CV0-004 Troubleshooting Practice Question
Network Topology
A cloud administrator sees the output above when troubleshooting a virtual machine that is unresponsive. The VM is critical and must be restored quickly. What should the administrator do first?
⚠ Common exam trap
A common mix-up: candidates assume a paused VM requires a full restart or host-level intervention, but the CV0-004 exam expects you to recognize that `virsh resume` is the immediate, low-risk recovery action for a paused domain.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Resume the VM using the virsh resume command.
The output from `virsh list --all` shows the VM is in a 'paused' state, which means it is still resident in memory but not executing. The fastest way to restore a paused VM is to resume it with `virsh resume <vm-name>`, which immediately continues CPU execution without requiring a reboot or migration. This directly addresses the unresponsive behavior while preserving the VM's current memory state.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Resume the VM using the virsh resume command.
Why this is correct
Resuming with `virsh resume` restores a paused domain without rebooting, preserving memory state and avoiding downtime. The stem's constraint—a critical VM requiring rapid restoration—favours this over restarting, which would discard in-memory data and lengthen recovery. Paused VMs remain intact, so resumption is the fastest safe first action.
- ✗
Restart the libvirtd service on the host.
Why it's wrong here
Restarting libvirtd disrupts every VM on that host and does not address the unresponsive guest itself, delaying recovery of a critical workload. It is tempting because libvirtd manages the hypervisor layer, and would be correct if the daemon had crashed and stopped managing domains, not when a single VM is hung.
- ✗
Increase the memory allocation for the host to free resources.
Why it's wrong here
Adding host memory does not free existing resources and cannot be done instantly on a critical, unresponsive VM. It is tempting because memory pressure causes guest hangs, and would be correct when monitoring shows the host genuinely exhausted RAM and the VM could tolerate a reboot or reconfiguration.
- ✗
Migrate the VM to another host in the cluster.
Why it's wrong here
Live migration requires a responsive guest and shared storage; an unresponsive VM cannot be migrated and the attempt stalls, wasting the recovery window. It is tempting because migration moves workloads off failing hosts, and would be correct for planned maintenance or host degradation while the VM itself still runs normally.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CV0-004 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CV0-004 exam.