CV0-004 Operations and Support Practice Question
A cloud engineer must ensure that a critical Azure virtual machine automatically restarts if the guest operating system becomes unresponsive, even when the Azure host is healthy. Which Azure feature should be configured?
⚠ Common exam trap
A common mix-up: candidates confuse host-level redundancy features such as Availability Zones with guest-level health remediation, when only application health monitoring with automatic repair restarts an unresponsive guest OS.
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
✓
Azure virtual machine application health monitoring with automatic repair
Azure virtual machine application health monitoring probes the guest and, with automatic repair enabled, restarts the VM when the probe reports an unhealthy guest. This targets the specific case of an unresponsive operating system on a healthy host. Availability Zones, autoscale, and Site Recovery address infrastructure redundancy, capacity, and cross-region failover respectively, none of which restart a hung guest.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Azure Monitor autoscale on the virtual machine scale set
Why it's wrong here
Autoscale adds or removes instances based on metrics such as CPU, which changes capacity but does not restart a single unresponsive VM. It also applies to scale sets, not to standalone VMs in the way required. Guest OS hangs are not a signal autoscale evaluates, so this would not remediate the described condition.
- ✗
Azure Availability Zones for the virtual machine
Why it's wrong here
Availability Zones protect against datacenter-level failures by placing resources in physically separate locations, but they do not detect or remediate an unresponsive guest OS on a healthy host. Zone placement affects where the VM runs, not whether it is restarted after a guest-level hang. It addresses infrastructure redundancy rather than guest health monitoring.
- ✗
Azure Site Recovery replication to a secondary region
Why it's wrong here
Site Recovery provides disaster recovery by replicating and failing over to another region, which is a heavier operation than restarting a hung VM in place. It does not monitor guest responsiveness or trigger an automatic reboot on the same host. Using it for a guest hang would introduce unnecessary failover complexity and potential data loss.
- ✓
Azure virtual machine application health monitoring with automatic repair
Why this is correct
Azure VM application health monitoring uses a health extension probe to detect an unresponsive guest and, when configured with automatic repair, can restart or recreate the VM if the probe fails. Because it evaluates guest-level responsiveness rather than host health, it addresses the exact scenario where the host is healthy but the OS is hung.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
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.