requests. AH other attachment requests must not require acceptance.Which solution will meet these requirements?

A. Create a rule with a number of 100 that requires acceptance for attachments to the production segment

B. Create a rule with a number of 100 that requires acceptance for attachments to the production segment

C. Create a rule with a number of 100 that does not require acceptance to map any tag:Environment values to their respective segments

D. Create a rule with a number of 100 that does not require acceptance to map any tag:Environment values to their respective segments Create a rule with a number of 200 that requires acceptance for attachments to the production segment

View answer

Correct Answer: B

Question #13

A network engineer needs to update a company's hybrid network to support IPv6 for the upcoming release of a new application. The application is hosted in a VPC in the AWS Cloud. The company's current AWS infrastructure includes VPCs that are connected by a transit gateway. The transit gateway is connected to the on-premises network by AWS Direct Connect and AWS Site-to-Site VPN. The company's on-premises devices have been updated to support the new IPv6 requirements.The company has enabled IPv6 for the existing VPC by assigning a new IPv6 CIDR block to the VPC and by assigning IPv6 to the subnets for dual-stack support. The company has launched new Amazon EC2 instances for the new application in the updated subnets.When updating the hybrid network to support IPv6 the network engineer must avoid making any changes to the current infrastructure. The network engineer also must block direct access to the instances' new IPv6 addresses from the internet. However, the network engineer must allow outbound internet access from the instances.What is the MOST operationally efficient solution that meets these requirements?

A. Update the Direct Connect transit VIF and configure BGP peering with the AWS assigned IPv6 peering address

B. Update the Direct Connect transit VIF and configure BGP peering with the AWS assigned IPv6 peering address

C. Create a Direct Connect transit VIF and configure BGP peering with the AWS assigned IPv6 peering address

D. Create a Direct Connect transit VIF and configure BGP peering with the AWS assigned IPv6 peering address

View answer

Correct Answer: A

Question #14

A company has deployed a critical application on a fleet of Amazon EC2 instances behind an Application LoadBalancer. The application must always be reachable on port 443 from the public internet. The application recently had an outage that resulted from an incorrect change to the EC2 security group.A network engineer needs to automate a way to verify the network connectivity between the public internet and the EC2 instances whenever a change is made to the security group. The solution also must notify the network engineer when the change affects the connection.Which solution will meet these requirements?

A. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture REJECT traffic on port 443

B. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture all traffic on port 443

C. Create a VPC Reachability Analyzer path on port 443

D. Create a VPC Reachability Analyzer path on port 443

View answer

Correct Answer: D

Question #15

A data analytics company has a 100-node high performance computing (HPC) cluster. The HPC cluster is for parallel data processing and is hosted in a VPC in the AWS Cloud. As part of the data processing workflow, the HPC cluster needs to perform several DNS queries to resolve and connect to Amazon RDS databases, Amazon S3 buckets, and on-premises data stores that are accessible through AWS Direct Connect. The HPC cluster can increase in size by five to seven times during the company's peak event at the end of the year.The company is using two Amazon EC2 instances as primary DNS servers for the VPC. The EC2 instances are configured to forward queries to the default VPC resolver for Amazon Route 53 hosted domains and to the on- premises DNS servers for other on-premises hosted domain names. The company notices job failures and finds that DNS queries from the HPC cluster nodes failed when the nodes tried to resolve RDS and S3 bucket endpoints.Which architectural change should a network engineer implement to provide the DNS service in the MOST scalable way?

A. Scale out the DNS service by adding two additional EC2 instances in the VPC

B. Scale up the existing EC2 instances that the company is using as DNS servers

C. Create Route 53 Resolver outbound endpoints

D. Create Route 53 Resolver inbound endpoints

View answer

Correct Answer: C

Question #16

A company is planning a migration of its critical workloads from an on-premises data center to Amazon EC2 instances. The plan includes a new 10 Gbps AWS Direct Connect dedicated connection from the on-premises data center to a VPC that is attached to a transit gateway. The migration must occur over encrypted paths between the on-premises data center and the AWS Cloud.Which solution will meet these requirements while providing the HIGHEST throughput?

A. Configure a public VIF on the Direct Connect connection

B. Configure a transit VIF on the Direct Connect connection

C. Configure MACsec for the Direct Connect connection

D. Configure a public VIF on the Direct Connect connection

View answer

Correct Answer: C

Question #17

A data analytics company has a 100-node high performance computing (HPC) cluster. The HPC cluster is for parallel data processing and is hosted in a VPC in the AWS Cloud. As part of the data processing workflow, the HPC cluster needs to perform several DNS queries to resolve and connect to Amazon RDS databases, Amazon S3 buckets, and on-premises data stores that are accessible through AWS Direct Connect. The HPC cluster can increase in size by five to seven times during the company's peak event at the end of the year.The company is using two Amazon EC2 instances as primary DNS servers for the VPC. The EC2 instances are configured to forward queries to the default VPC resolver for Amazon Route 53 hosted domains and to the on- premises DNS servers for other on-premises hosted domain names. The company notices job failures and finds that DNS queries from the HPC cluster nodes failed when the nodes tried to resolve RDS and S3 bucket endpoints.Which architectural change should a network engineer implement to provide the DNS service in the MOST scalable way?

A. Scale out the DNS service by adding two additional EC2 instances in the VPC

B. Scale up the existing EC2 instances that the company is using as DNS servers

C. Create Route 53 Resolver outbound endpoints

D. Create Route 53 Resolver inbound endpoints

View answer

Correct Answer: C

Question #18

A security team is performing an audit of a company's AWS deployment. The security team is concerned that two applications might be accessing resources that should be blocked by network ACLs and security groups. The applications are deployed across two Amazon Elastic Kubernetes Service (Amazon EKS) clusters that use the Amazon VPC Container Network Interface (CNI) plugin for Kubernetes. The clusters are in separate subnets within the same VPC and have a Cluster Autoscaler configured.The security team needs to determine which POD IP addresses are communicating with which services throughout the VPC. The security team wants to limit the number of flow logs and wants to examine the traffic from only the two applications.Which solution will meet these requirements with the LEAST operational overhead?

A. Create VPC flow logs in the default format

B. Create VPC flow logs in a custom format

C. Create VPC flow logs in a custom format

D. Create VPC flow logs in a custom format

View answer

Correct Answer: C

Question #19

A data analytics company has a 100-node high performance computing (HPC) cluster. The HPC cluster is for parallel data processing and is hosted in a VPC in the AWS Cloud. As part of the data processing workflow, the HPC cluster needs to perform several DNS queries to resolve and connect to Amazon RDS databases, Amazon S3 buckets, and on-premises data stores that are accessible through AWS Direct Connect. The HPC cluster can increase in size by five to seven times during the company's peak event at the end of the year.The company is using two Amazon EC2 instances as primary DNS servers for the VPC. The EC2 instances are configured to forward queries to the default VPC resolver for Amazon Route 53 hosted domains and to the on- premises DNS servers for other on-premises hosted domain names. The company notices job failures and finds that DNS queries from the HPC cluster nodes failed when the nodes tried to resolve RDS and S3 bucket endpoints.Which architectural change should a network engineer implement to provide the DNS service in the MOST scalable way?

A. Scale out the DNS service by adding two additional EC2 instances in the VPC

B. Scale up the existing EC2 instances that the company is using as DNS servers

C. Create Route 53 Resolver outbound endpoints

D. Create Route 53 Resolver inbound endpoints

View answer

Correct Answer: C

Question #20

A company's development team has created a new product recommendation web service. The web service is hosted in a VPC with a CIDR block of 192.168.224.0/19. The company has deployed the web service on Amazon EC2 instances and has configured an Auto Scaling group as the target of a Network Load Balancer (NLB).The company wants to perform testing to determine whether users who receive product recommendations spend more money than users who do not receive product recommendations. The company has a big sales event in 5 days and needs to integrate its existing production environment with the recommendation engine by then. The existing production environment is hosted in a VPC with a CIDR block of 192.168.128 0/17.A network engineer must integrate the systems by designing a solution that results in the least possible disruption to the existing environments.Which solution will meet these requirements?

A. reate a VPC peering connection between the web service VPC and the existing production VPC

B. sk the development team of the web service to redeploy the web service into the production VPC and integrate the systems there

C. reate a VPC endpoint service

D. reate a transit gateway in the existing production environment

View answer

Correct Answer: C

Question #21

A software company offers a software-as-a-service (SaaS) accounting application that is hosted in the AWS Cloud The application requires connectivity to the company's on-premises network. The company has two redundant 10 GB AWS Direct Connect connections between AWS and its on-premises network to accommodate the growing demand for the application.The company already has encryption between its on-premises network and the colocation. The company needs to encrypt traffic between AWS and the edge routers in the colocation within the next few months. The company must maintain its current bandwidth.What should a network engineer do to meet these requirements with the LEAST operational overhead?

A. Deploy a new public VIF with encryption on the existing Direct Connect connections

B. Create a virtual private gateway Deploy new AWS Site-to-Site VPN connections from on premises to the virtual private gateway Reroute traffic from the Direct Connect private VIF to the new VPNs

C. Deploy a new pair of 10 GB Direct Connect connections with MACsec

D. Deploy a new pair of 10 GB Direct Connect connections with MACsec

View answer

Correct Answer: C

Question #22

A company is creating new features for its ecommerce website. These features will use several microservices that are accessed through different paths. The microservices will run on Amazon Elastic Container Service (Amazon ECS). The company requires the use of HTTPS for all of its public websites. The application requires the customer's source IP addresses.A network engineer must implement a load balancing strategy that meets these requirements.Which combination of actions should the network engineer take to accomplish this goal? (Choose two.)

A. Use a Network Load Balancer

B. Retrieve client IP addresses by using the X-Forwarded-For header

C. Use AWS App Mesh load balancing

D. Retrieve client IP addresses by using the X-IP-Source header

E. Use an Application Load Balancer

View answer

Correct Answer: BE

Question #23

A company has two on-premises data center locations. There is a company-managed router at each data center. Each data center has a dedicated AWS Direct Connect connection to a Direct Connect gateway through a private virtual interface. The router for the first location is advertising 110 routes to the Direct Connect gateway by using BGP, and the router for the second location is advertising 60 routes to the Direct Connect gateway by using BGP. The Direct Connect gateway is attached to a company VPC through a virtual private gateway.A network engineer receives reports that resources in the VPC are not reachable from various locations in either data center. The network engineer checks the VPC route table and sees that the routes from the firstdata center location are not being populated into the route table. The network engineer must resolve this issue in the most operationally efficient manner.What should the network engineer do to meet these requirements?

