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NCP-AII Exam Score & Vce NCP-AII Torrent

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Quiz 2026 NVIDIA NCP-AII: NVIDIA AI Infrastructure – High Pass-Rate Exam Score

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NVIDIA AI Infrastructure Sample Questions (Q143-Q148):

NEW QUESTION # 143
You are tasked with installing the latest NVIDIA driver on a server running Ubuntu 22.04 for A1 workloads. You have downloaded the driver package 'NVIDIA-Linux-x86 64-535.104.05.run'. Before installation, what is the most critical step to ensure a smooth process, assuming secure boot is enabled?

A. Install the driver using 'apt install nvidia-driver-535' and let the system handle Secure Boot automatically.
B. Disable Secure Boot in the BIOS before installing the driver.
C. Simply run the ' .run' file using 'sudo ./NVlDlA-Linux-x86_64-535.104.05.run' .
D. Ensure the 'nouveau- driver is blacklisted by adding 'blacklist nouveau- to 'letc/modprobe.d/blacklist-nouveau.conf.
E. Create a DKMS module and sign the driver with a machine owner key (MOK) for Secure Boot compatibility.

Answer: D,E

Explanation:
Secure Boot requires kernel modules to be signed. Directly running the .run' file or disabling Secure Boot are generally not recommended. DKMS and MOK signing allows the driver to be validated by the system. Blacklisting nouveau ensures that it won't conflict with the NVIDIA driver. Installing via apt doesn't guarantee Secure Boot compatibility without further steps, so the best approach involves DKMS/MOK and blacklisting.

NEW QUESTION # 144
You are configuring a network for a distributed training job using multiple DGX servers connected via InfiniBand. After launching the training job, you observe that the inter-GPU communication is significantly slower than expected, even though 'ibstat' shows all links are up and active. What is the MOST likely cause of this performance bottleneck?

A. The CPU frequency scaling governor is set to 'powersave', limiting CPU performance.
B. The InfiniBand subnet manager (SM) is configured incorrectly or experiencing performance issues (e.g., path selection is suboptimal, congestion control is not enabled).
C. Incorrect placement of GPUs across NUMA nodes, leading to increased inter-node latency.
D. The default MTU size of 1500 is too small for efficient large data transfers.
E. The RDMA memory registration limit is too low, causing frequent memory registration and unregistration overhead.

Answer: B

Explanation:
While the other options could contribute to performance issues, the subnet manager (SM) is the MOST likely culprit. A poorly configured or malfunctioning SM can lead to suboptimal path selection (e.g., routing traffic through congested links or longer paths), which significantly increases latency and reduces bandwidth. Congestion control mechanisms, if not properly configured, can also fail to mitigate congestion, leading to packet loss and retransmissions, further degrading performance. Checking the SM logs and configuration is the first step in diagnosing this issue. Incorrect NIJMA placement, small MTIJ, powersave governor, and memory registration limits could also impact performance but are less likely to be the primary bottleneck if the links are up.

NEW QUESTION # 145
You are running a distributed training job across multiple nodes, using a shared file system for storing training dat a. You observe that some nodes are consistently slower than others in reading data. Which of the following could be contributing factors to this performance discrepancy? Select all that apply.

A. Uneven data distribution across the storage nodes.
B. Different CPU architectures on the nodes.
C. Network congestion between the slower nodes and the storage system.
D. Variations in the speed of the local temporary storage (e.g., /tmp) used for intermediate files.
E. Insufficient RAM on the slower nodes for caching data.

Answer: A,C,E

Explanation:
Network congestion (A) can directly impact the data transfer rate between the slower nodes and the storage. IJneven data distribution (B) means some storage nodes are more heavily loaded, leading to slower response times for nodes accessing data on those overloaded nodes. Insufficient RAM (D) limits the amount of data that can be cached locally, forcing more frequent reads from the slower storage system. CPU architecture (C) primarily affects compute performance, not 1/0. The speed of /tmp (E) is relevant if the training job uses local storage extensively for temporary files, but the question focuses on reading training data from the shared file system.

NEW QUESTION # 146
You observe high latency and low bandwidth between two GPUs connected via an NVLink switch. You suspect a problem with the NVLink link itself. Which of the following methods would be the most effective in diagnosing the physical NVLink link health?

A. Running a CUDA-aware memory bandwidth test specifically designed for NVLink.
B. Using 'ping' to check network connectivity between the servers.
C. Physically inspecting the NVLink cables for damage.
D. Using 'iperf3' to measure network throughput between the servers.
E. Examining system logs for NVLink-related error messages.

Answer: A,C,E

Explanation:
A CUDA-aware memory bandwidth test can specifically measure the NVLink link's performance. System logs can reveal hardware- level errors. Physical inspection can identify damaged cables. 'iperf3' and 'pings are network-level tools and don't directly test the NVLink link. Checking for error messages in System Logs also helps identify potential issues related to the NVLink switch and the link connections.

NEW QUESTION # 147
You're experiencing unexpected memory errors during the execution of a large-scale deep learning training job. Suspecting faulty memory modules, which diagnostic tool is best suited to perform a comprehensive memory test on the server's RAM?

A. Ishw
B. DCGM
C. nvprof
D. nvidia-smi
E. memtest86+

Answer: E

Explanation:
'memtest86+' is specifically designed for performing thorough memory tests on system RAM, identifying potential errors and hardware faults. 'nvidia-smi' is for GPU monitoring, 'nvprof is a profiler, DCGM can test GPU memory, but not system RAM specifically. 'Ishw' lists hardware information, but doesn't perform diagnostic tests.

NEW QUESTION # 148
......

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