CompTIA N10-009 Online Practice Questions and Exam Preparation

CompTIA N10-009 Online Questions & Answers

• Question 141:

  A client with a 2.4GHz wireless network has stated that the entire office is experiencing intermittent issues with laptops after the WAP was moved.

  Which of the following is the most likely reason for these issues?

  A. The network uses a non-overlapping channel.
  B. The signal is reflecting too much.
  C. The network has excessive noise.
  D. A microwave is in the office.
  D. A microwave is in the office.

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  Explanation

  Microwaves are known to interfere with the 2.4GHz frequency, which is the same frequency used by many wireless networks. This can cause signal degradation and intermittent connectivity issues, especially if the WAP is placed near such devices.

• Question 142:

  Which of the following is the final step in the ticket management process?

  A. Escalating to senior management
  B. Performing functional and non-functional testing
  C. Documenting findings, outcomes, and lessons learned
  D. Establishing a detailed action plan
  C. Documenting findings, outcomes, and lessons learned

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  Explanation

  The correct answer is Documenting findings, outcomes, and lessons learned because proper documentation and closure are the final steps in the ticket management and troubleshooting process. According to CompTIA Network+ (N10-009) objectives under network operations and troubleshooting methodology, once an issue is resolved, technicians must verify full system functionality, implement preventive measures if needed, and document the entire process before closing the ticket.

  Documentation ensures that all relevant information-such as the root cause, corrective actions taken, configuration changes made, and lessons learned-is recorded for future reference. This supports knowledge base updates, trend analysis, compliance requirements, and improved response times for similar incidents.

  Escalation (Option A) occurs earlier if the issue cannot be resolved at the current support tier.

  Establishing an action plan (Option D) is part of the remediation phase, not the final step.

  Functional and non-functional testing (Option B) occurs during verification before closure.

  Therefore, comprehensive documentation and formal ticket closure represent the final step in the ticket management lifecycle.

• Question 143:

  A network administrator wants to analyze attack behavior against the organization without risking production systems.

  Which of the following should be implemented?

  A. Honeypot
  B. IDS
  C. Firewall
  D. NAC
  A. Honeypot

• Question 144:

  A technician is trying to install a VolP phone, but the phone is not turning on. The technician checks the cable gong from the phone to the switch, and the cable is good.

  Which of the following actions IS needed for this phone to work?

  A. Add a POE injector
  B. Enable MDIX.
  C. Use a crossover cable.
  D. Reconfigure the port.
  A. Add a POE injector

• Question 145:

  A data center administrator is evaluating the use of jumbo frames within a storage environment.

  Which of the following describes the best reason to use jumbo frames in the storage environment?

  A. To reduce device overhead
  B. To report on the current root switch in the STP
  C. To improve routing convergence
  D. To increase drive throughput
  A. To reduce device overhead

• Question 146:

  A Wi-Fi analyzer shows the following:

  

  Users near AP1 report slow speeds and disconnects.

  What should be done FIRST?

  A. Replace antennas
  B. Change channels
  C. Increase transmit power
  D. Disable AP2
  B. Change channels

• Question 147:

  A network administrator is configuring a network for a new site that will have 150 users. Within the next year, the site is expected to grow by ten users. Each user will have two IP addresses, one for a computer and one for a phone connected to the network.

  Which of the following classful IPv4 address ranges will be best-suited for the network?

  A. Class D
  B. Class B
  C. Class A
  D. Class C
  B. Class B

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  Explanation

  Class D: Used for multicast, not suitable for assigning to hosts.

  Class C: Only supports 254 hosts max - less than required 320.

  Class A: Overkill, supports millions of hosts.

  Class B: Supports 65,534 hosts

• Question 148:

  A network technician is troubleshooting a faulty NIC and tests the theory.

  Which of the following should the technician do next?

  A. Develop a theory.
  B. Establish a plan of action.
  C. Implement the solution.
  D. Document the findings.
  C. Implement the solution.

• Question 149:

  Which of the following VPN configurations forces a remote user to access internet resources through the corporate network?

  A. Clientless
  B. Site-to-site
  C. SSE
  D. Full-tunnel
  D. Full-tunnel

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  Explanation

  A full-tunnel VPN forces a remote user's traffic-including access to public internet resources-to traverse the corporate VPN tunnel and egress from the organization's network. This is commonly required to ensure consistent enforcement of corporate security controls such as web filtering, IDS/IPS inspection, DLP policies, logging, and access control. In Network+ terms, full-tunnel VPNing routes the user's default gateway through the VPN, meaning both internal traffic (to corporate subnets) and external traffic (to internet destinations) is sent through the encrypted tunnel.

  By contrast, a split-tunnel VPN (not listed) would send only corporate-bound traffic through the VPN while allowing internet traffic to go directly out the user's local ISP-reducing corporate bandwidth usage but also reducing centralized inspection and control. Clientless VPN usually refers to browser-based access to specific internal applications without a full network tunnel for all traffic. Site-to-site VPN connects entire networks to each other (e.g., branch office to HQ) rather than an individual remote user. SSE (Security Service Edge) is a cloud security framework/service model, not the classic VPN configuration described in the question. Hence, full-tunnel is the correct answer.

• Question 150:

  A company implements a new network utilizing only IPv6 addressing and needs to connect to the internet.

  Which of the following must be enabled in order for the internal network to contact servers on the internet?

  A. MPLS
  B. NAT64
  C. GRE
  D. Static routing
  B. NAT64

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  Explanation

  The correct answer is NAT64, which is required when an IPv6-only internal network needs to communicate with IPv4-based servers on the internet. NAT64 enables protocol translation between IPv6 and IPv4, allowing IPv6 clients to access IPv4 resources. MPLS is a WAN forwarding technology and does not provide protocol translation. GRE is a tunneling protocol and does not provide address or protocol translation. Static routing only defines packet forwarding paths and does not resolve protocol incompatibility. Therefore, NAT64 is required.