A. Remove the Direct Connect gateway, and create a new private virtual interface from each company router to the virtual private gateway of the VPC

B. Change the router configurations to summarize the advertised routes

C. Open a support ticket to increase the quota on advertised routes to the VPC route table

D. Create an AWS Transit Gateway

View answer

Correct Answer: B

Question #24

A company is migrating its containerized application to AWS. For the architecture the company will have an ingress VPC with a Network Load Balancer (NLB) to distribute the traffic to front-end pods in an Amazon Elastic Kubernetes Service (Amazon EKS) cluster. The front end of the application will determine which user is requesting access and will send traffic to 1 of 10 services VPCs. Each services VPC will include an NLB that distributes traffic to the services pods in an EKS cluster.The company is concerned about overall cost. User traffic will be responsible for more than 10 TB of data transfer from the ingress VPC to services VPCs every month. A network engineer needs to recommend how to design the communication between the VPCs.Which solution will meet these requirements at the LOWEST cost?

A. Create a transit gateway

B. Create an AWS PrivateLink endpoint in every Availability Zone in the ingress VPC

C. Create a VPC peering connection between the ingress VPC and each of the 10 services VPCs

D. Create a transit gateway

View answer

Correct Answer: C

Question #25

A gaming company is planning to launch a globally available game that is hosted in one AWS Region. The game backend is hosted on Amazon EC2 instances that are part of an Auto Scaling group.The game uses the gRPC protocol for bidirectional streaming between game clients and the backend. The company needs to filter incoming traffic based on the source IP address to protect the game.Which solution will meet these requirements?

A. Configure an AWS Global Accelerator accelerator with an Application Load Balancer (ALB) endpoint

B. Configure an AWS Global Accelerator accelerator with a Network Load Balancer (NLB) endpoint

C. Configure an Amazon CloudFront distribution with an Application Load Balancer (ALB) endpoint

D. Configure an Amazon CloudFront distribution with a Network Load Balancer (NLB) endpoint

View answer

Correct Answer: a

Question #26

A company has deployed Amazon EC2 instances in private subnets in a VPC. The EC2 instances must initiate any requests that leave the VPC, including requests to the company's on-premises data center over an AWS Direct Connect connection. No resources outside the VPC can be allowed to open communications directly to the EC2 instances.The on-premises data center's customer gateway is configured with a stateful firewall device that filters for incoming and outgoing requests to and from multiple VPCs. In addition, the company wants to use a single IP match rule to allow all the communications from the EC2 instances to its data center from a single IP address.Which solution will meet these requirements with the LEAST amount of operational overhead?

A. Create a VPN connection over the Direct Connect connection by using the on-premises firewall

B. Configure the on-premises firewall to filter all requests from the on-premises network to the EC2 instances

C. Deploy a NAT gateway into a private subnet in the VPC where the EC2 instances are deployed

D. Deploy a NAT instance into a private subnet in the VPC where the EC2 instances are deployed

View answer

Correct Answer: C

Question #27

A company has stateful security appliances that are deployed to multiple Availability Zones in a centralized shared services VPC. The AWS environment includes a transit gateway that is attached to application VPCs and the shared services VPC. The application VPCs have workloads that are deployed in private subnets across multiple Availability Zones. The stateful appliances in the shared services VPC inspect all east west (VPC-to-VPC) traffic.Users report that inter-VPC traffic to different Availability Zones is dropping. A network engineer verified this claim by issuing Internet Control Message Protocol (ICMP) pings between workloads in different Availability Zones across the application VPCs. The network engineer has ruled out security groups, stateful device configurations and network ACLs as the cause of the dropped traffic.What is causing the traffic to drop?

A. The stateful appliances and the transit gateway attachments are deployed in a separate subnet in the shared services VPC

B. Appliance mode is not enabled on the transit gateway attachment to the shared services VPC

C. The stateful appliances and the transit gateway attachments are deployed in the same subnet in the shared services VP

D. Appliance mode is not enabled on the transit gateway attachment to the application VPCs

View answer

Correct Answer: B

Question #28

A company is migrating its containerized application to AWS. For the architecture the company will have an ingress VPC with a Network Load Balancer (NLB) to distribute the traffic to front-end pods in an Amazon Elastic Kubernetes Service (Amazon EKS) cluster. The front end of the application will determine which user is requesting access and will send traffic to 1 of 10 services VPCs. Each services VPC will include an NLB that distributes traffic to the services pods in an EKS cluster.The company is concerned about overall cost. User traffic will be responsible for more than 10 TB of data transfer from the ingress VPC to services VPCs every month. A network engineer needs to recommend how to design the communication between the VPCs.Which solution will meet these requirements at the LOWEST cost?

A. reate a transit gateway

B. reate an AWS PrivateLink endpoint in every Availability Zone in the ingress VPC

C. reate a VPC peering connection between the ingress VPC and each of the 10 services VPCs

D. reate a transit gateway

View answer

Correct Answer: C

Question #29

A company's network engineer is designing an active-passive connection to AWS from two on-premises data centers. The company has set up AWS Direct Connect connections between the on-premises data centers and AWS. From each location, the company is using a transit VIF that connects to a Direct Connect gateway that is associated with a transit gateway.The network engineer must ensure that traffic from AWS to the data centers is routed first to the primary data center. The traffic should be routed to the failover data center only in the case of an outage.Which solution will meet these requirements?

A. Set the BGP community tag for all prefixes from the primary data center to 7224:7100

B. Set the BGP community tag for all prefixes from the primary data center to 7224:7300

C. Set the BGP community tag for all prefixes from the primary data center to 7224:9300

D. Set the BGP community tag for all prefixes from the primary data center to 7224:9100

View answer

Correct Answer: B

Question #30

A company has deployed a critical application on a fleet of Amazon EC2 instances behind an Application LoadBalancer. The application must always be reachable on port 443 from the public internet. The application recently had an outage that resulted from an incorrect change to the EC2 security group.A network engineer needs to automate a way to verify the network connectivity between the public internet and the EC2 instances whenever a change is made to the security group. The solution also must notify the network engineer when the change affects the connection.Which solution will meet these requirements?

A. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture REJECT traffic on port 443

B. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture all traffic on port 443

C. Create a VPC Reachability Analyzer path on port 443

D. Create a VPC Reachability Analyzer path on port 443

View answer

Correct Answer: D

Question #31

A company has deployed a critical application on a fleet of Amazon EC2 instances behind an Application LoadBalancer. The application must always be reachable on port 443 from the public internet. The application recently had an outage that resulted from an incorrect change to the EC2 security group.A network engineer needs to automate a way to verify the network connectivity between the public internet and the EC2 instances whenever a change is made to the security group. The solution also must notify the network engineer when the change affects the connection.Which solution will meet these requirements?

A. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture REJECT traffic on port 443

B. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture all traffic on port 443

C. Create a VPC Reachability Analyzer path on port 443

D. Create a VPC Reachability Analyzer path on port 443

View answer

Correct Answer: D

Question #32

A company has deployed a critical application on a fleet of Amazon EC2 instances behind an Application LoadBalancer. The application must always be reachable on port 443 from the public internet. The application recently had an outage that resulted from an incorrect change to the EC2 security group.A network engineer needs to automate a way to verify the network connectivity between the public internet and the EC2 instances whenever a change is made to the security group. The solution also must notify the network engineer when the change affects the connection.Which solution will meet these requirements?

A. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture REJECT traffic on port 443

B. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture all traffic on port 443

C. Create a VPC Reachability Analyzer path on port 443

D. Create a VPC Reachability Analyzer path on port 443

View answer

Correct Answer: D

Question #33

A company has stateful security appliances that are deployed to multiple Availability Zones in a centralized shared services VPC. The AWS environment includes a transit gateway that is attached to application VPCs and the shared services VPC. The application VPCs have workloads that are deployed in private subnets across multiple Availability Zones. The stateful appliances in the shared services VPC inspect all east west (VPC-to-VPC) traffic.Users report that inter-VPC traffic to different Availability Zones is dropping. A network engineer verified this claim by issuing Internet Control Message Protocol (ICMP) pings between workloads in different Availability Zones across the application VPCs. The network engineer has ruled out security groups, stateful device configurations and network ACLs as the cause of the dropped traffic.What is causing the traffic to drop?

A. The stateful appliances and the transit gateway attachments are deployed in a separate subnet in the shared services VPC

B. Appliance mode is not enabled on the transit gateway attachment to the shared services VPC

C. The stateful appliances and the transit gateway attachments are deployed in the same subnet in the shared services VP

D. Appliance mode is not enabled on the transit gateway attachment to the application VPCs

View answer

Correct Answer: B

Question #34

A company has multiple AWS Site-to-Site VPN connections between an on-premises environment and multiple VPCs. The Site-to-Site VPN connections use virtual private gateways and are configured with IPv4 addresses. The company hosts several internal applications in the VPCs. Application users have reported that the applications are performing slowly. A network engineer notices excessive latency in the network path that the VPN connections use. The network engineer needs to resolve the excessive latency. Which solution will meet this requirement? Transit Gateway for Centralized Routing: A transit gateway centralizes the management and routing of multiple Site-to-Site VPN connections. It helps optimize network paths and reduce latency by avoiding the need for direct peering between each VPC and on-premises. Accelerated Site-to-Site VPN: AWS accelerated Site-to-Site VPN connections use AWS Global Accelerator to reduce latency by leveraging the AWS global network to route traffic more efficiently. This significantly improves the performance of the applications. Supports Existing IPv4 Configuration: Accelerated VPNs can work with IPv4 addresses, allowing the company to address latency without requiring migration to IPv6, which would introduce additional complexity.

A. Use AWS Global Accelerator to deploy an accelerator on the existing Site-to-Site VPN connections

B. Deploy a transit gateway and a new accelerated Site-to-Site VPN connection

C. Replace the existing Site-to-Site VPN connections with new Site-to-Site VPN connections that use IPv6

D. Replace the existing Site-to-Site VPN connections with AWS PrivateLink connections

View answer

Correct Answer: B

Question #35

A company has hundreds of Amazon EC2 instances that are running in two production VPCs across all Availability Zones in the us-east-1 Region. The production VPCs are named VPC A and VPC B.A new security regulation requires all traffic between production VPCs to be inspected before the traffic is routed to its final destination. The company deploys a new shared VPC that contains a stateful firewall appliance and a transit gateway with a VPC attachment across all VPCs to route traffic between VPC A and VPC B through the firewall appliance for inspection. During testing, the company notices that the transit gateway is dropping the traffic whenever the traffic is between two Availability Zones.What should a network engineer do to fix this issue with the LEAST management overhead?

A. In the shared VPC, replace the VPC attachment with a VPN attachment

B. Enable transit gateway appliance mode on the VPC attachment in VPC A and VPC

C. Enable transit gateway appliance mode on the VPC attachment in the shared VP

D. In the shared VPC, configure one VPC peering connection to VPC A and another VPC peering connection to VPC B

View answer

Correct Answer: C

Question #36

A company has deployed a software-defined WAN (SD-WAN) solution to interconnect all of its offices. The company is migrating workloads to AWS and needs to extend its SD-WAN solution to support connectivity to these workloads.A network engineer plans to deploy AWS Transit Gateway Connect and two SD-WAN virtual appliances to provide this connectivity. According to company policies, only a single SD-WAN virtual appliance can handle traffic from AWS workloads at a given time.How should the network engineer configure routing to meet these requirements?

