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NVIDIA NCP-AII Exam Syllabus Topics:

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

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NVIDIA AI Infrastructure Sample Questions (Q75-Q80):

NEW QUESTION # 75
You need to uninstall all NVIDIA drivers and associated packages from a Linux system cleanly. Which command sequence is the most reliable for achieving this after stopping the display manager (e.g., 'sudo systemctl stop gdm3')?

A. Running the .run' installer with the '-uninstall' option (if the driver was installed this way)
B. 'sudo yum remove nvidia- (on RHEL/CentOS-based systems)
C. Deleting the Vusr/lib/nvidia and 'lusr/share/nvidia directories.
D. 'sudo apt purge nvidia- (on Debian/Ubuntu-based systems)
E. 'sudo dnf remove nvidia- (on Fedora-based systems)

Answer: A,B,D,E

Explanation:
The appropriate package manager command (like 'apt purge' , 'yum remove' , or 'dnf remove' with the 'nvidia- wildcard) is the most reliable for removing driver packages. If the driver was installed using the ' .'run' installer, running it with '-uninstall' is also effective. Directly deleting directories is not recommended as it may leave behind configuration files and dependencies. Always stop the display manager before uninstalling to avoid conflicts.

NEW QUESTION # 76
An InfiniBand fabric is experiencing intermittent packet loss between two high-performance compute nodes. You suspect a faulty cable or connector. Besides physically inspecting the cables, what software-based tools or techniques can you employ to diagnose potential link errors contributing to this packet loss?

A. All of the above
B. Use 'ibdiagnet' to perform a comprehensive fabric analysis, including link integrity checks and error detection.
C. Run 'ipeff or 'ibperf between the two compute nodes and analyze the reported packet loss rate. Correlate this with the error counters on the switches.
D. Monitor the port counters on the InfiniBand switches connected to the compute nodes. Look for excessive CRC errors, symbol errors, or other link-related error counts.
E. Disable port mirroring.

Answer: A

Explanation:
All of the mentioned options are valid techniques for diagnosing link errors. 'ibdiagnet' performs a thorough fabric analysis. Monitoring switch port counters reveals link-level errors. 'iperf/ibperf identifies packet loss, which can be correlated with switch error counters. A comprehensive approach combining these methods is most effective.

NEW QUESTION # 77
You are configuring a BlueField-2 DPU for link aggregation (bonding) with two 25GbE ports. After configuring the bond interface, you notice that traffic is not being distributed across both links. What are the two most likely causes of this issue? (Select TWO)

A. The switch connected to the DPU does not support the bonding mode configured on the DPU.
B. The bonding mode is set to 'balance-alb' and the ARP monitoring interval is too high.
C. The firewall on the DPU is blocking outgoing traffic on one of the interfaces.
D. The MTU size is different on the bond interface and the physical interfaces.
E. The physical interfaces are not configured with the same speed and duplex settings.

Answer: A,E

Explanation:
Bonding requires compatible configurations on both the server (DPU) and the switch. If the switch doesn't support the bonding mode, traffic won't be distributed correctly. Also, the speed and duplex settings must match on all interfaces in the bond for it to function properly. Mismatched MTU can cause packet fragmentation and performance issues but is less likely to prevent traffic distribution entirely. While ALB mode and ARP monitoring can impact load balancing, they're not the primary suspects. Firewalls might block traffic, but it is less related to the DPU setup.

NEW QUESTION # 78
A system administrator needs to use DCGM-exporter to export GPU metrics to an external system to create interactive dashboards. What system can the DCGM-exporter use without additional configuration?

A. Prometheus
B. DataDog
C. Grafana
D. Nagios

Answer: A

Explanation:
DCGM-exporter exposes NVIDIA GPU telemetry in a Prometheus-compatible metrics format by default. Prometheus can scrape these metrics directly, and the collected data can then be visualized in dashboard tools such as Grafana.

NEW QUESTION # 79
You are tasked with updating both NVIDIA GPU drivers and DOCA drivers on a set of servers used for AI workloads. The environment previously had an older driver stack and custom kernel modules. What is the most important step to successfully upgrade the drivers without causing conflicts?

A. Uninstall all existing GPU and DOCA-related drivers and associated kernel modules before the new install
B. Update the GPU driver leaving the DOCA and OFED drivers unchanged as long as they are detecting the hardware properly.
C. Validate the driver version post-install since the fresh install will overwrite the legacy drivers.
D. Keep the older driver running alongside the new version in case you need to roll back the upgrade.

Answer: A

Explanation:
Removing the existing GPU, DOCA, OFED, and related kernel-module stack before installing the new versions prevents version mismatches, stale kernel modules, and dependency conflicts. This is especially important when the servers previously used an older stack with custom modules.

NEW QUESTION # 80
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