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NVIDIA NCA-AIIO Exam - Topic 1 Question 22 Discussion

Actual exam question for NVIDIA's NCA-AIIO exam

Question #: 22
Topic #: 1

[All NCA-AIIO Questions]

What is a key benefit of using NVIDIA GPUDirect RDMA in an AI environment?

AIt increases the power efficiency and thermal management of GPUs.

BIt reduces the latency and bandwidth overhead of remote memory access between GPUs.

CIt enables faster data transfers between GPUs and CPUs without involving the operating system.

DIt allows multiple GPUs to share the same memory space without any synchronization.

Show Suggested Answer

Suggested Answer: C

NVIDIA GPUDirect RDMA allows network adapters to directly access GPU memory, bypassing the CPU and operating system kernel. This accelerates data transfers between GPUs and CPUs (or other devices), reducing latency and CPU overhead in AI workflows, such as multi-node training. It doesn't focus on power efficiency or unsynchronized memory sharing, making faster transfers its key benefit.

(Reference: NVIDIA GPUDirect RDMA Documentation, Overview Section)

by Cristy at Jun 28, 2026, 02:33 PM

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Blondell

16 hours ago

I feel like option C sounds familiar, but I can't recall if it specifically mentioned the operating system.

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Sue

6 days ago

I remember a practice question about RDMA, and I think it mentioned something about bandwidth overhead. Could that be option B?

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Casie

11 days ago

I think the main benefit is related to reducing latency, but I'm not entirely sure if that's the only advantage.

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