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NVIDIA NCP-AII Exam Questions

NVIDIA NCP-AII Exam Questions Answers

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NVIDIA NCP-AII Practice Test Questions ( Updated) – Real Exam Questions & Dumps PDF

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NVIDIA NCP-AII Sample Questions – Free Practice Test & Real Exam Prep

Question #1

An administrator installs NVIDIA GPU drivers on a DGX H100 system with UEFI Secure Boot enabled. After reboot, the drivers fail to load. What is the first action to resolve this issue? 

  • A. Disable Secure Boot permanently in BIOS/UEFI settings.
  • B. Delete /etc/X11/xorg.conf to force driver reconfiguration. 
  • C. Enroll the Machine Owner Key (MOK) during system reboot and enter the recorded password. 
  • D. Reinstall drivers using apt-get install nvidia-driver-550 without rebooting. 
Answer: C
Question #2

After updating BlueField-3 DPU BMC firmware via Redfish, the engineer observes “TaskState: Running” but no progress after 15 minutes. How should they track the update’s completion status?

  • A. Check /var/log/messages on the DPU operating system for update logs. 
  • B. Query the DPU BMC with the Task ID of the installation process. 
  • C. Power cycle the DPU immediately to force a rollback. 
  • D. Run bfrec --status on the DPU to view flash progress. 
Answer: B
Question #3

An engineer is tasked with configuring Out-of-Band management for a DGX BasePOD deployment. Which network design will best ensure secure and reliable Out-of-Band management operations?

  • A. Use a single VLAN for both Out-of-Band management and compute fabric to simplify network design. 
  • B. Configure Out-of-Band management interfaces to be accessible from any subnet within the data center for maximum flexibility. 
  • C. Connect Out-of-Band management ports to the same switch as user traffic for easier troubleshooting. 
  • D. Place all BMC and management interfaces on an isolated Out-of-Band network with access restricted by firewall rules. 
Answer: D
Question #4

During server maintenance, a system administrator wants to ensure that the NVIDIA DGX server has sufficient disk space for operational activities. The administrator is scripting an alert system that will notify the team if disk space falls below a threshold. Which command could be included in the maintenance script to check the available disk space on the server?

  • A. nvidia-smi --query-disk-space 
  • B. du -sh /home/* 
  • C. df -h | grep '/var' 
  • D. lsof +L1 
Answer: C
Question #5

You must validate all physical cabling as part of the network bring-up phase in a new NVIDIA GPU cluster deployment. The design requires you to confirm that each cable matches the intended topology, all links are functional, and future troubleshooting and scalability are supported. Which two steps are essential to an effective recommended cabling validation process during cluster deployment? Pick the 2 correct responses below.

  • A. Focus on validating the highest bandwidth links first, deferring non-critical cable mislabeling until after initial workloads are deployed and tested. 
  • B. Run link tests only after the entire network is built and powered on to avoid redundant troubleshooting during bring-up. 
  • C. Run the cable validation process incrementally during deployment, section by section, to catch and resolve errors as early as possible. 
  • D. Compare every cable’s physical connection to the planned topology diagram and validate correct ports and link paths. 
Answer: C,D
Question #6

During a 72-hour HPL burn-in test on a DGX H100 cluster, one node shows a 15% performance drop after 48 hours. What are the two most likely causes and diagnostic steps? Pick the 2 correct responses below.

  • A. MPI configuration error; rerun with --cpu-affinity adjustments. 
  • B. Network packet loss; analyze ibdiagnet reports. 
  • C. Thermal throttling due to cooling issues; check nvidia-smi dmon. 
  • D. Memory corruption; reboot the node and reduce problem size N. 
Answer: B,C
Question #7

A DGX H100 system shows intermittent “Link Down” errors on a 200G DAC cable. CVT reports “No Signal” despite physical connection. What is the first hardware check?

  • A. Replace the switch’s optical transceiver with a higher-wattage model. 
  • B. Reconfigure the port for 100G speeds via NVIDIA MST. 
  • C. Upgrade all leaf switches to support RS-FEC. 
  • D. Verify cable compatibility via the ConnectX-7 firmware validated adapters list and inspect connectors for damage. 
Answer: D
Question #8

You are training a deep neural network using NCCL to coordinate communication across four GPUs in a single node. During early performance testing, you notice inconsistent scaling and longer-than-expected training times, even though all GPUs are being used. Which strategy would most effectively improve NCCL efficiency and collective operation performance in this setting?

  • A. Adjust the batch size so that each GPU receives an equal-sized portion of the batch, ensuring all GPUs process similar workloads and communication is evenly distributed. 
  • B. Assign the largest possible workload to the first GPU to maximize its utilization, and allow the remaining GPUs to process smaller or variable batch sizes as needed. 
  • C. Disable automatic load balancing so that the deep learning framework can dynamically assign samples to any GPU available during each iteration. 
  • D. Increase the communication frequency between GPUs while allowing workloads to be unevenly split, so synchronization is more frequent and model updates happen faster. 
Answer: A
Question #9

You are leading a project to enhance the energy efficiency of a data center that heavily relies on AI workloads. NVIDIA suggests moving beyond traditional metrics like Power Usage Effectiveness (PUE) to better capture the efficiency of modern data centers. Which strategy should you prioritize to develop more accurate energy-efficiency metrics? 

  • A. Focus on integrating kilowatt-hours into existing metrics to better reflect the actual energy used for productive work. 
  • B. Use Power Usage Effectiveness as the primary metric while supplementing it with additional measures of useful work done per unit of energy. 
  • C. Develop benchmarks tailored to specific workloads, such as MLPerf for AI applications, to better understand energy use in real-world scenarios. 
  • D. Use watts-used as the primary measure of efficiency, as it accurately reflects the power input at any given time. 
Answer: C
Question #10

When configuring an out-of-core HPL burn-in for a 40B matrix on 8x H100 nodes, which environment variable prevents GPU out-of-memory errors while reserving space for drivers?

  • A. export HPL_OOC_SAFE_SIZE=4.0 
  • B. export HPL_OOC_MODE=0 
  • C. export HPL_OOC_NUM_STREAMS=8 
  • D. export HPL_OOC_MAX_GPU_MEM=90 
Answer: A
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