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NVIDIA NCP-AII Prüfungsplan:

Thema	Einzelheiten
Thema 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.
Thema 2	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.
Thema 3	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.
Thema 4	Physical Layer Management: Covers configuring BlueField network platform devices and setting up Multi-Instance GPU (MIG) partitioning for AI and HPC workloads.
Thema 5	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.

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NCP-AII Zertifizierungsfragen, NVIDIA NCP-AII PrüfungFragen

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NVIDIA AI Infrastructure NCP-AII Prüfungsfragen mit Lösungen (Q98-Q103):

98. Frage
A single-node stress test fails during the PCIe bandwidth validation phase. Which troubleshooting step is recommended first?

A. Reinstall NVIDIA drivers using apt-get install nvidia-driver-550.
B. Reduce PCIe Gen4 speed to Gen3 speed in BIOS settings.
C. Disable NVLink in BIOS to isolate PCIe performance.
D. Reseat the GPU, then rerun the test.

Antwort: D

Begründung:
The first recommended troubleshooting step is to reseat the GPU and rerun the test. A PCIe bandwidth validation failure on a single node often points to a physical or link-training issue before it points to software.
Possible causes include an incompletely seated GPU, riser or slot alignment problems, debris in the connector, mechanical stress, power delivery instability, or a PCIe link negotiating below the expected width or speed.
Reseating the GPU is a controlled hardware check that addresses the most direct physical causes while preserving the intended validated configuration. Reducing PCIe Gen4 to Gen3 may hide the problem by lowering the performance target, but it does not fix the failed validation. Disabling NVLink is unrelated to the PCIe bandwidth path and may alter the platform configuration unnecessarily. Reinstalling drivers can be considered later if the GPU is not recognized or the software stack is corrupted, but a bandwidth-only failure after stress testing should first be treated as a possible physical-layer or slot-level issue. After reseating, the administrator should verify link width and speed with NVIDIA and PCIe tools, then rerun diagnostics.

99. Frage
A team is installing the NVIDIA Run:ai control plane on a Kubernetes cluster. Which two (2) options are most critical to validate before proceeding? (Pick the 2 correct responses below)

A. Ensure Kubernetes is running on the cluster.
B. All cluster nodes have NVIDIA GPUs installed.
C. Helm is installed on the installer machine.
D. NTP is disabled to simplify time synchronization.

Antwort: A,C

Begründung:
NVIDIA Run:ai is an advanced orchestration platform designed to optimize GPU resource allocation within Kubernetes environments. Because Run:ai is cloud-native, its control plane and worker agents are deployed as Kubernetes resources. Therefore, the absolute first prerequisite is arunning Kubernetes cluster(Option B) to host the services. Secondly, Run:ai utilizesHelm, the package manager for Kubernetes, to manage its complex installation charts, deployments, and service configurations. Without Helm installed on the administrative machine (Option A), the installation scripts will fail to execute. While having GPUs (Option C) is the ultimate goal for the worker nodes, thecontrol planeitself can be installed on a cluster before all GPU hardware is physically present. Disabling NTP (Option D) is never recommended; in fact, accurate time synchronization is vital for the TLS certificates and logging used by Run:ai and Kubernetes.

100. Frage
When deploying a BlueField DPIJ in an inline security appliance role, which networking configuration is MOST efficient and provides the lowest latency for inspecting all traffic passing through the server?

A. Implement a hairpin configuration where traffic is sent to the DPIJ and then looped back to the same physical interface after inspection.
B. Configure the BlueField as a router, performing Layer 3 forwarding between subnets.
C. Configure the BlueField as a traditional bridge, forwarding traffic between two physical interfaces.
D. Utilize a switchdev-based configuration where the DPIJ directly programs the switch ASIC to steer traffic.
E. Use SR-IOV to create Virtual Functions (VFs) for both the host and the DPIJ, and then route traffic between them.

Antwort: D

Begründung:
A switchdev-based configuration offers the lowest latency because the DPIJ directly programs the switch ASIC. This allows for hardware-accelerated traffic steering and inspection without the overhead of traditional bridging or routing. Hairpinning introduces unnecessary latency, while SR-IOV and bridging add software processing overhead.

101. Frage
A cluster administrator is preparing to update the firmware on a DGX H100 system, including the GPU tray (baseboard). What is the correct sequence of steps to perform a safe and successful firmware upgrade?

A. Stop all GPU activity, update and reboot the BMC, update motherboard and tray components, perform a cold reset, and verify completion.
B. Update the BMC and skip the GPU tray and motherboard tray updates if the system appears healthy.
C. Perform a cold reset, stop all GPU activity, update and reboot the BMC, update motherboard and tray components, and verify completion.
D. Update the GPU tray first, then the motherboard tray, and reboot the BMC after all updates are complete.

Antwort: A

Begründung:
A safe DGX H100 firmware upgrade starts by stopping GPU activity to avoid workload disruption, then updating and rebooting the BMC so the management controller is current. After that, motherboard and tray components such as the GPU tray/baseboard are updated, followed by a cold reset to activate firmware fully and final verification to confirm completion.

102. Frage
An engineer needs to verify the current firmware versions of all components (ATF, BSP, NIC, UEFI) on a BlueField-3 DPU's BMC. Which Redfish API command provides this information?

A. mstflint -d <PCI_ID> query full
B. curl -k -u root:<password> -X GET https://<DPU-BMC-
IP>/redfish/v1/UpdateService/FirmwareInventory
C. mlxconfig -d <dev> q
D. curl -k -u root:<password> -X GET https://<DPU-BMC-IP>/redfish/v1/UpdateService/FirmwareList

Antwort: B

Begründung:
The Redfish UpdateService/FirmwareInventory endpoint is used to retrieve firmware inventory details from the BlueField DPU BMC, including installed firmware versions for components such as ATF, BSP, NIC, and UEFI.

103. Frage
......

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