Q: 10
A system administrator of a high-performance computing (HPC) cluster that uses an InfiniBand fabric
for high-speed interconnects between nodes received reports from researchers that they are
experiencing unusually slow data transfer rates between two specific compute nodes. The system
administrator needs to ensure the path between these two nodes is optimal.
What command should be used?
Options
Discussion
Option A
A . The question wants to find the actual path packets take between two nodes, which is exactly what
ibtracert does-like traceroute for InfiniBand. D (ibnetdiscover) just gives you the general topology, not the node-to-node path. Easy trap there if you're not careful! Open to any counterpoints but pretty sure it's A.Option A
A . Official guide and hands-on lab examples both point to ibtracert for path analysis between nodes, not just overall mapping.
I've seen similar in exam reports, it's A for node-to-node path checks.
A
Yeah, for just connectivity testing ibping (C) is quick, but here you need to see the actual path between nodes. ibtracert shows all the hops in the InfiniBand fabric which helps spot if routing or cabling is off. Pretty sure A fits best for troubleshooting slow routes. Correct me if I missed something.
Yeah, for just connectivity testing ibping (C) is quick, but here you need to see the actual path between nodes. ibtracert shows all the hops in the InfiniBand fabric which helps spot if routing or cabling is off. Pretty sure A fits best for troubleshooting slow routes. Correct me if I missed something.
Why not D? It looks like a topology discovery trap, but for tracing specific node-to-node paths A is what you want.
Maybe A. Had something like this in a mock and ibtracert was needed for actual path tracing not just general status.
A tbh. D is tempting but it's more for topology, not node-to-node path trace.
Don’t think it’s B or D. A is the only one that actually traces the path between two hosts, which is what you want for slow data between specific nodes. D gives you the whole topology, but not hop-by-hop between nodes. Correct me if I’m off here.
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