2026 NCP-AII: NVIDIA AI Infrastructure–Reliable Latest Exam Bootcamp

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NVIDIA NCP-AII Exam Syllabus Topics:

TopicDetails
Topic 1
  • Physical Layer Management: Covers configuring BlueField network platform devices and setting up Multi-Instance GPU (MIG) partitioning for AI and HPC workloads.
Topic 2
  • Cluster Test and Verification: Covers full cluster validation through HPL and NCCL benchmarks, NVLink and fabric bandwidth tests, cable and firmware checks, and burn-in testing using HPL, NCCL, and NeMo.
Topic 3
  • System and Server Bring-up: Covers end-to-end physical setup of GPU-based AI infrastructure, including BMC
  • OOB
  • TPM configuration, firmware upgrades, hardware installation, and power and cooling validation to ensure servers are workload-ready.
Topic 4
  • Control Plane Installation and Configuration: Covers deploying the software stack including Base Command Manager, OS, Slurm
  • Enroot
  • Pyxis, NVIDIA GPU and DOCA drivers, container toolkit, and NGC CLI.
Topic 5
  • Troubleshoot and Optimize: Covers identifying and replacing faulty hardware components such as GPUs, network cards, and power supplies, along with performance optimization for AMD
  • Intel servers and storage.

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NVIDIA AI Infrastructure Sample Questions (Q31-Q36):

NEW QUESTION # 31
An engineer needs to completely remove NVIDIA GPU drivers from an Ubuntu 22.04 system to troubleshoot conflicts. Which command sequence ensures all driver components are purged?

Answer: C

Explanation:
The correct command sequence is sudo apt-get purge nvidia-* & & sudo apt-get autoremove. Purging removes NVIDIA driver packages and their configuration files, while autoremove removes dependency packages that were installed automatically and are no longer required. NVIDIA's current data center driver removal guidance for Ubuntu 22.04 and 24.04 uses apt remove --autoremove --purge with NVIDIA-related package patterns, including driver, Fabric Manager, firmware, headless, DKMS, compute, decode, encode, and related libraries. A simple apt-get remove nvidia-driver-550 removes only one package and may leave DKMS modules, libraries, configuration files, Fabric Manager packages, or version-specific dependencies behind. Manually deleting /usr/lib/nvidia is unsafe because it bypasses package management and can leave the system in an inconsistent state. ubuntu-drivers uninstall is not the most complete answer for fully purging all NVIDIA driver components during conflict troubleshooting. After removal, administrators should verify loaded modules, package state, and reboot before installing the intended validated driver stack. Clean removal is important in AI infrastructure because driver conflicts can break CUDA, NCCL, DCGM, Fabric Manager, and container runtime behavior.


NEW QUESTION # 32
You have a server with two NVIDIA GPUs connected via NVLink. You want to verify that NVLink is functioning correctly. Which command(s) or tool(s) can you use to check the NVLink status and bandwidth?

Answer: A,E

Explanation:
'nvidia-smi nvlink -statuS provides a direct overview of the NVLink status, including link speed and errors. 'nvidia-smi topo shows the topology of the GPUs and how they are connected, including NVLink connections. 'Ispci' lists PCl devices but doesn't provide NVLink- specific information. 'nvcc -version' checks the CUDA compiler version. 'nvidia-settings' is a GUI tool that can display some information, but it's less precise than 'nvidia-smr for NVLink status.


NEW QUESTION # 33
What command is needed to measure BER (Bit Error Rate)?

Answer: A

Explanation:
mlxlink -d <device> -c -e is used to inspect link status and extended physical-layer counters, including bit error rate information. This makes it the appropriate command for measuring BER on NVIDIA/Mellanox links.


NEW QUESTION # 34
You are troubleshooting a network performance issue in your NCP-AII environment. After running 'ibstat' on a host, you see the following output for one of the InfiniBand ports:

What does the 'LMC: 0' indicate, and what are the implications for network performance?

Answer: C

Explanation:
LMC (Link Mask Capability) indicates the level of link aggregation enabled. LMC: 0 means that link aggregation is disabled. This means that only one link is being used for communication, which could limit the overall bandwidth and potentially create a bottleneck if multiple GPUs are trying to communicate through that single link. Higher LMC values indicate that multiple links are aggregated together to increase bandwidth.


NEW QUESTION # 35
Which statement best explains why maintaining high cable signal quality is essential in modern high-speed data centers?

Answer: D

Explanation:
The best answer is B because it explains the operational impact of cable signal quality on the entire high- speed fabric. In NVIDIA AI clusters, InfiniBand and high-speed Ethernet links carry latency-sensitive GPU communication traffic for NCCL, RDMA, distributed training, storage access, and control-plane services.
Poor signal quality increases bit error rates, which can lead to corrected errors, retransmissions, degraded throughput, congestion, timeouts, and unstable workload performance. NVIDIA cabling guidance explains that high-rate InfiniBand networks require excellent signal integrity and low BER, and NVIDIA Ethernet documentation notes that FEC helps detect and correct bit errors on high-speed links. However, FEC is not a substitute for poor cabling; excessive physical-layer errors still reduce performance and complicate troubleshooting. Option C is partially true because EMI and crosstalk can contribute to errors, but it is narrower than the full impact. Option D is also partially true, but it focuses only on FEC. Option A is incorrect because cable length, media type, connector type, and supported transceiver specifications remain critical in modern AI data center deployments.


NEW QUESTION # 36
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