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NVIDIA NCP-AII Exam Syllabus Topics:

TopicDetails
Topic 1
  • 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 2
  • 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.
Topic 3
  • 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 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
  • Physical Layer Management: Covers configuring BlueField network platform devices and setting up Multi-Instance GPU (MIG) partitioning for AI and HPC workloads.

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NVIDIA AI Infrastructure Sample Questions (Q146-Q151):

NEW QUESTION # 146
A customer has just completed the first boot of their DGX system and is prompted to create an administrative user. What is the correct approach for setting up this user to ensure secure BMC and GRUB access?

Answer: A

Explanation:
The correct approach is to create a unique, strong administrative user and avoid default or weak credentials.
NVIDIA DGX first-boot guidance states that the setup process creates an administrative user account for the system, BMC, and GRUB boot loader. DGX OS guidance also notes that the default BMC credentials stop working after new credentials are created, and earlier DGX OS guidance specifies that the username must use lower-case letters and a strong password. This matters because the BMC provides powerful out-of-band management functions, including remote console, power operations, firmware updates, and hardware monitoring. GRUB protection is also important because unauthorized boot-loader access can weaken system security or bypass controls. Creating separate usernames is not aligned with the documented first-boot flow where the administrative identity is reused for BMC and GRUB. Retaining defaults is insecure, and using a generic username with a simple password is unacceptable for enterprise production. In DGX infrastructure, secure first-boot credential setup is part of system hardening and operational readiness.


NEW QUESTION # 147
An infrastructure engineer in an AI factory has successfully replaced a power supply unit on an NVIDIA DGX H100. After installation, both the IN and OUT LEDs on the new power supply illuminate solid green. Which NVSM CLI command should the engineer use to quickly verify the overall system status and ensure it is operating as expected?

Answer: D

Explanation:
nvsm show health provides a quick overall health summary for the DGX system after hardware replacement. It is the appropriate command to confirm that the system is operating normally and that no health issues remain after the PSU installation.


NEW QUESTION # 148
During East-West fabric validation on a 64-GPU cluster, an engineer runs all_reduce_perf and observes an algorithm bandwidth of 350 GB/s and bus bandwidth of 656 GB/s. What does this indicate about the fabric performance?

Answer: B

Explanation:
When evaluating NVIDIA Collective Communications Library (NCCL) performance, it is vital to distinguish betweenAlgorithm BandwidthandBus Bandwidth. For an all_reduce operation, the Bus Bandwidth represents the effective data transfer rate across the hardware links, which includes the overhead of the ring or tree collective algorithm. In an NDR (400G) InfiniBand fabric, the theoretical peak per link is 50 GB/s (unidirectional). In a 64-GPU cluster (8 nodes of 8 GPUs), achieving a bus bandwidth of 656 GB/s indicates that the fabric is efficiently utilizing the multiple 400G rails available on the DGX H100. This result is considered optimal as it reflects near-line-rate performance when accounting for network headers and synchronization overhead. Algorithm bandwidth is naturally lower because it represents the "useful" data moved from the application's perspective. If the bus bandwidth were significantly lower, it would suggest congestion, cable faults, or sub-optimal routing.


NEW QUESTION # 149
You've installed a new NVIDIA GPU in your A1 server. After the installation and driver setup, you notice that while 'nvidia-smi' recognizes the GPU, the available memory reported is significantly lower than the GPU's specifications. What are the potential root causes and how would you systematically troubleshoot this?

Answer: E

Explanation:
Integrated graphics stealing system memory is a common cause, and disabling it frees up resources for the dedicated GPU. While a faulty GPU, BIOS settings, or driver issues are possibilities, integrated graphics is a more likely and easily verifiable cause. The reported memory is the total usable, not just allocated.


NEW QUESTION # 150
A leaf switch shows "FW Version Mismatch" alerts for transceivers after cluster expansion. Which tool validates transceiver firmware against expected versions?

Answer: B

Explanation:
flint is the NVIDIA/Mellanox firmware tool used to query and validate firmware images and versions for supported devices and components. It is the appropriate tool for checking transceiver firmware versions against expected levels after expansion.


NEW QUESTION # 151
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