Faulty component identification and replacement: Practice Questions — Troubleshoot and Optimize (NVIDIA-Certified Professional: AI Infrastructure)

Practice Questions: Faulty Component Identification and Replacement

These multiple-choice questions are designed to help you prepare for the Faulty Component Identification and Replacement section of the NVIDIA-Certified Professional: AI Infrastructure exam. Each question includes four options, the correct answer, and a brief explanation.

1. Question 1: A server in your AI infrastructure is unexpectedly shutting down during heavy workloads. Which component is most likely causing this issue?

   • A. Faulty GPU fan causing overheating
   • B. Corrupted operating system
   • C. Network cable unplugged
   • D. Insufficient disk space

   Answer: A

   Explanation: Overheating due to a faulty GPU fan can cause the server to shut down to prevent hardware damage. Identifying and replacing the fan is critical to restore stable operation.

2. Question 2: During diagnostics, you observe that one of the GPUs in a multi-GPU server is not detected by the system BIOS. What is the most probable faulty component?

   • A. Power supply unit (PSU)
   • B. PCIe riser or slot
   • C. Network interface card (NIC)
   • D. CPU cooler

   Answer: B

   Explanation: A faulty PCIe riser or slot can prevent the GPU from being detected. Replacing or reseating the riser or checking the slot can resolve this issue.

3. Question 3: A server experiences intermittent crashes and error logs indicate memory errors. Which component should be tested and potentially replaced first?

   • A. Hard drive
   • B. RAM modules
   • C. GPU
   • D. Network switch

   Answer: B

   Explanation: Memory errors typically indicate faulty RAM modules. Running memory diagnostics and replacing defective RAM is the standard troubleshooting step.

4. Question 4: After replacing a suspected faulty GPU, the server still fails to boot properly. What is the next component you should check?

   • A. CPU socket for bent pins
   • B. Network cables
   • C. Power connectors to the GPU
   • D. Storage drives

   Answer: C

   Explanation: Ensuring that power connectors to the GPU are properly connected is essential after replacement. A missing or loose power cable can prevent the GPU from functioning.

5. Question 5: A server’s RAID array shows degraded status and frequent I/O errors. Which component is most likely faulty?

   • A. RAID controller card
   • B. CPU
   • C. GPU fan
   • D. Network interface

   Answer: A

   Explanation: A faulty RAID controller card can cause degraded RAID status and I/O errors. Testing and replacing the RAID controller can restore proper storage functionality.

6. Question 6: You notice that a server’s system logs report repeated ECC errors on one memory channel. What is the appropriate action?

   • A. Replace the entire motherboard
   • B. Replace the RAM module on the affected channel
   • C. Update the server BIOS
   • D. Replace the CPU

   Answer: B

   Explanation: ECC errors localized to one memory channel usually indicate a faulty RAM module. Replacing the specific RAM stick is the targeted solution.

7. Question 7: After a power surge, a server fails to power on. Which component should be tested first for damage?

   • A. Power supply unit (PSU)
   • B. GPU
   • C. Network card
   • D. Hard drive

   Answer: A

   Explanation: The PSU is the most vulnerable component to power surges. Testing and replacing the PSU is the first step in restoring power functionality.

Mastering these types of questions will help you confidently identify and replace faulty components during the NVIDIA-Certified Professional: AI Infrastructure exam and in real-world troubleshooting scenarios.

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