Free CompTIA Server+ Troubleshooting Practice Test — SK0-005 Domain (28% of the Exam)

Practice free CompTIA Server+ Troubleshooting exam questions covering the CompTIA troubleshooting methodology plus diagnosing hardware, storage, OS, network, and security problems on servers. Every question includes the correct answer and a detailed explanation.

Topics Covered in This Domain

Free CompTIA Server+ Troubleshooting Practice Questions

Sample Question 1 — Troubleshooting

A server in your data center is not booting, and the power indicator is off. What is the first step you should take to troubleshoot this issue?

  1. A. Check the power cable connections and ensure they are secure. (Correct answer)
  2. B. Replace the server's power supply unit.
  3. C. Verify the server's BIOS settings.
  4. D. Inspect the server's hard drives for failure.

Correct answer: A

Explanation: The first step in troubleshooting a server that is not powering on is to check the power cable connections. This is a simple and non-invasive step that can quickly identify if the issue is due to a loose or disconnected cable. Options B, C, and D are more complex and should be considered only after ensuring the server is properly connected to a power source.

Sample Question 2 — Troubleshooting

After a recent firmware update, a server's RAID array is no longer recognized by the operating system. What is the most likely cause?

  1. A. The RAID controller firmware is incompatible with the new update. (Correct answer)
  2. B. The server's power supply is insufficient to support the RAID array.
  3. C. The RAID array has been physically damaged during the update.
  4. D. The operating system requires a reinstallation to recognize the RAID array.

Correct answer: A

Explanation: Firmware updates can sometimes introduce compatibility issues, especially with hardware components like RAID controllers. Ensuring compatibility between the RAID controller firmware and the system firmware is crucial. Options B, C, and D are less likely causes in this scenario, as they do not directly relate to the firmware update.

Sample Question 3 — Troubleshooting

A server is experiencing intermittent network connectivity issues. Which tool would be most appropriate to diagnose this problem?

  1. A. Ping
  2. B. Traceroute
  3. C. Wireshark (Correct answer)
  4. D. nslookup

Correct answer: C

Explanation: Wireshark is a network protocol analyzer that can capture and analyze network traffic, making it ideal for diagnosing intermittent connectivity issues. While Ping and Traceroute can help identify basic connectivity problems, they are not as detailed as Wireshark. nslookup is used for DNS queries, not general network troubleshooting.

Sample Question 4 — Troubleshooting

You are tasked with verifying the integrity of a backup after a recent server crash. Which method is best for ensuring the backup is reliable?

  1. A. Check the backup file size against the original data.
  2. B. Perform a test restore on a separate system. (Correct answer)
  3. C. Verify the backup completion logs for errors.
  4. D. Ensure the backup was stored on a different physical drive.

Correct answer: B

Explanation: Performing a test restore on a separate system is the most reliable method to verify the integrity and usability of a backup. This ensures that the backup can be successfully restored and is free from corruption. Options A, C, and D provide some assurance but do not confirm the backup's reliability as effectively as a test restore.

Sample Question 5 — Troubleshooting

A server application is running slowly after a recent patch. What is the first step you should take to identify the cause?

  1. A. Roll back the patch to see if performance improves.
  2. B. Check the server's CPU and memory usage. (Correct answer)
  3. C. Reinstall the application to ensure proper configuration.
  4. D. Contact the application vendor for support.

Correct answer: B

Explanation: Checking the server's CPU and memory usage is the first step in identifying performance issues following a patch. This can help determine if the patch has increased resource consumption. Rolling back the patch (A), reinstalling the application (C), and contacting the vendor (D) are actions that might be taken later, but initial diagnostics should focus on resource usage.

Sample Question 6 — Troubleshooting

A server is experiencing frequent unexpected shutdowns. Which of the following is the MOST likely cause of this issue?

  1. A. Insufficient cooling leading to overheating (Correct answer)
  2. B. Incorrect IP addressing configuration
  3. C. Outdated firmware on network interface cards
  4. D. Misconfigured VLAN settings

Correct answer: A

Explanation: Unexpected shutdowns are often caused by overheating due to insufficient cooling. Ensuring proper airflow and cooling mechanisms are in place can prevent this. Incorrect IP addressing, outdated firmware on network cards, and misconfigured VLANs typically lead to connectivity issues rather than shutdowns.

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