easyMultiple ChoiceObjective-mapped
CV0-004 Practice Question: A cloud administrator notices that a virtual…
A cloud administrator notices that a virtual machine in a public cloud is running slower than expected. The VM is part of a production web application. The administrator has verified that the VM's CPU and memory utilization are below 50%. What should the administrator check next?
⚠ Common exam trap
CompTIA often tests the misconception that low CPU/memory always means the VM is underutilized, when in fact network or I/O throttling can cause severe performance issues without affecting compute metrics.
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
✓
Check the network bandwidth and I/O throttling limits.
When CPU and memory are well below capacity, performance degradation in a public cloud VM is often caused by resource throttling at the network or storage layer. Cloud providers enforce bandwidth caps and I/O limits per VM size, and hitting those limits can cause packet loss, queuing, and high latency even when compute resources are idle. Checking network bandwidth and I/O throttling limits is the correct next step to identify if the VM is being rate-limited.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Check the network bandwidth and I/O throttling limits.
Why this is correct
Correct. Performance issues with low CPU/memory often point to network or disk throttling.
- ✗
Migrate the VM to a different availability zone.
Why it's wrong here
Migration does not address performance throttling; it may even introduce latency.
- ✗
Increase the VM's vCPU count.
Why it's wrong here
Increasing vCPU may not help if CPU is not the bottleneck.
- ✗
Reboot the VM.
Why it's wrong here
Rebooting may temporarily clear issues but does not solve underlying throttling.
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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.