Q: 8
[InfiniBand Troubleshooting]
As the network administrator for a large-scale AI research cluster, you are responsible for ensuring
seamless data flow across an InfiniBand east-west fabric that interconnects hundreds of compute
nodes.
Which tool would you use to trace and discover the network paths between nodes on this InfiniBand
east-west fabric?
Options
Discussion
I don’t think it’s B. C since the question is about full discovery, not just verifying one path.
C imo. ibnetdiscover gives you the full InfiniBand topology, not just a single path check. B (ibpathverify) is more for verifying a specific connection between two nodes, easy to mix up here.
C is the one that makes sense here. ibnetdiscover will actually map out the entire InfiniBand topology, which is what you need when tracing paths across lots of nodes. The others are more for Ethernet or just checking a single path, not full discovery. I think this fits what the question asks but open to hear if someone sees it differently.
Its C for this one. ibnetdiscover is specifically made for fabric-wide discovery and gives you the map you need between nodes, which matches what the question asks. B (ibpathverify) is really just to check if a specific connection works, not for seeing the whole layout. Pretty confident here but let me know if anyone reads it differently.
Its C. B is a common trap since it checks path health but doesn't map the whole fabric like C does.
C imo. ibnetdiscover gives you the overall fabric map and shows all the links between nodes, so for "discovering" paths, that's what I'd choose. B (ibpathverify) is more for checking if a path is healthy, not for getting the full topology. Pretty sure exam questions want you to spot that difference.
Its C. But if you wanted to test a specific path for issues, you'd use ibpathverify not ibnetdiscover.
I'd go with B here. ibpathverify sounds right for tracing between nodes specifically, not full topology. Anyone see it used this way?
B or C? I feel like ibnetdiscover (C) is the one from the official docs for mapping the whole InfiniBand fabric. B (ibpathverify) seems more targeted at checking individual paths between two endpoints, not full discovery. Anyone try hands-on labs for this before? I found practice tests usually push you toward C for cluster-wide mapping.
B not C
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