A company uses AWS CloudFormation to manage an application that runs on Amazon EC2 instances. The instances are in an Amazon EC2 Auto Scaling group. The company wants to treat its infrastructure as immutable. A DevOps engineer must implement a solution to replace two EC2 instances at a time whenever operating system configuration updates are needed or when new Amazon Machine Images (AMIs) are needed. A minimum of four EC2 instances must be running whenever an update is in progress. Which solution will meet these requirements?

A company uses AWS CodePipeline and AWS CodeBuild to build and deploy its applications. The company needs to add an automated step for unit testing in the software deployment pipeline. The package management tool that the company uses for its programming language runs the tests for the applications. Which combination of actions should a DevOps engineer take to add the new step to the pipeline? (Select TWO.)

A company is using AWS Database Migration Service (AWS DMS) to replicate data from a source database in a data center to a target Amazon Aurora PostgreSQL database. The company has created a DMS replication task with change data capture (CDC). The replication instance sometimes gets interrupted and affects critical functionality. The company must improve the replication instance's resiliency and receive notifications about interruptions. Which solution will meet these requirements with the LEAST operational overhead?

A company is using an Amazon API Gateway API and an AWS Lambda function to host a microservice. The microservice accesses pricing data in an Amazon DynamoDB table for the company's online store. Interest in the online store has increased. As a result, latency issues and throttling on the DynamoDB table are occurring when a specific query runs. Some internal services access the DynamoDB table directly. No caching is enabled for the current solution. A DevOps engineer notices that repeat requests to the API are taking the same amount of time as unique requests. The DevOps engineer must reduce the latency for the repeat requests to the API and must reduce the throttling on the DynamoDB table. Which solution will meet these requirements?

A company needs to identify AWS Lambda functions that are running end-of-life (EOL) language runtimes in an AWS account. The account is part of an organization in AWS Organizations and has only the AWS Basic Support plan. A DevOps engineer must create a monitoring solution that notifies the company about any Lambda functions that are running EOL runtimes. The company already has created an Amazon Simple Notification Service (Amazon SNS) topic. The company also has configured AWS Config for the account. What should the DevOps engineer do to meet the requirements?

A company has an AWS account that contains an EC2 Image Builder pipeline that the company uses to create and test Amazon Linux golden images. In the same AWS account, the company has created a new AWS CodePipeline pipeline that packages the code for a custom Amazon EC2 agent. The final step in the CodePipeline pipeline publishes the packaged agent to an AWS CodeArtifact repository. A DevOps engineer needs to update the Image Builder pipeline to build a new Amazon Linux golden image whenever a new version of the custom EC2 agent is created. Which solution will meet this requirement in the MOST operationally efficient manner?

A company is running an application on Amazon EC2 instances in an Auto Scaling group. Recently, an issue occurred that prevented EC2 instances from launching successfully, and it took several hours for the support team to discover the issue. The support team wants to be notified by email whenever an EC2 instance does not start successfully. Which action will accomplish this?

A company has many AWS accounts in an organization in AWS Organizations. The company has a CI/CD pipeline that builds Docker images and publishes the images to an Amazon Elastic Container Registry (Amazon ECR) repository. The ECR repository is encrypted by an AWS Key Management Service (AWS KMS) customer managed key. The KMS key grants permission to an IAM role that the CI/CD pipeline uses. The company needs to make the Docker images available to all accounts in the organization and must maintain the current level of security for the images. Which combination of steps should the company take to meet these requirements? (Select TWO.)

A software-as-a-service (SaaS) company is using AWS Elastic Beanstalk to deploy its primary.NET application. The Elastic Beanstalk environment is configured to use Amazon EC2 Auto Scaling and Elastic Load Balancing (ELB) for its underlying Amazon EC2 instances. The company is experiencing incidents in which EC2 instances are marked unhealthy and are terminated by Auto Scaling groups after a failed ELB health check. The company's DevOps team must build a solution that will notify the operations team whenever an Auto Scaling group terminates EC2 instances for any existing client environments. What should the DevOps team do to meet this requirement?

A company grants external users access to its AWS account by creating an IAM user for each external user. A DevOps engineer must implement a solution to revoke access from IAM users that have not accessed the account in 90 days. Which solution will meet these requirements?