A. dd a static default route in the transit gateway route table to point to the secondary SD-WAN virtual appliance

B. onfigure the BGP community tag 7224:7300 on the primary SD-WAN virtual appliance for BGP routes toward the transit gateway

C. onfigure the AS_PATH prepend attribute on the secondary SD-WAN virtual appliance for BGP routes toward the transit gateway

D. isable equal-cost multi-path (ECMP) routing on the transit gateway for Transit Gateway Connect

View answer

Correct Answer: C

Question #37

A company is migrating its containerized application to AWS. For the architecture the company will have an ingress VPC with a Network Load Balancer (NLB) to distribute the traffic to front-end pods in an Amazon Elastic Kubernetes Service (Amazon EKS) cluster. The front end of the application will determine which user is requesting access and will send traffic to 1 of 10 services VPCs. Each services VPC will include an NLB that distributes traffic to the services pods in an EKS cluster.The company is concerned about overall cost. User traffic will be responsible for more than 10 TB of data transfer from the ingress VPC to services VPCs every month. A network engineer needs to recommend how to design the communication between the VPCs.Which solution will meet these requirements at the LOWEST cost?

A. Create a transit gateway

B. Create an AWS PrivateLink endpoint in every Availability Zone in the ingress VPC

C. Create a VPC peering connection between the ingress VPC and each of the 10 services VPCs

D. Create a transit gateway

View answer

Correct Answer: C

Question #38

A company is migrating its containerized application to AWS. For the architecture the company will have an ingress VPC with a Network Load Balancer (NLB) to distribute the traffic to front-end pods in an Amazon Elastic Kubernetes Service (Amazon EKS) cluster. The front end of the application will determine which user is requesting access and will send traffic to 1 of 10 services VPCs. Each services VPC will include an NLB that distributes traffic to the services pods in an EKS cluster.The company is concerned about overall cost. User traffic will be responsible for more than 10 TB of data transfer from the ingress VPC to services VPCs every month. A network engineer needs to recommend how to design the communication between the VPCs.Which solution will meet these requirements at the LOWEST cost?

A. Create a transit gateway

B. Create an AWS PrivateLink endpoint in every Availability Zone in the ingress VPC

C. Create a VPC peering connection between the ingress VPC and each of the 10 services VPCs

D. Create a transit gateway

View answer

Correct Answer: C

Question #39

A company's network engineer needs to design a new solution to help troubleshoot and detect network anomalies. The network engineer has configured Traffic Mirroring. However, the mirrored traffic is overwhelming the Amazon EC2 instance that is the traffic mirror target. The EC2 instance hosts tools that the company's security team uses to analyze the traffic. The network engineer needs to design a highly available solution that can scale to meet the demand of the mirrored traffic.Which solution will meet these requirements?

A. Deploy a Network Load Balancer (NLB) as the traffic mirror target

B. Deploy an Application Load Balancer (ALB) as the traffic mirror target

C. Deploy a Gateway Load Balancer (GLB) as the traffic mirror target

D. Deploy an Application Load Balancer (ALB) with an HTTPS listener as the traffic mirror target

View answer

Correct Answer: A

Question #40

A company's network engineer is designing an active-passive connection to AWS from two on-premises data centers. The company has set up AWS Direct Connect connections between the on-premises data centers and AWS. From each location, the company is using a transit VIF that connects to a Direct Connect gateway that is associated with a transit gateway.The network engineer must ensure that traffic from AWS to the data centers is routed first to the primary data center. The traffic should be routed to the failover data center only in the case of an outage.Which solution will meet these requirements?

A. Set the BGP community tag for all prefixes from the primary data center to 7224:7100

B. Set the BGP community tag for all prefixes from the primary data center to 7224:7300

C. Set the BGP community tag for all prefixes from the primary data center to 7224:9300

D. Set the BGP community tag for all prefixes from the primary data center to 7224:9100

View answer

Correct Answer: B

Question #41

A security team is performing an audit of a company's AWS deployment. The security team is concerned that two applications might be accessing resources that should be blocked by network ACLs and security groups. The applications are deployed across two Amazon Elastic Kubernetes Service (Amazon EKS) clusters that use the Amazon VPC Container Network Interface (CNI) plugin for Kubernetes. The clusters are in separate subnets within the same VPC and have a Cluster Autoscaler configured.The security team needs to determine which POD IP addresses are communicating with which services throughout the VPC. The security team wants to limit the number of flow logs and wants to examine the traffic from only the two applications.Which solution will meet these requirements with the LEAST operational overhead?

A. Create VPC flow logs in the default format

B. Create VPC flow logs in a custom format

C. Create VPC flow logs in a custom format

D. Create VPC flow logs in a custom format

View answer

Correct Answer: C

Question #42

A company is creating new features for its ecommerce website. These features will use several microservices that are accessed through different paths. The microservices will run on Amazon Elastic Container Service (Amazon ECS). The company requires the use of HTTPS for all of its public websites. The application requires the customer's source IP addresses.A network engineer must implement a load balancing strategy that meets these requirements.Which combination of actions should the network engineer take to accomplish this goal? (Choose two.)

A. Use a Network Load Balancer

B. Retrieve client IP addresses by using the X-Forwarded-For header

C. Use AWS App Mesh load balancing

D. Retrieve client IP addresses by using the X-IP-Source header

E. Use an Application Load Balancer

View answer

Correct Answer: BE

Question #43

A data analytics company has a 100-node high performance computing (HPC) cluster. The HPC cluster is for parallel data processing and is hosted in a VPC in the AWS Cloud. As part of the data processing workflow, the HPC cluster needs to perform several DNS queries to resolve and connect to Amazon RDS databases, Amazon S3 buckets, and on-premises data stores that are accessible through AWS Direct Connect. The HPC cluster can increase in size by five to seven times during the company's peak event at the end of the year.The company is using two Amazon EC2 instances as primary DNS servers for the VPC. The EC2 instances are configured to forward queries to the default VPC resolver for Amazon Route 53 hosted domains and to the on- premises DNS servers for other on-premises hosted domain names. The company notices job failures and finds that DNS queries from the HPC cluster nodes failed when the nodes tried to resolve RDS and S3 bucket endpoints.Which architectural change should a network engineer implement to provide the DNS service in the MOST scalable way?

A. Scale out the DNS service by adding two additional EC2 instances in the VPC

B. Scale up the existing EC2 instances that the company is using as DNS servers

C. Create Route 53 Resolver outbound endpoints

D. Create Route 53 Resolver inbound endpoints

View answer

Correct Answer: C

Question #44

A company hosts an application on Amazon EC2 instances behind an Application Load Balancer (ALB). The company recently experienced a network security breach. A network engineer must collect and analyze logs that include the client IP address, target IP address, target port, and user agent of each user that accesses the application.What is the MOST operationally efficient solution that meets these requirements?

A. Configure the ALB to store logs in an Amazon S3 bucket

B. Configure the ALB to push logs to Amazon Kinesis Data Streams

C. Configure Amazon Kinesis Data Streams to stream data from the ALB to Amazon OpenSearch Service (Amazon Elasticsearch Service)

D. Configure the ALB to store logs in an Amazon S3 bucket

View answer

Correct Answer: C

Question #45

A company has multiple AWS accounts. Each account contains one or more VPCs. A new security guideline requires the inspection of all traffic between VPCs.The company has deployed a transit gateway that provides connectivity between all VPCs. The company also has deployed a shared services VPC with Amazon EC2 instances that include IDS services for stateful inspection. The EC2 instances are deployed across three Availability Zones. The company has set up VPC associations and routing on the transit gateway. The company has migrated a few test VPCs to the new solution for traffic inspection.Soon after the configuration of routing, the company receives reports of intermittent connections for traffic that crosses Availability Zones.What should a network engineer do to resolve this issue?

A. Modify the transit gateway VPC attachment on the shared services VPC by enabling cross-Availability Zone load balancing

B. Modify the transit gateway VPC attachment on the shared services VPC by enabling appliance mode support

C. Modify the transit gateway by selecting VPN equal-cost multi-path (ECMP) routing support

D. Modify the transit gateway by selecting multicast support

View answer

Correct Answer: C

Question #46

A company's network engineer is designing an active-passive connection to AWS from two on-premises data centers. The company has set up AWS Direct Connect connections between the on-premises data centers and AWS. From each location, the company is using a transit VIF that connects to a Direct Connect gateway that is associated with a transit gateway.The network engineer must ensure that traffic from AWS to the data centers is routed first to the primary data center. The traffic should be routed to the failover data center only in the case of an outage.Which solution will meet these requirements?

A. Set the BGP community tag for all prefixes from the primary data center to 7224:7100

B. Set the BGP community tag for all prefixes from the primary data center to 7224:7300

C. Set the BGP community tag for all prefixes from the primary data center to 7224:9300

D. Set the BGP community tag for all prefixes from the primary data center to 7224:9100

View answer

Correct Answer: B

Question #47

A global company operates all its non-production environments out of three AWS Regions: eu-west-1, us-east- 1, and us-west-1. The company hosts all its production workloads in two on-premises data centers. The company has 60 AWS accounts and each account has two VPCs in each Region. Each VPC has a virtual private gateway where two VPN connections terminate for resilient connectivity to the data centers. The company has 360 VPN tunnels to each data center, resulting in high management overhead. The total VPN throughput for each Region is 500 Mbps.The company wants to migrate the production environments to AWS. The company needs a solution that will simplify the network architecture and allow for future growth. The production environments will generate an additional 2 Gbps of traffic per Region back to the data centers. This traffic will increase over time.Which solution will meet these requirements?

A. Set up an AWS Direct Connect connection from each data center to AWS in each Region

B. Create a single transit gateway with VPN connections from each data center

C. Create a transit gateway in each Region with multiple newly commissioned VPN connections from each data center

D. Peer all the VPCs in each Region to a new VPC in each Region that will function as a centralized transit VPC

View answer

Correct Answer: C

Question #48

A company has deployed an AWS Network Firewall firewall into a VPC. A network engineer needs to implement a solution to deliver Network Firewall flow logs to the company's Amazon OpenSearch Service (Amazon Elasticsearch Service) cluster in the shortest possible time.Which solution will meet these requirements?

A. Create an Amazon S3 bucket

B. Create an Amazon Kinesis Data Firehose delivery stream that includes the Amazon OpenSearch Service (Amazon Elasticsearch Service) cluster as the destination

C. Configure flow logs for the firewall

D. Create an Amazon Kinesis data stream that includes the Amazon OpenSearch Service (Amazon Elasticsearch Service) cluster as the destination

View answer

Correct Answer: B

Question #49

A company's network engineer is designing an active-passive connection to AWS from two on-premises data centers. The company has set up AWS Direct Connect connections between the on-premises data centers and AWS. From each location, the company is using a transit VIF that connects to a Direct Connect gateway that is associated with a transit gateway.The network engineer must ensure that traffic from AWS to the data centers is routed first to the primary data center. The traffic should be routed to the failover data center only in the case of an outage.Which solution will meet these requirements?

