NCP-AII by NVIDIA Actual Free Exam Questions And Answers

Question 1

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?

A. Create a unique, strong, lower-case username and password that will be used for both BMC and GRUB access, avoiding default or weak credentials.

B. Use "sysadmin" as the username and a simple password for ease of management.

C. Create separate usernames for BMC and GRUB to maximize flexibility.

D. Skip the creation of a new user and retain the default admin account for BMC and GRUB access.

Discussion 0

Correct Answer: A Vote an answer

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Question 2

An InfiniBand server stops working, and a system administrator runs the "ibstat" command that provides the following output:

What is the cause of the issue?

A. The HCA port is faulty.

B. There is no running SM in the fabric.

C. The neighboring switch port is faulty.

D. The cable is disconnected.

Discussion 0

Correct Answer: B Vote an answer

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Question 3

A system administrator needs to check the status of the RShim driver. What command should be used?

A. lspci -vvv | grep RShim

B. rshim status

C. systemctl status rshim

D. dmesg | grep rshim

Discussion 0

Correct Answer: C Vote an answer

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Question 4

An administrator needs to manually deploy the BlueField image on a target DPU. The administrator downloads the new image file and needs to flash it to the hardware. Which command should the administrator use?

A. bfb-install --rshim

B. /opt/mellanox/mlnx-fw-updater/mlnx_fw_updater.pl

C. apt install doca-runtime

D. dd if=/root/bf.image of=/dev/bf/ bs=4096k

Discussion 0

Correct Answer: A Vote an answer

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Question 5

A system administrator needs to install a GPU/DPU in a server. The server has a free PCI-e slot, there are enough free PCI-e lanes, and there is enough room for the card. Which procedure should be followed?

A. Ensure the server has enough power. Verify compatibility of cables with server's platform. Make sure the server is down to remove cables safely. Wear an ESD bracelet.

B. Ensure the server has enough power. Verify compatibility of cables with server's platform. Make sure the server is down to remove cables safely. Do not wear an ESD bracelet.

C. Ensure the server has enough power. Make sure the server is down to remove cables safely.Wear an ESD bracelet.

D. Ensure the server has enough power. Make sure the server is up and running with attached cables. Wear an ESD bracelet.

Discussion 0

Correct Answer: A Vote an answer

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Question 6

An HPC administrator observes that a distributed training workload generates heavy AllReduce traffic across hundreds of GPUs. Although each InfiniBand link is healthy, several links become heavily utilized while others remain nearly idle, limiting overall scalability. Which configuration change is most likely to improve communication efficiency?

A. Replace NVSwitch with PCIe switches

B. Enable multi-rail communication so traffic can utilize multiple network interfaces

C. Disable RDMA to simplify packet routing

D. Reduce GPU clock frequency to minimize communication demand

Discussion 0

Correct Answer: B Vote an answer

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Question 7

You are a network administrator responsible for configuring an East-West (E/W) Spectrum-X fabric using SuperNIC. The Bluefield 3 devices in your network should be a set to NIC mode with RoCE enabled to optimize data flow between servers. You have access to the Spectrum-X management tools and the necessary documentation. You need to use specific configuration commands to achieve this setup. Which of the following steps and commands are necessary to configure the Bluefield 3 devices in NIC mode for the E/W Spectrum-xX fabric using SuperNIC?
(Choose two.)

A. Use the command sudo mixconfig -d /dev/mst/<device> set DPU_MODE=1 to set up the Bluefield
3 devices in DPU (Data Processing Unit) mode.

B. Use the command sudo mixconfig -d /dev/mst/<device> set LINK_TYPE_P1=2 to enable Ethernet on the Bluefield 3 devices.

C. Use the command sudo mixconfig -d /dev/mst/<device> set DISABLE_SPECTRUM_X=1 to reduce overhead.

D. Use the command sudo mixconfig -d /dev/mst/<device> set
INTERNAL_CPU_OFFLOAD_ENGINE=1 to configure the SuperNIC to operate in NIC mode.

Discussion 0

Correct Answer: B,D Vote an answer

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Question 8

A researcher wants to allow a container to use only two specific GPUs out of four available ones (GPU 1 and GPU 2) on the host. The system is already set up for NVIDIA Docker with the container toolkit. Which Docker command will correctly assign only these GPUs to the container?

A. docker run --rm --gpus '"device=1,2"' nvidia/cuda nvidia-smi

B. docker run --gpus '"device=0,3"' nvidia/cuda nvidia-smi --query-gpu=uuid --format=csv

C. docker run --rm --gpus 2 nvidia/cuda nvidia-smi

D. docker run --gpus '"device=0,1"' nvidia/cuda nvidia-smi --query-gpu=uuid --format=csv

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Correct Answer: A Vote an answer

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Question 9

What is the purpose of using NCCL in verifying east/west fabric in an NVIDIA AI Factory?
(Choose two.)

A. To measure bandwidth between GPUs.

B. To measure the latency between GPUs.

C. To measure the storage network performance.

D. To measure the power consumption of GPUs.

Discussion 0

Correct Answer: A,B Vote an answer

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Question 10

A system administrator is installing a GPU into a server and needs to avoid damaging the device.
What item should be used?

A. Gloves

B. Anti-ESD strap

C. Protective film

D. Electric screwdriver

Discussion 0

Correct Answer: B Vote an answer

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Question 11

A data scientist needs to run a Jupyter notebook on specific GPU cards. What command should be used?

A. docker run --gpus I"device=UUID-ABCDEF,1" -p 8888:8888 jupyter/scipy-notebook:2023-09-25

B. docker run --runtime=nvidia -dpu "1,2" -p 8888:8888 jupyter/scipy-notebook:2023-09-25

C. docker run --dpu "1,2" -p 8888:8888 jupyter/scipy-notebook:2023-09-25

D. docker run --gpus all --limit-gpu ""device=UUID-ABCDEF" -p 8888:8888 jupyter/scipy- notebook:2023-09-25

Discussion 0

Correct Answer: A Vote an answer

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Question 12

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?

A. Suboptimal performance; algorithm bandwidth should match bus bandwidth

B. Inconclusive; rerun with point-to-point tests

C. Critical failure; bus bandwidth exceeds hardware capabilities

D. Optimal performance; bus bandwidth near theoretical peak for NDR InfiniBand

Discussion 0

Correct Answer: D Vote an answer

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Question 13

A system administrator needs to check the health of the DGX power supplies. What command should be used?

A. lspci |grep -i psu

B. nvsm show psus

C. ipmitool sdr |grep PWR_SYSTEM

D. nvidia-smi -q|grep -i power\ draw

Discussion 0

Correct Answer: B Vote an answer

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Question 14

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. curl -k -u root:<password> -X GET https://<DPU-BMC-
IP>/redfish/v1/UpdateService/FirmwareInventory

B. mstflint -d <PCI_ID> query full

C. curl -k -u root:<password> -X GET https://<DPU-BMC-IP>/redfish/v1/UpdateService/FirmwareList

D. mlxconfig -d <dev> q

Discussion 0

Correct Answer: A Vote an answer

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