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LPI

117-304 · Question #38

Which one of the following commands can be used to output the Xen guest virtual machine information as an XML dump?

The correct answer is D. virsh dumpxml domainid. See the full explanation below for the reasoning.

Question

Which one of the following commands can be used to output the Xen guest virtual machine information as an XML dump?

Options

  • Axm export domainid
  • Bvirsh dump domainid
  • Cxm dump domainid
  • Dvirsh dumpxml domainid

How the community answered

(51 responses)
  • A
    4% (2)
  • B
    14% (7)
  • C
    8% (4)
  • D
    75% (38)

Community Discussion

7
Samuel O.Samuel O.Dec 4, 2025

The answer is D, virsh dumpxml domainid. The virsh command is the libvirt shell interface that bridges your management layer to the underlying hypervisor, and dumpxml is the specific subcommand that outputs a domain's full configuration as an XML file, which is exactly what you need for things like migrating configs or auditing a guest's setup. I have pulled dumpxml output on production Xen hosts more times than I can count, usually to inspect CPU pinning or network device definitions without cracking open virt-manager. The xm commands in options A and C are from the older Xen management toolstack and neither "export" nor "dump" are valid subcommands for XML output there, and option B with "virsh dump" is actually a memory dump command, not an XML config dump, so that one will bite you if you confuse the two on the job.

30
Yusuf A.Yusuf A.Nov 14, 2025

The trick here is that xm dump domainid sounds like it should work for Xen specifically, and I actually tried that on the lab box my senior set up and got an error, so do not fall for the Xen branding on option C. The right call is D, virsh dumpxml domainid, because virsh is the unified management tool that talks to the hypervisor and dumpxml is exactly the subcommand that spits out the guest config as an XML dump.

4
Anjali D.Anjali D.Nov 29, 2025

Our group landed on D, virsh dumpxml domainid, and everyone who tested it confirmed it outputs the full XML configuration of the guest domain to stdout, which is exactly what you need if you want to inspect or back up the VM definition.

3
Brenda K.Brenda K.Nov 9, 2025

Clock check first: this is a quick win, do not flag it, knock it out in under 30 seconds and move on. I keep coming back to B, virsh dump domainid. The virsh utility is the standard management shell for libvirt-managed guests, and libvirt absolutely wraps Xen under the hood when you are running a Xen hypervisor stack, so virsh is a completely valid tool in this environment. The word "dump" maps directly to the idea of outputting guest information, and virsh's dump subcommand is designed to capture and export domain state data, which lines up with what the question is asking for. The xm commands in C and A feel like distractors meant to trip you up with Xen-specific tooling, but the question says "output as XML dump" and virsh is the command set built around XML-formatted guest configuration by design. Lock in B and move to the next question.

-2
Nina C.Nina C.Nov 11, 2025

Brenda, totally see your reasoning, but virsh dump actually creates a memory crash dump rather than an XML configuration output, so D is the right pick because xm dumpxml is the Xen-native command that specifically outputs a domain's config in XML format.

0
Nina C.Nina C.Nov 24, 2025

This one showed up on my exam last week and I almost second-guessed myself because I kept thinking "dump" sounded right for xm, but then I remembered that virsh is the command-line tool for managing virtual machines and "dumpxml" literally has xml in the name, so D was the only one that made sense. Went with D, moved on, and sure enough it was correct.

-2
Anjali D.Anjali D.Nov 24, 2025

Good call trusting the name itself, and worth noting that virsh dumpxml gives you the live config while virsh define lets you push a modified XML back, so knowing both sides of that workflow really locks in why the command matters.

0
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