A. Set the BGP community tag for all prefixes from the primary data center to 7224:7100

B. Set the BGP community tag for all prefixes from the primary data center to 7224:7300

C. Set the BGP community tag for all prefixes from the primary data center to 7224:9300

D. Set the BGP community tag for all prefixes from the primary data center to 7224:9100

View answer

Correct Answer: B

Question #50

A company is using custom DNS servers that run BIND for name resolution in its VPCs. The VPCs are deployed across multiple AWS accounts that are part of the same organization in AWS Organizations. All the VPCs are connected to a transit gateway. The BIND servers are running in a central VPC and are configured to forward all queries for an on-premises DNS domain to DNS servers that are hosted in an on-premises data center. To ensure that all the VPCs use the custom DNS servers, a network engineer has configured a VPC DHCP options set in all the VPCs that specifies the custom DNS servers to be used as domain name servers.Multiple development teams in the company want to use Amazon Elastic File System (Amazon EFS). A development team has created a new EFS file system but cannot mount the file system to one of its Amazon EC2 instances. The network engineer discovers that the EC2 instance cannot resolve the IP address for theEFS mount point fs-33444567d.efs.us-east-1.amazonaws.com. The network engineer needs to implement a solution so that development teams throughout the organization can mount EFS file systems.Which combination of steps will meet these requirements? (Choose two.)

A. Configure the BIND DNS servers in the central VPC to forward queries for efs

B. Create an Amazon Route 53 Resolver outbound endpoint in the central VPC

C. Create an Amazon Route 53 Resolver inbound endpoint in the central VP Update all the VPC DHCP options sets to use the Route 53 Resolver inbound endpoint in the central VPC for name resolution

D. Create an Amazon Route 53 Resolver rule to forward queries for the on-premises domain to the on- premises DNS servers

E. Create an Amazon Route 53 private hosted zone for the efs

View answer

Correct Answer: BD

Question #51

A company has hundreds of Amazon EC2 instances that are running in two production VPCs across all Availability Zones in the us-east-1 Region. The production VPCs are named VPC A and VPC B.A new security regulation requires all traffic between production VPCs to be inspected before the traffic is routed to its final destination. The company deploys a new shared VPC that contains a stateful firewall appliance and a transit gateway with a VPC attachment across all VPCs to route traffic between VPC A and VPC B through the firewall appliance for inspection. During testing, the company notices that the transit gateway is dropping the traffic whenever the traffic is between two Availability Zones.What should a network engineer do to fix this issue with the LEAST management overhead?

A. In the shared VPC, replace the VPC attachment with a VPN attachment

B. Enable transit gateway appliance mode on the VPC attachment in VPC A and VPC

C. Enable transit gateway appliance mode on the VPC attachment in the shared VP

D. In the shared VPC, configure one VPC peering connection to VPC A and another VPC peering connection to VPC B

View answer

Correct Answer: C

Question #52

A company's development team has created a new product recommendation web service. The web service is hosted in a VPC with a CIDR block of 192.168.224.0/19. The company has deployed the web service on Amazon EC2 instances and has configured an Auto Scaling group as the target of a Network Load Balancer (NLB).The company wants to perform testing to determine whether users who receive product recommendations spend more money than users who do not receive product recommendations. The company has a big sales event in 5 days and needs to integrate its existing production environment with the recommendation engine by then. The existing production environment is hosted in a VPC with a CIDR block of 192.168.128.A network engineer must integrate the systems by designing a solution that results in the least possible disruption to the existing environments.Which solution will meet these requirements?

A. Create a VPC peering connection between the web service VPC and the existing production VPC

B. Ask the development team of the web service to redeploy the web service into the production VPC and integrate the systems there

C. Create a VPC endpoint service

D. Create a transit gateway in the existing production environment

View answer

Correct Answer: C

Question #53

A company has deployed a critical application on a fleet of Amazon EC2 instances behind an Application LoadBalancer. The application must always be reachable on port 443 from the public internet. The application recently had an outage that resulted from an incorrect change to the EC2 security group.A network engineer needs to automate a way to verify the network connectivity between the public internet and the EC2 instances whenever a change is made to the security group. The solution also must notify the network engineer when the change affects the connection.Which solution will meet these requirements?

A. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture REJECT traffic on port 443

B. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture all traffic on port 443

C. Create a VPC Reachability Analyzer path on port 443

D. Create a VPC Reachability Analyzer path on port 443

View answer

Correct Answer: D

Question #54

A company's network engineer is designing an active-passive connection to AWS from two on-premises data centers. The company has set up AWS Direct Connect connections between the on-premises data centers and AWS. From each location, the company is using a transit VIF that connects to a Direct Connect gateway that is associated with a transit gateway.The network engineer must ensure that traffic from AWS to the data centers is routed first to the primary data center. The traffic should be routed to the failover data center only in the case of an outage.Which solution will meet these requirements?

A. Set the BGP community tag for all prefixes from the primary data center to 7224:7100

B. Set the BGP community tag for all prefixes from the primary data center to 7224:7300

C. Set the BGP community tag for all prefixes from the primary data center to 7224:9300

D. Set the BGP community tag for all prefixes from the primary data center to 7224:9100

View answer

Correct Answer: B

Question #55

An ecommerce company has a business-critical application that runs on Amazon EC2 instances in a VPC. The company's development team has been testing a new version of the application on test EC2 instances.The development team wants to test the new application version against production traffic to address any problems that might occur before the company releases the new version across all servers.Which solution will meet this requirement with no impact on the end user's experience?

A. Create IPsec VPN connections between the transit gateway and the virtual firewall appliances

B. Configure Virtual Router Redundancy Protocol (VRRP) on the virtual firewall appliances

C. Set up BGP between the transit gateway and the virtual firewall appliances

D. Enable transit gateway appliance mode for the VPC attachment to the inspection VPC

View answer

Correct Answer: d

Question #56

A company has deployed a critical application on a fleet of Amazon EC2 instances behind an Application LoadBalancer. The application must always be reachable on port 443 from the public internet. The application recently had an outage that resulted from an incorrect change to the EC2 security group.A network engineer needs to automate a way to verify the network connectivity between the public internet and the EC2 instances whenever a change is made to the security group. The solution also must notify the network engineer when the change affects the connection.Which solution will meet these requirements?

A. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture REJECT traffic on port 443

B. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture all traffic on port 443

C. Create a VPC Reachability Analyzer path on port 443

D. Create a VPC Reachability Analyzer path on port 443

View answer

Correct Answer: D

Question #57

A company is deploying a new application on AWS. The application uses dynamic multicasting. The company has five VPCs that are all attached to a transit gateway Amazon EC2 instances in each VPC need to be able to register dynamically to receive a multicast transmission.How should a network engineer configure the AWS resources to meet these requirements?

A. Create a static source multicast domain within the transit gateway

B. Create a static source multicast domain within the transit gateway

C. Create an Internet Group Management Protocol (IGMP) multicast domain within the transit gateway

D. Create an Internet Group Management Protocol (IGMP) multicast domain within the transit gateway

View answer

Correct Answer: C

Question #58

A company has stateful security appliances that are deployed to multiple Availability Zones in a centralized shared services VPC. The AWS environment includes a transit gateway that is attached to application VPCs and the shared services VPC. The application VPCs have workloads that are deployed in private subnets across multiple Availability Zones. The stateful appliances in the shared services VPC inspect all east west (VPC-to-VPC) traffic.Users report that inter-VPC traffic to different Availability Zones is dropping. A network engineer verified this claim by issuing Internet Control Message Protocol (ICMP) pings between workloads in different Availability Zones across the application VPCs. The network engineer has ruled out security groups, stateful device configurations and network ACLs as the cause of the dropped traffic.What is causing the traffic to drop?

A. The stateful appliances and the transit gateway attachments are deployed in a separate subnet in the shared services VPC

B. Appliance mode is not enabled on the transit gateway attachment to the shared services VPC

C. The stateful appliances and the transit gateway attachments are deployed in the same subnet in the shared services VP

D. Appliance mode is not enabled on the transit gateway attachment to the application VPCs

View answer

Correct Answer: B

Question #59

A data analytics company has a 100-node high performance computing (HPC) cluster. The HPC cluster is for parallel data processing and is hosted in a VPC in the AWS Cloud. As part of the data processing workflow, the HPC cluster needs to perform several DNS queries to resolve and connect to Amazon RDS databases, Amazon S3 buckets, and on-premises data stores that are accessible through AWS Direct Connect. The HPC cluster can increase in size by five to seven times during the company's peak event at the end of the year.The company is using two Amazon EC2 instances as primary DNS servers for the VPC. The EC2 instances are configured to forward queries to the default VPC resolver for Amazon Route 53 hosted domains and to the on- premises DNS servers for other on-premises hosted domain names. The company notices job failures and finds that DNS queries from the HPC cluster nodes failed when the nodes tried to resolve RDS and S3 bucket endpoints.Which architectural change should a network engineer implement to provide the DNS service in the MOST scalable way?

A. Scale out the DNS service by adding two additional EC2 instances in the VPC

B. Scale up the existing EC2 instances that the company is using as DNS servers

C. Create Route 53 Resolver outbound endpoints

D. Create Route 53 Resolver inbound endpoints

View answer

Correct Answer: C

Question #60

A company has hundreds of Amazon EC2 instances that are running in two production VPCs across all Availability Zones in the us-east-1 Region. The production VPCs are named VPC A and VPC B.A new security regulation requires all traffic between production VPCs to be inspected before the traffic is routed to its final destination. The company deploys a new shared VPC that contains a stateful firewall appliance and a transit gateway with a VPC attachment across all VPCs to route traffic between VPC A and VPC B through the firewall appliance for inspection. During testing, the company notices that the transit gateway is dropping the traffic whenever the traffic is between two Availability Zones.What should a network engineer do to fix this issue with the LEAST management overhead?

A. In the shared VPC, replace the VPC attachment with a VPN attachment

B. Enable transit gateway appliance mode on the VPC attachment in VPC A and VPC

C. Enable transit gateway appliance mode on the VPC attachment in the shared VP

D. In the shared VPC, configure one VPC peering connection to VPC A and another VPC peering connection to VPC B

View answer

Correct Answer: C

Question #61

A data analytics company has a 100-node high performance computing (HPC) cluster. The HPC cluster is for parallel data processing and is hosted in a VPC in the AWS Cloud. As part of the data processing workflow, the HPC cluster needs to perform several DNS queries to resolve and connect to Amazon RDS databases, Amazon S3 buckets, and on-premises data stores that are accessible through AWS Direct Connect. The HPC cluster can increase in size by five to seven times during the company's peak event at the end of the year.The company is using two Amazon EC2 instances as primary DNS servers for the VPC. The EC2 instances are configured to forward queries to the default VPC resolver for Amazon Route 53 hosted domains and to the on- premises DNS servers for other on-premises hosted domain names. The company notices job failures and finds that DNS queries from the HPC cluster nodes failed when the nodes tried to resolve RDS and S3 bucket endpoints.Which architectural change should a network engineer implement to provide the DNS service in the MOST scalable way?

