Free CompTIA N10-009 Practice Questions & Answers 2026 Part4 | CompTIA Network+

A network administrator wants to implement security zones in the corporate network to control access to only individuals inside of the corporation.Which of the following security zones is the best solution?

A network technician is troubleshooting network latency and has determined the issue to beoccuring two network switches( Switch10 and Switch11). Symptoms reported included poor videoperformance and slow file copying. Given the following informtion:Which of the following should the technician most likely do to resolve the issue?

A customer lost the connection to the telephone system. The administration console is configured with multiple network interfaces and is connected to multiple switches. The network administrator troubleshoots and verifies the following:The support team is able to connect remotely to the administration console.Rebooting the switch shows solid link and activity lights even on unused ports.Rebooting the telephone system does not bring the system back online.The console is able to connect directly to individual modules successfully.Which of the following is the most likely reason the customer lost the connection?

Which of the following does OSPF use to communicate routing updates?

A user notifies a network administrator about losing access to a remote file server. The network administrator is able to ping the server and verifies the current firewall rules do not block access to the network fileshare.Which of the following tools would help identify which ports are open on the remote file server?

An attacker follows an employee through a badge-secured door before the door closes.Which of the following types of attacks is occurring?

Which of the following are environmental factors that should be considered when installing equipment in a building? (Choose two.)

A network administrator deployed wireless networking in the office area.When users visit the outdoor patio and try to download emails with large attachments or stream training videos, they notice buffering issues.Which of the following is the most likely cause?

An organization moved its DNS servers to new IP addresses. After this move, customers are no longer able to access the organization's website.Which of the following DNS entries should be updated?

A client wants to increase overall security after a recent breach.Which of the following would be best to implement? (Choose two.)

A security administrator is creating a new firewall object for a device with IP address 192.168.100.1/25. However, the firewall software only uses dotted decimal notation in configuration fields.Which of the following is the correct subnet mask to use?

Which of the following best describes what an organization would use port address translation for?

A network technician is troubleshooting a faulty NIC and tests the theory. Which of the following should the technician do next?

Which of the following kinds of targeted attacks uses multiple computers or bots to request the same resource repeatedly?

A network technician needs to install patch cords from the UTP patch panel to the access switch for a newly occupied set of offices. The patch panel is not labeled for easy jack identification.Which of the following tools provides the easiest way to identify the appropriate patch panel port?

Which of the following is the next step to take after successfully testing a root cause theory?

Which of the following network devices converts wireless signals to electronic signals?

Which of the following steps of the troubleshooting methodology should a technician take to confirm a theory?

Which of the following most likely determines the size of a rack for installation? (Choose two.)

Which of the following attacks can cause users who are attempting to access a company website tobe directed to an entirely different website?

Which of the following cable types provides the highest possible transmission speed?

A network administrator is planning to implement device monitoring to enhance network visibility. The security team requires that the solution provides authentication and encryption.Which of the following meets these requirements?

A manager is evaluating the environmental design of a data center.Which of the following setups should the manager implement if the maximum thermal dissipation is the highest concern?

A secure communication link needs to be configured between data centers via the internet. The data centers are located in different regions.

A network administrator needs to change where the outside DNS records are hosted.Which of the following records should the administrator change at the registrar to accomplish this task?

A network administrator is deploying a new switch and wants to make sure that the default priority value was set for a spanning tree.Which of the following values would the network administrator expect to see?

A company's office has publicly accessible meeting rooms equipped with network ports. A recent audit revealed that visitors were able to access the corporate network by plugging personal laptops into open network ports.Which of the following should the company implement to prevent this in the future?

Which of the following traffic types does a DHCP Discover request from a PC use?

A network administrator needs to create an SVI on a Layer 3-capable device to separate voice and data traffic.Which of the following best explains this use case?

Which of the following disaster recovery metrics is used to describe the amount of data that is lostsince the last backup?

A network administrator is configuring a new switch and wants to ensure that only assigned devices can connect to the switch.Which of the following should the administrator do?

A network administrator received complaints of intermittent network connectivity issues. The administrator investigates and finds that the network design contains potential loop scenarios.Which of the following should the administrator do?

Which of the following is a characteristic of the application layer?

A network administrator needs to implement routing capabilities in a hypervisor.Which of the following should the administrator most likely implement?

Which of the following fiber connector types is the most likely to be used on a network interface card?

A systems administrator is configuring a new device to be added to the network. The administrator is planning to perform device hardening prior to connecting the device. Which of the following should the administrator do first?

Which of the following would a network administrator configure to set NTP settings for a specific subnet within DHCP?

Users report latency with a SaaS application. Which of the following should a technician adjust to fix the issue?

An organization has a security requirement that all network connections can be traced back to a user. A network administrator needs to identify a solution to implement on the wireless network.Which of the following is the best solution?

A systems administrator is investigating why users cannot reach a Linux web server with a browser but can ping the server IP. The server is online, the web server process is running, and the link to the switch is up.Which of the following commands should the administrator run on the server first?

