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NVIDIA NCA-AIIO Exam - Topic 1 Question 22 Discussion

What is a key benefit of using NVIDIA GPUDirect RDMA in an AI environment?
C) It enables faster data transfers between GPUs and CPUs without involving the operating system.
A) It increases the power efficiency and thermal management of GPUs.
B) It reduces the latency and bandwidth overhead of remote memory access between GPUs.
D) It allows multiple GPUs to share the same memory space without any synchronization.

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?

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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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Nobuko
4 days ago
Totally agree, B makes the most sense for performance.
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Junita
10 days ago
B is the right answer! It really cuts down on latency.
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Gail
15 days ago
Totally agree with B! Reducing bandwidth overhead is a game changer!
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Jill
20 days ago
Wait, can multiple GPUs really share memory without sync? That sounds risky!
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Brynn
25 days ago
A seems off. Power efficiency isn’t the main focus here.
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Justine
1 month ago
I thought C was the main advantage. Faster data transfers sound great!
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Mica
1 month ago
B is definitely the key benefit! Less latency is crucial for AI.
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Dyan
1 month ago
I’m leaning towards option B as the answer, but I’m a bit confused about the memory sharing aspect in option D.
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Blondell
2 months 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
2 months 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
2 months ago
I think the main benefit is related to reducing latency, but I'm not entirely sure if that's the only advantage.
upvoted 0 times
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