A. Scale out the DNS service by adding two additional EC2 instances in the VPC

B. Scale up the existing EC2 instances that the company is using as DNS servers

C. Create Route 53 Resolver outbound endpoints

D. Create Route 53 Resolver inbound endpoints

View answer

Correct Answer: C

Question #62

A company has deployed a critical application on a fleet of Amazon EC2 instances behind an Application LoadBalancer. The application must always be reachable on port 443 from the public internet. The application recently had an outage that resulted from an incorrect change to the EC2 security group.A network engineer needs to automate a way to verify the network connectivity between the public internet and the EC2 instances whenever a change is made to the security group. The solution also must notify the network engineer when the change affects the connection.Which solution will meet these requirements?

A. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture REJECT traffic on port 443

B. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture all traffic on port 443

C. Create a VPC Reachability Analyzer path on port 443

D. Create a VPC Reachability Analyzer path on port 443

View answer

Correct Answer: D

Question #63

A security team is performing an audit of a company's AWS deployment. The security team is concerned that two applications might be accessing resources that should be blocked by network ACLs and security groups. The applications are deployed across two Amazon Elastic Kubernetes Service (Amazon EKS) clusters that use the Amazon VPC Container Network Interface (CNI) plugin for Kubernetes. The clusters are in separate subnets within the same VPC and have a Cluster Autoscaler configured.The security team needs to determine which POD IP addresses are communicating with which services throughout the VPC. The security team wants to limit the number of flow logs and wants to examine the traffic from only the two applications.Which solution will meet these requirements with the LEAST operational overhead?

A. Create VPC flow logs in the default format

B. Create VPC flow logs in a custom format

C. Create VPC flow logs in a custom format

D. Create VPC flow logs in a custom format

View answer

Correct Answer: C

Question #64

A company has multiple VPCs with subnets that use IPv4. Traffic from the VPCs to the internet uses a NAT gateway. The company wants to transition to IPv6. A network engineer creates multiple IPv6-only subnets in an existing testing VPC. The network engineer deploys a new Amazon EC2 instance that has an IPv6 address into one of the subnets. During testing, the network engineer discovers that the new EC2 instance is not able to communicate with an IPv4-only service through the internet. The network engineer needs to enable the IPv6 EC2 instance to communicate with the IPv4-only service. Which solution will meet this requirement? Understanding the Issue: The IPv6-only EC2 instance cannot communicate with IPv4-only services because IPv6 and IPv4 are not directly compatible. To bridge this gap, DNS64 and NAT64 are used together. However, AWS NAT gateways do not natively support NAT64, but you can use DNS64 to translate IPv4 DNS records (A records) into IPv6-compatible addresses (AAAA records). DNS64 for IPv6-Only Subnets: DNS64 is a service that synthesizes AAAA records for IPv4-only services. This allows IPv6-only clients to resolve IPv4 addresses as IPv6-compatible addresses, enabling communication through the NAT gateway. NAT Gateway with Route Table Updates: The NAT gateway enables outbound communication from private subnets to the internet. Updating the route tables for IPv6-only subnets to send traffic through the NAT gateway ensures that the IPv6 EC2 instance can reach IPv4 services.

A. Enable DNS64 for the IPv6-only subnets

B. Enable NAT64 for the testing VPC

C. Enable DNS64 for the new EC2 instance

D. Enable NAT64 for each route table

View answer

Correct Answer: A

Question #65

A government contractor is designing a multi-account environment with multiple VPCs for a customer. A network security policy requires all traffic between any two VPCs to be transparently inspected by a third-party appliance.The customer wants a solution that features AWS Transit Gateway. The setup must be highly available across multiple Availability Zones, and the solution needs to support automated failover. Furthermore, asymmetric routing is not supported by the inspection appliances.Which combination of steps is part of a solution that meets these requirements? (Choose two.)

A. Deploy two clusters that consist of multiple appliances across multiple Availability Zones in a designated inspection VPC

B. Deploy two clusters that consist of multiple appliances across multiple Availability Zones in a designated inspection VPC

C. Configure two route tables on the transit gateway

D. Configure two route tables on the transit gateway

E. Configure one route table on the transit gateway

View answer

Correct Answer: BC

Question #66

A company is using custom DNS servers that run BIND for name resolution in its VPCs. The VPCs are deployed across multiple AWS accounts that are part of the same organization in AWS Organizations. All the VPCs are connected to a transit gateway. The BIND servers are running in a central VPC and are configured to forward all queries for an on-premises DNS domain to DNS servers that are hosted in an on-premises data center. To ensure that all the VPCs use the custom DNS servers, a network engineer has configured a VPC DHCP options set in all the VPCs that specifies the custom DNS servers to be used as domain name servers.Multiple development teams in the company want to use Amazon Elastic File System (Amazon EFS). A development team has created a new EFS file system but cannot mount the file system to one of its Amazon EC2 instances. The network engineer discovers that the EC2 instance cannot resolve the IP address for theEFS mount point fs-33444567d.efs.us-east-1.amazonaws.com. The network engineer needs to implement a solution so that development teams throughout the organization can mount EFS file systems.Which combination of steps will meet these requirements? (Choose two.)

A. Configure the BIND DNS servers in the central VPC to forward queries for efs

B. Create an Amazon Route 53 Resolver outbound endpoint in the central VPC

C. Create an Amazon Route 53 Resolver inbound endpoint in the central VP Update all the VPC DHCP options sets to use the Route 53 Resolver inbound endpoint in the central VPC for name resolution

D. Create an Amazon Route 53 Resolver rule to forward queries for the on-premises domain to the on- premises DNS servers

E. Create an Amazon Route 53 private hosted zone for the efs

View answer

Correct Answer: BD

Question #67

A data analytics company has a 100-node high performance computing (HPC) cluster. The HPC cluster is for parallel data processing and is hosted in a VPC in the AWS Cloud. As part of the data processing workflow, the HPC cluster needs to perform several DNS queries to resolve and connect to Amazon RDS databases, Amazon S3 buckets, and on-premises data stores that are accessible through AWS Direct Connect. The HPC cluster can increase in size by five to seven times during the company's peak event at the end of the year.The company is using two Amazon EC2 instances as primary DNS servers for the VPC. The EC2 instances are configured to forward queries to the default VPC resolver for Amazon Route 53 hosted domains and to the on- premises DNS servers for other on-premises hosted domain names. The company notices job failures and finds that DNS queries from the HPC cluster nodes failed when the nodes tried to resolve RDS and S3 bucket endpoints.Which architectural change should a network engineer implement to provide the DNS service in the MOST scalable way?

A. Scale out the DNS service by adding two additional EC2 instances in the VPC

B. Scale up the existing EC2 instances that the company is using as DNS servers

C. Create Route 53 Resolver outbound endpoints

D. Create Route 53 Resolver inbound endpoints

View answer

Correct Answer: C

Question #68

A global delivery company is modernizing its fleet management system. The company has several business units. Each business unit designs and maintains applications that are hosted in its own AWS account in separate application VPCs in the same AWS Region. Each business unit's applications are designed to get data from a central shared services VPC.The company wants the network connectivity architecture to provide granular security controls. The architecture also must be able to scale as more business units consume data from the central shared services VPC in the future.Which solution will meet these requirements in the MOST secure manner?

A. Create a central transit gateway

B. Create VPC peering connections between the central shared services VPC and each application VPC in each business unit's AWS account

C. Create VPC endpoint services powered by AWS PrivateLink in the central shared services VP Create VPC endpoints in each application VP

D. Create a central transit VPC with a VPN appliance from AWS Marketplace

View answer

Correct Answer: C

Question #69

A company has hundreds of Amazon EC2 instances that are running in two production VPCs across all Availability Zones in the us-east-1 Region. The production VPCs are named VPC A and VPC B.A new security regulation requires all traffic between production VPCs to be inspected before the traffic is routed to its final destination. The company deploys a new shared VPC that contains a stateful firewall appliance and a transit gateway with a VPC attachment across all VPCs to route traffic between VPC A and VPC B through the firewall appliance for inspection. During testing, the company notices that the transit gateway is dropping the traffic whenever the traffic is between two Availability Zones.What should a network engineer do to fix this issue with the LEAST management overhead?

A. In the shared VPC, replace the VPC attachment with a VPN attachment

B. Enable transit gateway appliance mode on the VPC attachment in VPC A and VPC

C. Enable transit gateway appliance mode on the VPC attachment in the shared VP

D. In the shared VPC, configure one VPC peering connection to VPC A and another VPC peering connection to VPC B

View answer

Correct Answer: C

Question #70

A company has developed an application on AWS that will track inventory levels of vending machines and initiate the restocking process automatically. The company plans to integrate this application with vending machines and deploy the vending machines in several markets around the world. The application resides in a VPC in the us-east-1 Region. The application consists of an Amazon Elastic Container Service (Amazon ECS) cluster behind an Application Load Balancer (ALB). The communication from the vending machines to theapplication happens over HTTPS.The company is planning to use an AWS Global Accelerator accelerator and configure static IP addresses of the accelerator in the vending machines for application endpoint access. The application must be accessible only through the accelerator and not through a direct connection over the internet to the ALB endpoint.Which solution will meet these requirements?

A. Configure the ALB in a private subnet of the VPC

B. Configure the ALB in a private subnet of the VPC

C. Configure the ALB in a public subnet of the VP Attach an internet gateway

D. Configure the ALB in a private subnet of the VPC

View answer

Correct Answer: D

Question #71

A data analytics company has a 100-node high performance computing (HPC) cluster. The HPC cluster is for parallel data processing and is hosted in a VPC in the AWS Cloud. As part of the data processing workflow, the HPC cluster needs to perform several DNS queries to resolve and connect to Amazon RDS databases, Amazon S3 buckets, and on-premises data stores that are accessible through AWS Direct Connect. The HPC cluster can increase in size by five to seven times during the company's peak event at the end of the year.The company is using two Amazon EC2 instances as primary DNS servers for the VPC. The EC2 instances are configured to forward queries to the default VPC resolver for Amazon Route 53 hosted domains and to the on- premises DNS servers for other on-premises hosted domain names. The company notices job failures and finds that DNS queries from the HPC cluster nodes failed when the nodes tried to resolve RDS and S3 bucket endpoints.Which architectural change should a network engineer implement to provide the DNS service in the MOST scalable way?

