NVIDIA NCP-AIN Exam - Topic 1 Question 9 Discussion

Actual exam question for NVIDIA's NCP-AIN exam

Question #: 9
Topic #: 1

[InfiniBand Troubleshooting]

You are tasked with troubleshooting a link flapping issue in an InfiniBand AI fabric. You would like to start troubleshooting from the physical layer.

What is the right NVIDIA tool to be used for this task?

Anvidia-smi utility

Bmlxlink utility

Ctcpdump tool

Show Suggested Answer

Suggested Answer: B

The mlxlink tool is used to check and debug link status and issues related to them. The tool can be used on different links and cables (passive, active, transceiver, and backplane). It is intended for advanced users with appropriate technical background.

by Ezekiel at Jul 29, 2025, 10:32 PM

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Niesha

6 months ago

Surprised mlxlink is the answer, I always thought it was more complex!

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Derick

6 months ago

Wait, tcpdump? Isn't that for network traffic analysis?

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Tarra

6 months ago

Yeah, mlxlink is the right choice here.

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Sol

7 months ago

I thought nvidia-smi was the go-to for everything NVIDIA?

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Tyisha

7 months ago

Definitely the mlxlink utility for physical layer issues.

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Alyce

8 months ago

I keep mixing up tcpdump with other network tools; I don't think it's the right one for physical layer troubleshooting.

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Elke

8 months ago

I think we had a practice question about link issues, and mlxlink was mentioned as a tool for troubleshooting.

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Buffy

8 months ago

I'm not entirely sure, but I feel like nvidia-smi is more for GPU monitoring than physical layer issues.

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Lashawn

8 months ago

I remember we discussed the mlxlink utility in class for checking physical connections, so I think that might be the right choice here.

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Alton

9 months ago

I'm a bit confused by this question. I know InfiniBand is a high-performance network technology, but I'm not super familiar with the specific tools used to troubleshoot it. I'll have to do some quick research on InfiniBand and the available NVIDIA tools before answering this one.

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Phil

9 months ago

Okay, let me think this through step-by-step. We're looking for an NVIDIA tool to troubleshoot the physical layer of an InfiniBand fabric. The options are nvidia-smi, mlxlink, and tcpdump. I'm pretty sure tcpdump is a general network troubleshooting tool, not specific to NVIDIA or InfiniBand. That leaves nvidia-smi and mlxlink. Based on the question, I think mlxlink is the right choice here.

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Catrice

9 months ago

Hmm, I'm a bit unsure about this one. I know nvidia-smi is a common NVIDIA tool, but I'm not sure if it's the right one for troubleshooting InfiniBand physical layer issues. I'll have to think this through carefully.

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Alyce

9 months ago

This seems like a pretty straightforward question. I'm pretty sure the right tool to use for troubleshooting the physical layer of an InfiniBand fabric is the mlxlink utility.

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Lauran

9 months ago

I bet the answer is B, the mlxlink utility. It's like the Swiss Army knife of InfiniBand troubleshooting tools. Gotta love those NVIDIA engineers!

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Kassandra

10 months ago

Wait, we're supposed to use a tool from NVIDIA? I thought this was an InfiniBand issue. Does NVIDIA make tools for that? *scratches head*

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Jess

10 months ago

I've used the mlxlink utility before, and it's definitely the right choice here. It gives you all the details you need to diagnose physical layer issues.

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Chauncey

6 months ago

nvidia-smi is great, but not for this issue.

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Rasheeda

7 months ago

I agree, mlxlink is the best for physical layer checks.

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Lizette

7 months ago

I’ve had success with mlxlink too. Good choice!

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Idella

7 months ago

Definitely mlxlink! It shows link status clearly.

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Hortencia

11 months ago

But mlxlink utility is specifically designed for troubleshooting link flapping in InfiniBand AI fabric.

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Martin

11 months ago

Hmm, this one's a no-brainer! The mlxlink utility is the way to go for troubleshooting the physical layer of an InfiniBand AI fabric. It's the perfect tool for the job.

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