CompTIA Network+ Practice Questions: Network Troubleshooting and Tools Domain
Test your CompTIA Network+ knowledge with 10 practice questions from the Network Troubleshooting and Tools domain. Includes detailed explanations and answers.
CompTIA Network+ Practice Questions
Master the Network Troubleshooting and Tools Domain
Test your knowledge in the Network Troubleshooting and Tools domain with these 10 practice questions. Each question is designed to help you prepare for the CompTIA Network+ certification exam with detailed explanations to reinforce your learning.
Question 1
During a network audit, you discover that a switch is experiencing high CPU utilization. Which tool would you use to determine if a specific port is causing the issue?
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Correct Answer: A
Explanation: An SNMP monitoring tool can provide detailed insights into switch performance, including per-port statistics, which can help identify if a specific port is causing high CPU utilization.
Question 2
An employee reports that they cannot access any network resources, but their computer shows it is connected to the network. What is the first step you should take to troubleshoot this issue?
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Correct Answer: B
Explanation: The first step is to verify the IP configuration to ensure the computer has a valid IP address, subnet mask, and gateway. An incorrect configuration could prevent access to network resources.
Question 3
In an IPv6 network, users are reporting that they are unable to access certain IPv6-enabled websites. Which tool can be used to verify the IPv6 address configuration on a user's computer?
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Correct Answer: A
Explanation: On Windows systems, 'ipconfig' can be used to display the current IPv6 address configuration, helping to identify potential misconfigurations.
Question 4
A user reports intermittent connectivity issues. The network administrator suspects a faulty cable. Which tool should be used to verify the integrity of the cable?
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Correct Answer: D
Explanation: A cable tester is specifically designed to test the integrity of network cables, checking for issues like shorts, open circuits, and incorrect wiring. This is the most appropriate tool for verifying cable integrity.
Question 5
A network administrator needs to determine if a specific port is open on a remote server. Which tool should they use?
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Correct Answer: B
Explanation: The 'nmap' tool is a network scanner that can be used to discover hosts and services on a computer network, including checking for open ports on remote servers.
Question 6
You are asked to troubleshoot a slow network connection. After checking the physical layer and confirming everything is connected properly, you decide to check the network traffic. Which command would provide a summary of the network interfaces and their respective traffic statistics on a Linux server?
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Correct Answer: B
Explanation: The 'netstat -i' command provides a summary of network interfaces along with their traffic statistics, which can help diagnose issues related to slow network connections.
Question 7
A user reports that they cannot access a specific website, but other websites are accessible. You suspect a DNS issue. Which command would help you verify the DNS resolution for the problematic website?
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Correct Answer: C
Explanation: The 'nslookup' command is used to query DNS servers and verify DNS resolution for a specific domain name. This will help determine if the DNS server is correctly resolving the domain name of the problematic website.
Question 8
A user is unable to connect to a network printer. You suspect the issue is related to the user's workstation. Which step should you take first to troubleshoot the issue?
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Correct Answer: B
Explanation: Since the issue is suspected to be with the user's workstation, the first step should be to verify the network settings on the user's machine to ensure it is properly configured to communicate with the printer.
Question 9
While troubleshooting a network, you suspect that a specific cable might be faulty. Which tool should you use to test the integrity and connectivity of the Ethernet cable?
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Correct Answer: A
Explanation: A cable tester is specifically designed to test the integrity and connectivity of Ethernet cables, checking for issues such as open circuits, shorts, and incorrect wiring.
Question 10
You are troubleshooting a network issue where users are unable to access a web server using its domain name, but they can access it via its IP address. What is the most likely cause of this issue?
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Correct Answer: A
Explanation: If users can access the web server by IP address but not by domain name, it indicates a DNS resolution issue. This is likely due to the DNS server being down or misconfigured, preventing domain names from being resolved to IP addresses.
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About CompTIA Network+ Certification
The CompTIA Network+ certification validates your expertise in network troubleshooting and tools and other critical domains. Our comprehensive practice questions are carefully crafted to mirror the actual exam experience and help you identify knowledge gaps before test day.