A. Scale out the DNS service by adding two additional EC2 instances in the VPC

B. Scale up the existing EC2 instances that the company is using as DNS servers

C. Create Route 53 Resolver outbound endpoints

D. Create Route 53 Resolver inbound endpoints

View answer

Correct Answer: C

Question #72

A company has hundreds of Amazon EC2 instances that are running in two production VPCs across all Availability Zones in the us-east-1 Region. The production VPCs are named VPC A and VPC B.A new security regulation requires all traffic between production VPCs to be inspected before the traffic is routed to its final destination. The company deploys a new shared VPC that contains a stateful firewall appliance and a transit gateway with a VPC attachment across all VPCs to route traffic between VPC A and VPC B through the firewall appliance for inspection. During testing, the company notices that the transit gateway is dropping the traffic whenever the traffic is between two Availability Zones.What should a network engineer do to fix this issue with the LEAST management overhead?

A. In the shared VPC, replace the VPC attachment with a VPN attachment

B. Enable transit gateway appliance mode on the VPC attachment in VPC A and VPC

C. Enable transit gateway appliance mode on the VPC attachment in the shared VP

D. In the shared VPC, configure one VPC peering connection to VPC A and another VPC peering connection to VPC B

View answer

Correct Answer: C

Question #73

A company has hundreds of Amazon EC2 instances that are running in two production VPCs across all Availability Zones in the us-east-1 Region. The production VPCs are named VPC A and VPC B.A new security regulation requires all traffic between production VPCs to be inspected before the traffic is routed to its final destination. The company deploys a new shared VPC that contains a stateful firewall appliance and a transit gateway with a VPC attachment across all VPCs to route traffic between VPC A and VPC B through the firewall appliance for inspection. During testing, the company notices that the transit gateway is dropping the traffic whenever the traffic is between two Availability Zones.What should a network engineer do to fix this issue with the LEAST management overhead?

A. In the shared VPC, replace the VPC attachment with a VPN attachment

B. Enable transit gateway appliance mode on the VPC attachment in VPC A and VPC

C. Enable transit gateway appliance mode on the VPC attachment in the shared VP

D. In the shared VPC, configure one VPC peering connection to VPC A and another VPC peering connection to VPC B

View answer

Correct Answer: C

Question #74

A company has hundreds of Amazon EC2 instances that are running in two production VPCs across all Availability Zones in the us-east-1 Region. The production VPCs are named VPC A and VPC B.A new security regulation requires all traffic between production VPCs to be inspected before the traffic is routed to its final destination. The company deploys a new shared VPC that contains a stateful firewall appliance and a transit gateway with a VPC attachment across all VPCs to route traffic between VPC A and VPC B through the firewall appliance for inspection. During testing, the company notices that the transit gateway is dropping the traffic whenever the traffic is between two Availability Zones.What should a network engineer do to fix this issue with the LEAST management overhead?

A. In the shared VPC, replace the VPC attachment with a VPN attachment

B. Enable transit gateway appliance mode on the VPC attachment in VPC A and VPC

C. Enable transit gateway appliance mode on the VPC attachment in the shared VP

D. In the shared VPC, configure one VPC peering connection to VPC A and another VPC peering connection to VPC B

View answer

Correct Answer: C

Question #75

A company is creating new features for its ecommerce website. These features will use several microservices that are accessed through different paths. The microservices will run on Amazon Elastic Container Service (Amazon ECS). The company requires the use of HTTPS for all of its public websites. The application requires the customer's source IP addresses.A network engineer must implement a load balancing strategy that meets these requirements.Which combination of actions should the network engineer take to accomplish this goal? (Choose two.)

A. Use a Network Load Balancer

B. Retrieve client IP addresses by using the X-Forwarded-For header

C. Use AWS App Mesh load balancing

D. Retrieve client IP addresses by using the X-IP-Source header

E. Use an Application Load Balancer

View answer

Correct Answer: BE

Question #76

A company is migrating its containerized application to AWS. For the architecture the company will have an ingress VPC with a Network Load Balancer (NLB) to distribute the traffic to front-end pods in an Amazon Elastic Kubernetes Service (Amazon EKS) cluster. The front end of the application will determine which user is requesting access and will send traffic to 1 of 10 services VPCs. Each services VPC will include an NLB that distributes traffic to the services pods in an EKS cluster.The company is concerned about overall cost. User traffic will be responsible for more than 10 TB of data transfer from the ingress VPC to services VPCs every month. A network engineer needs to recommend how to design the communication between the VPCs.Which solution will meet these requirements at the LOWEST cost?

A. Create a transit gateway

B. Create an AWS PrivateLink endpoint in every Availability Zone in the ingress VPC

C. Create a VPC peering connection between the ingress VPC and each of the 10 services VPCs

D. Create a transit gateway

View answer

Correct Answer: C

Question #77

A security team is performing an audit of a company's AWS deployment. The security team is concerned that two applications might be accessing resources that should be blocked by network ACLs and security groups. The applications are deployed across two Amazon Elastic Kubernetes Service (Amazon EKS) clusters that use the Amazon VPC Container Network Interface (CNI) plugin for Kubernetes. The clusters are in separate subnets within the same VPC and have a Cluster Autoscaler configured.The security team needs to determine which POD IP addresses are communicating with which services throughout the VPC. The security team wants to limit the number of flow logs and wants to examine the traffic from only the two applications.Which solution will meet these requirements with the LEAST operational overhead?

A. Create VPC flow logs in the default format

B. Create VPC flow logs in a custom format

C. Create VPC flow logs in a custom format

D. Create VPC flow logs in a custom format

View answer

Correct Answer: C

Question #78

A company has stateful security appliances that are deployed to multiple Availability Zones in a centralized shared services VPC. The AWS environment includes a transit gateway that is attached to application VPCs and the shared services VPC. The application VPCs have workloads that are deployed in private subnets across multiple Availability Zones. The stateful appliances in the shared services VPC inspect all east west (VPC-to-VPC) traffic.Users report that inter-VPC traffic to different Availability Zones is dropping. A network engineer verified this claim by issuing Internet Control Message Protocol (ICMP) pings between workloads in different Availability Zones across the application VPCs. The network engineer has ruled out security groups, stateful device configurations and network ACLs as the cause of the dropped traffic.What is causing the traffic to drop?

A. The stateful appliances and the transit gateway attachments are deployed in a separate subnet in the shared services VPC

B. Appliance mode is not enabled on the transit gateway attachment to the shared services VPC

C. The stateful appliances and the transit gateway attachments are deployed in the same subnet in the shared services VP

D. Appliance mode is not enabled on the transit gateway attachment to the application VPCs

View answer

Correct Answer: B

Question #79

A data analytics company has a 100-node high performance computing (HPC) cluster. The HPC cluster is for parallel data processing and is hosted in a VPC in the AWS Cloud. As part of the data processing workflow, the HPC cluster needs to perform several DNS queries to resolve and connect to Amazon RDS databases, Amazon S3 buckets, and on-premises data stores that are accessible through AWS Direct Connect. The HPC cluster can increase in size by five to seven times during the company's peak event at the end of the year.The company is using two Amazon EC2 instances as primary DNS servers for the VPC. The EC2 instances are configured to forward queries to the default VPC resolver for Amazon Route 53 hosted domains and to the on- premises DNS servers for other on-premises hosted domain names. The company notices job failures and finds that DNS queries from the HPC cluster nodes failed when the nodes tried to resolve RDS and S3 bucket endpoints.Which architectural change should a network engineer implement to provide the DNS service in the MOST scalable way?

A. Scale out the DNS service by adding two additional EC2 instances in the VPC

B. Scale up the existing EC2 instances that the company is using as DNS servers

C. Create Route 53 Resolver outbound endpoints

D. Create Route 53 Resolver inbound endpoints

View answer

Correct Answer: C

Question #80

A security team is performing an audit of a company's AWS deployment. The security team is concerned that two applications might be accessing resources that should be blocked by network ACLs and security groups. The applications are deployed across two Amazon Elastic Kubernetes Service (Amazon EKS) clusters that use the Amazon VPC Container Network Interface (CNI) plugin for Kubernetes. The clusters are in separate subnets within the same VPC and have a Cluster Autoscaler configured.The security team needs to determine which POD IP addresses are communicating with which services throughout the VPC. The security team wants to limit the number of flow logs and wants to examine the traffic from only the two applications.Which solution will meet these requirements with the LEAST operational overhead?

A. Create VPC flow logs in the default format

B. Create VPC flow logs in a custom format

C. Create VPC flow logs in a custom format

D. Create VPC flow logs in a custom format

View answer

Correct Answer: C

Question #81

A company is deploying a new application in the AWS Cloud. The company wants a highly available web server that will sit behind an Elastic Load Balancer. The load balancer will route requests to multiple target groups based on the URL in the request. All traffic must use HTTPS. TLS processing must be offloaded to the load balancer. The web server must know the user's IP address so that the company can keep accurate logs for security purposes.Which solution will meet these requirements?

A. Deploy an Application Load Balancer with an HTTPS listener

B. Deploy an Application Load Balancer with an HTTPS listener for each domain

C. Deploy a Network Load Balancer with a TLS listener

D. Deploy a Network Load Balancer with a TLS listener for each domain

View answer

Correct Answer: A

Question #82

A security team is performing an audit of a company's AWS deployment. The security team is concerned that two applications might be accessing resources that should be blocked by network ACLs and security groups. The applications are deployed across two Amazon Elastic Kubernetes Service (Amazon EKS) clusters that use the Amazon VPC Container Network Interface (CNI) plugin for Kubernetes. The clusters are in separate subnets within the same VPC and have a Cluster Autoscaler configured.The security team needs to determine which POD IP addresses are communicating with which services throughout the VPC. The security team wants to limit the number of flow logs and wants to examine the traffic from only the two applications.Which solution will meet these requirements with the LEAST operational overhead?

A. Create VPC flow logs in the default format

B. Create VPC flow logs in a custom format

C. Create VPC flow logs in a custom format

D. Create VPC flow logs in a custom format

View answer

Correct Answer: C

Question #83

A security team is performing an audit of a company's AWS deployment. The security team is concerned that two applications might be accessing resources that should be blocked by network ACLs and security groups. The applications are deployed across two Amazon Elastic Kubernetes Service (Amazon EKS) clusters that use the Amazon VPC Container Network Interface (CNI) plugin for Kubernetes. The clusters are in separate subnets within the same VPC and have a Cluster Autoscaler configured.The security team needs to determine which POD IP addresses are communicating with which services throughout the VPC. The security team wants to limit the number of flow logs and wants to examine the traffic from only the two applications.Which solution will meet these requirements with the LEAST operational overhead?

A. Create VPC flow logs in the default format

B. Create VPC flow logs in a custom format

C. Create VPC flow logs in a custom format

D. Create VPC flow logs in a custom format

View answer

Correct Answer: C

Question #84

A security team is performing an audit of a company's AWS deployment. The security team is concerned that two applications might be accessing resources that should be blocked by network ACLs and security groups. The applications are deployed across two Amazon Elastic Kubernetes Service (Amazon EKS) clusters that use the Amazon VPC Container Network Interface (CNI) plugin for Kubernetes. The clusters are in separate subnets within the same VPC and have a Cluster Autoscaler configured.The security team needs to determine which POD IP addresses are communicating with which services throughout the VPC. The security team wants to limit the number of flow logs and wants to examine the traffic from only the two applications.Which solution will meet these requirements with the LEAST operational overhead?

