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NVIDIA Exam NCP-AIN Topic 2 Question 5 Discussion

Actual exam question for NVIDIA's NCP-AIN exam
Question #: 5
Topic #: 2
[All NCP-AIN Questions]

[InfiniBand Troubleshooting]

You are troubleshooting InfiniBand connectivity issues in a cluster managed by the NVIDIA Network Operator. You need to verify the status of the InfiniBand interfaces. Which command should you use to check the state and link layer of InfiniBand interfaces on a node?

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Suggested Answer: B

To check the status and link layer of InfiniBand interfaces, the ibstat command is used. For example:

ibstat -d mlx5_0

This command provides detailed information about the InfiniBand device, including its state (e.g., Active), physical state (e.g., LinkUp), and link layer (e.g., InfiniBand).


by Hildred at Jun 15, 2025, 07:55 AM

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Lera
15 days ago
I'm going with B) ibstat -d mlx5_X. It's the InfiniBand-specific command, so it's got to be the right one. Unless it's secretly a trap question and the answer is actually 42...
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Leota
38 minutes ago
User1: I think B) ibstat -d mlx5_X is the way to go. It's specific to InfiniBand.
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Cristy
21 days ago
A) rdma show devices? Really? That's like using a sledgehammer to crack a nut. Go for the more targeted option, B).
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Claribel
22 days ago
C) ifconfig ib0 is the way to go. Old school, but it'll get the job done!
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Gladys
2 days ago
A) rdma show devices
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Cecil
1 months ago
I'm not sure, but I think D) ip link show dev ib0 could also be used to verify the state of the interfaces.
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Leslee
1 months ago
I agree with Jeniffer, ibstat command is used to check the status of InfiniBand interfaces.
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Jeniffer
1 months ago
I think the answer is B) ibstat -d mlx5_X.
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Marshall
2 months ago
D) ip link show dev ib0 looks good to me. It's a classic Linux command for checking network interface details.
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Carman
2 months ago
Hmm, I think B) ibstat -d mlx5_X is the right choice here. That should give me the InfiniBand interface status, including the link layer details.
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Elke
22 days ago
Agreed, that command will provide the necessary details for troubleshooting.
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Bethanie
1 months ago
I think B) ibstat -d mlx5_X is the right choice here.
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