Which of the following is a cost-effective advantage of a split-tunnel VPN?

Which of the following disaster recovery metrics describes the average length of time a piece of equipment can be expected to operate normally?

Which of the following functions is used to prioritize network traffic based on the type of traffic?

A research facility is expecting to see an exponential increase in global network traffic in the near future. The offices are equipped with 2.5Gbps fiber connections from the ISP, but the facility is currently only utilizing 1Gbps connections.Which of the following would need to be configured in order to use the ISP's connection speed?

A customer calls the help desk to report that resources are no longer reachable. The resources were available before network changes were made. The technician verifies the report, investigates, and discovers that a new logical layout is segmenting the network using tagging. Which of the following appliances most likely needs to be reviewed to restore the connections? The correct answer is Switch because the question references a new logical layout segmenting the network using tagging, which indicates VLAN (Virtual Local Area Network) configuration. VLAN tagging (IEEE 802.1Q) is performed on switches to logically separate broadcast domains within the same physical infrastructure. According to CompTIA Network+ (N10-009) objectives under switching technologies, VLANs are used to improve security, reduce broadcast traffic, and logically segment network traffic. When VLAN tagging is misconfigured---such as incorrect trunk ports, access port assignments, or mismatched VLAN IDs---devices may lose connectivity to required network resources. Since the issue began after changes involving tagging, the most likely cause is an incorrect switch configuration, such as improper VLAN assignments or trunking settings. An access point (Option A) may use VLANs for SSID segmentation, but core tagging configuration is handled at the switch. A firewall (Option B) filters traffic but does not control VLAN tagging at Layer 2 in typical deployments. A load balancer (Option D) distributes traffic among servers and is unrelated to VLAN segmentation. Therefore, reviewing the switch configuration is the appropriate action to restore connectivity.

Which of the following should be used to obtain remote access to a network appliance that has failed to start up properly?

A network manager wants to view network traffic for devices connected to a switch. A network engineer connects an appliance to a free port on the switch and needs to configure the switch port connected to the appliance.Which of the following is the best option for the engineer to enable?

A technician is troubleshooting a user's laptop that is unable to connect to a corporate server. The technician thinks the issue pertains to routing.Which of the following commands should the technician use to identify the issue?

A user tries to visit a website, but instead of the intended site, the page displays vmw.cba.com.

A small business is deploying new phones, and some of the phones have full HD videoconferencing features. The Chief Information Officer is concerned that the network might not be able to handle the traffic if the traffic reaches a certain threshold.Which of the following can the network engineer configure to help ease these concerns?

A customer needs six usable IP addresses.Which of the following best meets this requirement?

A network administrator deployed wireless networking in the office area.When users visit the outdoor patio and try to download emails with large attachments or stream training videos, they notice buffering issues.Which of the following is the most likely cause?

Which of the following is the most secure way to provide site-to-site connectivity?

A network administrator wants to implement security zones in the corporate network to controlaccess to only individuals inside of the corporation. Which of the following security zones is the bestsolution?

A network administrator is connecting two Layer 2 switches in a network. These switches musttransfer data in multiple networks. Which of the following would fulfill this requirement?

Which of the following routing protocols uses an autonomous system number?

A user is unable to navigate to a website because the provided URL is not resolving to the correct IP address. Other users are able to navigate to the intended website without issue.Which of the following is most likely causing this issue?

A network administrator upgrades the wireless access points and wants to implement a configuration that gives users higher speed and less channel overlap based on device compatibility. Which of the following accomplishes this goal?

Which of the following refers to a weakness in a mechanism or technical process?

A critical infrastructure switch is identified as end-of-support.Which of the following is the best next step to ensure security?

Which of the following routing technologies uses a successor and a feasible successor?

A network architect needs to create a wireless field network to provide reliable service to public safety vehicles.Which of the following types of networks is the best solution?

Which of the following devices can operate in multiple layers of the OSI model?

Which of the following layers of the OSI model is responsible for end-to-end encryption?

A network administrator needs to set up a file server to allow user access. The organization uses DHCP to assign IP addresses.Which of the following is the best solution for the administrator to set up?

Which of the following diagrams would most likely include specifications about fiber connector types?

A network administrator is configuring a new switch and wants to connect two ports to the core switch to ensure redundancy.Which of the following configurations would meet this requirement?

A storage network requires reduced overhead and increased efficiency for the amount of data being sent.Which of the following should an engineer most likely configure to meet these requirements?

Which of the following is most likely responsible for the security and handling of personal data in Europe?

Which of the following should a network administrator configure when adding OT devices to an organization's architecture?

A network administrator configured a router interface as 10.0.0.95 255.255.255.240. The administrator discovers that the router is not routing packets to a web server with IP 10.0.0.81/28.Which of the following is the best explanation?

An administrator is configuring a switch that will be placed in an area of the office that is accessible to customers.Which of the following is the best way for the administrator to mitigate unknown devices from connecting to the network?

Which of the following attacks utilizes a network packet that contains multiple network tags?