A. Create VPC flow logs in the default format

B. Create VPC flow logs in a custom format

C. Create VPC flow logs in a custom format

D. Create VPC flow logs in a custom format

View answer

Correct Answer: C

Question #85

Create an Auto Scaling group for the EC2 instances. Configure the Auto Scaling group as the target group of the ALB. Configure HTTPS as the protocol for the target group.b) Configure a Network Load Balancer (NLB) that includes a TLS listener on port 443. Create an Auto Scaling group for the EC2 instances. Configure the Auto Scaling group as the target group of the NLB. Configure the NLB to terminate TLS. Configure TLS as the protocol for the target group.c) Configure a Network Load Balancer (NLB) that includes a TCP listener on port 443. Create an Auto Scaling group for the EC2 instances. Configure the Auto Scaling group as the target group of the NLB. Configure TCP as the protocol for the target group.d) Configure an Application Load Balancer (ALB) that includes a TLS listener on port 443. Create an Auto Scaling group for the EC2 instances. Configure the Auto Scaling group as the target group of the ALB. Configure TLS as the protocol for the target group. 06. A company hosts its ecommerce application on Amazon EC2 instances behind an Application Load Balancer. The EC2 instances are in a private subnet with the default DHCP options set. Internet connectivity is through a NAT gateway that is configured in the public subnet.A third-party audit of the security infrastructure identifies a DNS exfiltration vulnerability. The company must implement a highly available solution that protects against this vulnerability.Which solution will meet these requirements MOST cost-effectively?

A. Configure a BIND server with DNS filtering

B. Use Amazon Route 53 Resolver DNS Firewall

C. Use AWS Network Firewall with domain name filtering

D. Configure an Amazon Route 53 Resolver outbound endpoint with rules to filter and block suspicious traffic

View answer

Correct Answer: b

Question #86

A security team is performing an audit of a company's AWS deployment. The security team is concerned that two applications might be accessing resources that should be blocked by network ACLs and security groups. The applications are deployed across two Amazon Elastic Kubernetes Service (Amazon EKS) clusters that use the Amazon VPC Container Network Interface (CNI) plugin for Kubernetes. The clusters are in separate subnets within the same VPC and have a Cluster Autoscaler configured.The security team needs to determine which POD IP addresses are communicating with which services throughout the VPC. The security team wants to limit the number of flow logs and wants to examine the traffic from only the two applications.Which solution will meet these requirements with the LEAST operational overhead?

A. Create VPC flow logs in the default format

B. Create VPC flow logs in a custom format

C. Create VPC flow logs in a custom format

D. Create VPC flow logs in a custom format

View answer

Correct Answer: C

Question #87

A company has deployed a critical application on a fleet of Amazon EC2 instances behind an Application LoadBalancer. The application must always be reachable on port 443 from the public internet. The application recently had an outage that resulted from an incorrect change to the EC2 security group.A network engineer needs to automate a way to verify the network connectivity between the public internet and the EC2 instances whenever a change is made to the security group. The solution also must notify the network engineer when the change affects the connection.Which solution will meet these requirements?

A. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture REJECT traffic on port 443

B. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture all traffic on port 443

C. Create a VPC Reachability Analyzer path on port 443

D. Create a VPC Reachability Analyzer path on port 443

View answer

Correct Answer: D

Question #88

A government contractor is designing a multi-account environment with multiple VPCs for a customer. A network security policy requires all traffic between any two VPCs to be transparently inspected by a third-party appliance.The customer wants a solution that features AWS Transit Gateway. The setup must be highly available across multiple Availability Zones, and the solution needs to support automated failover. Furthermore, asymmetric routing is not supported by the inspection appliances.Which combination of steps is part of a solution that meets these requirements? (Choose two.)

A. Deploy two clusters that consist of multiple appliances across multiple Availability Zones in a designated inspection VPC

B. Deploy two clusters that consist of multiple appliances across multiple Availability Zones in a designated inspection VPC

C. Configure two route tables on the transit gateway

D. Configure two route tables on the transit gateway

E. Configure one route table on the transit gateway

View answer

Correct Answer: BC

Question #89

A company is deploying a new application in the AWS Cloud. The company wants a highly available web server that will sit behind an Elastic Load Balancer. The load balancer will route requests to multiple target groups based on the URL in the request. All traffic must use HTTPS. TLS processing must be offloaded to the load balancer. The web server must know the user's IP address so that the company can keep accurate logs for security purposes.Which solution will meet these requirements?

A. Deploy an Application Load Balancer with an HTTPS listener

B. Deploy an Application Load Balancer with an HTTPS listener for each domain

C. Deploy a Network Load Balancer with a TLS listener

D. Deploy a Network Load Balancer with a TLS listener for each domain

View answer

Correct Answer: A

Question #90

A company is building its website on AWS in a single VPC. The VPC has public subnets and private subnets in two Availability Zones. The website has static content such as images. The company is using Amazon S3 to store the content.The company has deployed a fleet of Amazon EC2 instances as web servers in a private subnet. The EC2 instances are in an Auto Scaling group behind an Application Load Balancer. The EC2 instances will serve traffic, and they must pull content from an S3 bucket to render the webpages. The company is using AWS Direct Connect with a public VIF for on-premises connectivity to the S3 bucket.A network engineer notices that traffic between the EC2 instances and Amazon S3 is routing through a NAT gateway. As traffic increases, the company's costs are increasing. The network engineer needs to change theconnectivity to reduce the NAT gateway costs that result from the traffic between the EC2 instances and Amazon S3.Which solution will meet these requirements?

A. Create a Direct Connect private VIF

B. Create an AWS Site-to-Site VPN tunnel over the existing public VIF

C. Implement interface VPC endpoints for Amazon S3

D. Implement gateway VPC endpoints for Amazon S3

View answer

Correct Answer: D

Question #91

A company's network engineer is designing an active-passive connection to AWS from two on-premises data centers. The company has set up AWS Direct Connect connections between the on-premises data centers and AWS. From each location, the company is using a transit VIF that connects to a Direct Connect gateway that is associated with a transit gateway.The network engineer must ensure that traffic from AWS to the data centers is routed first to the primary data center. The traffic should be routed to the failover data center only in the case of an outage.Which solution will meet these requirements?

A. Set the BGP community tag for all prefixes from the primary data center to 7224:7100

B. Set the BGP community tag for all prefixes from the primary data center to 7224:7300

C. Set the BGP community tag for all prefixes from the primary data center to 7224:9300

D. Set the BGP community tag for all prefixes from the primary data center to 7224:9100

View answer

Correct Answer: B

Question #92

A company is creating new features for its ecommerce website. These features will use several microservices that are accessed through different paths. The microservices will run on Amazon Elastic Container Service (Amazon ECS). The company requires the use of HTTPS for all of its public websites. The application requires the customer's source IP addresses.A network engineer must implement a load balancing strategy that meets these requirements.Which combination of actions should the network engineer take to accomplish this goal? (Choose two.)

A. Use a Network Load Balancer

B. Retrieve client IP addresses by using the X-Forwarded-For header

C. Use AWS App Mesh load balancing

D. Retrieve client IP addresses by using the X-IP-Source header

E. Use an Application Load Balancer

View answer

Correct Answer: BE

Question #93

A company's network engineer is designing an active-passive connection to AWS from two on-premises data centers. The company has set up AWS Direct Connect connections between the on-premises data centers and AWS. From each location, the company is using a transit VIF that connects to a Direct Connect gateway that is associated with a transit gateway.The network engineer must ensure that traffic from AWS to the data centers is routed first to the primary data center. The traffic should be routed to the failover data center only in the case of an outage.Which solution will meet these requirements?

A. Set the BGP community tag for all prefixes from the primary data center to 7224:7100

B. Set the BGP community tag for all prefixes from the primary data center to 7224:7300

C. Set the BGP community tag for all prefixes from the primary data center to 7224:9300

D. Set the BGP community tag for all prefixes from the primary data center to 7224:9100

View answer

Correct Answer: B

Question #94

A company is migrating its containerized application to AWS. For the architecture the company will have an ingress VPC with a Network Load Balancer (NLB) to distribute the traffic to front-end pods in an Amazon Elastic Kubernetes Service (Amazon EKS) cluster. The front end of the application will determine which user is requesting access and will send traffic to 1 of 10 services VPCs. Each services VPC will include an NLB that distributes traffic to the services pods in an EKS cluster.The company is concerned about overall cost. User traffic will be responsible for more than 10 TB of data transfer from the ingress VPC to services VPCs every month. A network engineer needs to recommend how to design the communication between the VPCs.Which solution will meet these requirements at the LOWEST cost?

A. Create a transit gateway

B. Create an AWS PrivateLink endpoint in every Availability Zone in the ingress VPC

C. Create a VPC peering connection between the ingress VPC and each of the 10 services VPCs

D. Create a transit gateway

View answer

Correct Answer: C

Question #95

A company's network engineer is designing an active-passive connection to AWS from two on-premises data centers. The company has set up AWS Direct Connect connections between the on-premises data centers and AWS. From each location, the company is using a transit VIF that connects to a Direct Connect gateway that is associated with a transit gateway.The network engineer must ensure that traffic from AWS to the data centers is routed first to the primary data center. The traffic should be routed to the failover data center only in the case of an outage.Which solution will meet these requirements?

A. Set the BGP community tag for all prefixes from the primary data center to 7224:7100

B. Set the BGP community tag for all prefixes from the primary data center to 7224:7300

C. Set the BGP community tag for all prefixes from the primary data center to 7224:9300

D. Set the BGP community tag for all prefixes from the primary data center to 7224:9100

View answer

Correct Answer: B

Question #96

A company is deploying a new application in the AWS Cloud. The company wants a highly available web server that will sit behind an Elastic Load Balancer. The load balancer will route requests to multiple target groups based on the URL in the request. All traffic must use HTTPS. TLS processing must be offloaded to the load balancer. The web server must know the user's IP address so that the company can keep accurate logs for security purposes.Which solution will meet these requirements?

A. Deploy an Application Load Balancer with an HTTPS listener

B. Deploy an Application Load Balancer with an HTTPS listener for each domain

C. Deploy a Network Load Balancer with a TLS listener

D. Deploy a Network Load Balancer with a TLS listener for each domain

View answer

Correct Answer: A

Question #97

A company is deploying an application. The application is implemented in a series of containers in an Amazon Elastic Container Service (Amazon ECS) cluster. The company will use the Fargate launch type for its tasks. The containers will run workloads that require connectivity initiated over an SSL connection. Traffic must be able to flow to the application from other AWS accounts over private connectivity. The application must scale in a manageable way as more consumers use the application.Which solution will meet these requirements?

