Hardware fault identification and troubleshooting: Practice Questions — Troubleshoot and Optimize (NVIDIA-Certified Professional: AI Infrastructure)
Practice Questions: Hardware Fault Identification and Troubleshooting These multiple-choice questions are designed to help candidates prepare for the...
Practice Questions: Hardware Fault Identification and Troubleshooting
These multiple-choice questions are designed to help candidates prepare for the Hardware Fault Identification and Troubleshooting section of the NVIDIA-Certified Professional: AI Infrastructure exam. Each question tests your understanding of identifying and resolving hardware faults in NVIDIA AI infrastructure environments.
Question 1
A GPU in a server is intermittently failing to initialize during system boot. Which of the following is the most likely cause?
- A. Faulty PCIe riser cable
- B. Incorrect BIOS version
- C. Insufficient power supply wattage
- D. Outdated GPU driver
Correct answer: A
Explanation: A faulty PCIe riser cable can cause intermittent hardware initialization failures because it disrupts the physical connection between the GPU and motherboard. While BIOS and drivers affect software-level initialization, hardware connection issues are the primary cause here.
Question 2
During diagnostics, a server’s fan speed is abnormally high and the system reports overheating warnings. What is the best first step to troubleshoot this hardware fault?
- A. Replace the GPU immediately
- B. Check for dust buildup and clean cooling components
- C. Update the server firmware
- D. Increase the fan speed manually in BIOS
Correct answer: B
Explanation: Dust buildup can obstruct airflow and cause overheating. Cleaning cooling components is a fundamental first step before considering hardware replacement or firmware updates.
Question 3
A server fails POST (Power-On Self-Test) and emits a series of beeps. What is the most effective way to identify the faulty component?
- A. Refer to the motherboard beep code documentation
- B. Replace all memory modules
- C. Update the BIOS
- D. Run a software diagnostic tool
Correct answer: A
Explanation: Beep codes are designed to indicate specific hardware faults. Consulting the motherboard beep code documentation allows precise identification of the faulty component.
Question 4
One GPU in a multi-GPU server shows a hardware fault LED indicator. After reseating the GPU, the fault persists. What should be your next troubleshooting step?
- A. Replace the GPU with a known good unit
- B. Update the GPU driver
- C. Reinstall the operating system
- D. Check network connectivity
Correct answer: A
Explanation: If reseating does not resolve the hardware fault, replacing the GPU with a known good unit helps confirm whether the GPU itself is defective.
Question 5
After a recent power outage, a server fails to power on. Which hardware component is most likely to have failed?
- A. CPU
- B. Power supply unit (PSU)
- C. Network interface card
- D. Storage drive
Correct answer: B
Explanation: Power outages commonly cause PSU failure or damage. The PSU is responsible for supplying power to all components, so a failure here prevents the server from powering on.
Question 6
Which tool is best suited for diagnosing hardware faults related to GPU temperature and power consumption in an NVIDIA AI infrastructure server?
- A. NVIDIA System Management Interface (nvidia-smi)
- B. Windows Task Manager
- C. Linux top command
- D. GPU driver installer
Correct answer: A
Explanation: nvidia-smi provides detailed real-time monitoring of GPU temperature, power usage, and fault status, making it ideal for hardware fault diagnosis.
Question 7
During troubleshooting, you suspect a faulty DIMM module is causing server instability. What is the most reliable method to confirm this?
- A. Run a memory diagnostic tool and test each DIMM individually
- B. Update the server BIOS
- C. Replace the CPU
- D. Reinstall the operating system
Correct answer: A
Explanation: Running memory diagnostics and testing each DIMM individually isolates the faulty memory module, confirming the cause of instability.
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