A. Choose a Gateway Load Balancer (GLB) as the type of load balancer for the ECS service

B. Choose an Application Load Balancer (ALB) as the type of load balancer for the ECS service

C. Choose an Application Load Balancer (ALB) as the type of load balancer for the ECS service

D. Choose a Network Load Balancer (NLB) as the type of load balancer for the ECS service

View answer

Correct Answer: A

Question #98

A company is deploying a new application on AWS. The application uses dynamic multicasting. The company has five VPCs that are all attached to a transit gateway Amazon EC2 instances in each VPC need to be able to register dynamically to receive a multicast transmission.How should a network engineer configure the AWS resources to meet these requirements?

A. reate a static source multicast domain within the transit gateway

B. reate a static source multicast domain within the transit gateway

C. reate an Internet Group Management Protocol (IGMP) multicast domain within the transit gateway

D. reate an Internet Group Management Protocol (IGMP) multicast domain within the transit gateway

View answer

Correct Answer: C

Question #99

An ecommerce company is hosting a web application on Amazon EC2 instances to handle continuously changing customer demand. The EC2 instances are part of an Auto Scaling group. The company wants to implement a solution to distribute traffic from customers to the EC2 instances. The company must encrypt all traffic at all stages between the customers and the application servers. No decryption at intermediate points is allowed.Which solution will meet these requirements?

A. Create an Application Load Balancer (ALB)

B. Create an Amazon CloudFront distribution

C. Create a Network Load Balancer (NLB)

D. Create a Gateway Load Balancer (GLB)

View answer

Correct Answer: C

Question #100

A company has hundreds of Amazon EC2 instances that are running in two production VPCs across all Availability Zones in the us-east-1 Region. The production VPCs are named VPC A and VPC B.A new security regulation requires all traffic between production VPCs to be inspected before the traffic is routed to its final destination. The company deploys a new shared VPC that contains a stateful firewall appliance and a transit gateway with a VPC attachment across all VPCs to route traffic between VPC A and VPC B through the firewall appliance for inspection. During testing, the company notices that the transit gateway is dropping the traffic whenever the traffic is between two Availability Zones.What should a network engineer do to fix this issue with the LEAST management overhead?

A. In the shared VPC, replace the VPC attachment with a VPN attachment

B. Enable transit gateway appliance mode on the VPC attachment in VPC A and VPC

C. Enable transit gateway appliance mode on the VPC attachment in the shared VP

D. In the shared VPC, configure one VPC peering connection to VPC A and another VPC peering connection to VPC B

View answer

Correct Answer: C

Question #101

A data analytics company has a 100-node high performance computing (HPC) cluster. The HPC cluster is for parallel data processing and is hosted in a VPC in the AWS Cloud. As part of the data processing workflow, the HPC cluster needs to perform several DNS queries to resolve and connect to Amazon RDS databases, Amazon S3 buckets, and on-premises data stores that are accessible through AWS Direct Connect. The HPC cluster can increase in size by five to seven times during the company's peak event at the end of the year.The company is using two Amazon EC2 instances as primary DNS servers for the VPC. The EC2 instances are configured to forward queries to the default VPC resolver for Amazon Route 53 hosted domains and to the on- premises DNS servers for other on-premises hosted domain names. The company notices job failures and finds that DNS queries from the HPC cluster nodes failed when the nodes tried to resolve RDS and S3 bucket endpoints.Which architectural change should a network engineer implement to provide the DNS service in the MOST scalable way?

A. Scale out the DNS service by adding two additional EC2 instances in the VPC

B. Scale up the existing EC2 instances that the company is using as DNS servers

C. Create Route 53 Resolver outbound endpoints

D. Create Route 53 Resolver inbound endpoints

View answer

Correct Answer: C

Question #102

A company's network engineer is designing an active-passive connection to AWS from two on-premises data centers. The company has set up AWS Direct Connect connections between the on-premises data centers and AWS. From each location, the company is using a transit VIF that connects to a Direct Connect gateway that is associated with a transit gateway.The network engineer must ensure that traffic from AWS to the data centers is routed first to the primary data center. The traffic should be routed to the failover data center only in the case of an outage.Which solution will meet these requirements?

A. Set the BGP community tag for all prefixes from the primary data center to 7224:7100

B. Set the BGP community tag for all prefixes from the primary data center to 7224:7300

C. Set the BGP community tag for all prefixes from the primary data center to 7224:9300

D. Set the BGP community tag for all prefixes from the primary data center to 7224:9100

View answer

Correct Answer: B

Question #103

A company has deployed a critical application on a fleet of Amazon EC2 instances behind an Application LoadBalancer. The application must always be reachable on port 443 from the public internet. The application recently had an outage that resulted from an incorrect change to the EC2 security group.A network engineer needs to automate a way to verify the network connectivity between the public internet and the EC2 instances whenever a change is made to the security group. The solution also must notify the network engineer when the change affects the connection.Which solution will meet these requirements?

A. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture REJECT traffic on port 443

B. Enable VPC Flow Logs on the elastic network interface of each EC2 instance to capture all traffic on port 443

C. Create a VPC Reachability Analyzer path on port 443

D. Create a VPC Reachability Analyzer path on port 443

View answer

Correct Answer: D

Question #104

A company has stateful security appliances that are deployed to multiple Availability Zones in a centralized shared services VPC. The AWS environment includes a transit gateway that is attached to application VPCs and the shared services VPC. The application VPCs have workloads that are deployed in private subnets across multiple Availability Zones. The stateful appliances in the shared services VPC inspect all east west (VPC-to-VPC) traffic.Users report that inter-VPC traffic to different Availability Zones is dropping. A network engineer verified this claim by issuing Internet Control Message Protocol (ICMP) pings between workloads in different Availability Zones across the application VPCs. The network engineer has ruled out security groups, stateful device configurations and network ACLs as the cause of the dropped traffic.What is causing the traffic to drop?

A. The stateful appliances and the transit gateway attachments are deployed in a separate subnet in the shared services VPC

B. Appliance mode is not enabled on the transit gateway attachment to the shared services VPC

C. The stateful appliances and the transit gateway attachments are deployed in the same subnet in the shared services VP

D. Appliance mode is not enabled on the transit gateway attachment to the application VPCs

View answer

Correct Answer: B

Question #105

A company is creating new features for its ecommerce website. These features will use several microservices that are accessed through different paths. The microservices will run on Amazon Elastic Container Service (Amazon ECS). The company requires the use of HTTPS for all of its public websites. The application requires the customer's source IP addresses.A network engineer must implement a load balancing strategy that meets these requirements.Which combination of actions should the network engineer take to accomplish this goal? (Choose two.)

A. Use a Network Load Balancer

B. Retrieve client IP addresses by using the X-Forwarded-For header

C. Use AWS App Mesh load balancing

D. Retrieve client IP addresses by using the X-IP-Source header

E. Use an Application Load Balancer

View answer

Correct Answer: BE

Question #106

A company runs a workload in a single VPC on AWS. The company's architecture contains several interface VPC endpoints for AWS services, including Amazon CloudWatch Logs and AWS Key Management Service (AWS KMS). The

A. Outbound - Rule 2

B. Inbound - Rule 1 and Outbound - Rule 1

C. Inbound - Rule 2 and Outbound - Rule 1

D. Outbound - Rule 1

View answer

Correct Answer: B

Question #107

A company has deployed a software-defined WAN (SD-WAN) solution to interconnect all of its offices. The company is migrating workloads to AWS and needs to extend its SD-WAN solution to support connectivity to these workloads.A network engineer plans to deploy AWS Transit Gateway Connect and two SD-WAN virtual appliances to provide this connectivity. According to company policies, only a single SD-WAN virtual appliance can handle traffic from AWS workloads at a given time.How should the network engineer configure routing to meet these requirements?

A. Add a static default route in the transit gateway route table to point to the secondary SD-WAN virtualappliance

B. Configure the BGP community tag 7224:7300 on the primary SD-WAN virtual appliance for BGP routes toward the transit gateway

C. Configure the AS_PATH prepend attribute on the secondary SD-WAN virtual appliance for BGP routes toward the transit gateway

D. Disable equal-cost multi-path (ECMP) routing on the transit gateway for Transit Gateway Connect

View answer

Correct Answer: C

Question #108

A company is establishing connectivity between its on-premises site and an existing VPC on AWS to meet a new security requirement. According to the new requirement, all public DNS queries must use an on-premises DNS security solution. The company's security team has allowed an exception for the AWS service endpoints because the company is using VPC endpoints to access AWS services.

A. Create a system rule for the domain name "

B. Create a new DHCP options set that provides the IP address of the on-premises DNS security solution

C. Create an Amazon Route 53 Resolver inbound endpoint

D. Create an Amazon Route 53 Resolver outbound endpoint

E. Create a system rule for the domain name amazonaws

F. Create a forwarding rule for the domain name "

View answer

Correct Answer: DEF

Question #109

A data analytics company has a 100-node high performance computing (HPC) cluster. The HPC cluster is for parallel data processing and is hosted in a VPC in the AWS Cloud. As part of the data processing workflow, the HPC cluster needs to perform several DNS queries to resolve and connect to Amazon RDS databases, Amazon S3 buckets, and on-premises data stores that are accessible through AWS Direct Connect. The HPC cluster can increase in size by five to seven times during the company's peak event at the end of the year.The company is using two Amazon EC2 instances as primary DNS servers for the VPC. The EC2 instances are configured to forward queries to the default VPC resolver for Amazon Route 53 hosted domains and to the on- premises DNS servers for other on-premises hosted domain names. The company notices job failures and finds that DNS queries from the HPC cluster nodes failed when the nodes tried to resolve RDS and S3 bucket endpoints.Which architectural change should a network engineer implement to provide the DNS service in the MOST scalable way?

A. Scale out the DNS service by adding two additional EC2 instances in the VPC

B. Scale up the existing EC2 instances that the company is using as DNS servers

C. Create Route 53 Resolver outbound endpoints

D. Create Route 53 Resolver inbound endpoints

View answer

Correct Answer: C

Question #110

A company's network engineer is designing an active-passive connection to AWS from two on-premises data centers. The company has set up AWS Direct Connect connections between the on-premises data centers and AWS. From each location, the company is using a transit VIF that connects to a Direct Connect gateway that is associated with a transit gateway.The network engineer must ensure that traffic from AWS to the data centers is routed first to the primary data center. The traffic should be routed to the failover data center only in the case of an outage.Which solution will meet these requirements?

A. Set the BGP community tag for all prefixes from the primary data center to 7224:7100

B. Set the BGP community tag for all prefixes from the primary data center to 7224:7300

C. Set the BGP community tag for all prefixes from the primary data center to 7224:9300

D. Set the BGP community tag for all prefixes from the primary data center to 7224:9100

View answer

Correct Answer: B

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