CV0-004 Troubleshooting Practice Question
An administrator notices that a cloud-hosted database is experiencing high latency during peak usage. The CPU and memory utilization on the DB server are below 50%, but disk IOPS are consistently at the provisioned limit. What should the administrator check first?
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 if the storage volume has an IOPS cap.
The symptoms (high latency, low CPU/memory utilization, but disk IOPS at provisioned limit) indicate the storage volume's IOPS cap is being hit, causing queueing and latency. Option A is incorrect because network bandwidth is not indicated as the bottleneck; CPU and memory are low, and latency is tied to disk. Option B is incorrect because adding storage volumes would not directly address the IOPS cap; it might spread load but does not increase the per-volume IOPS limit. Option D is incorrect because increasing vCPUs would not resolve an IOPS limitation; the CPU is not saturated.
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 network bandwidth between the DB and application servers.
Why it's wrong here
Network latency is not indicated by disk IOPS saturation.
- ✗
Add additional storage volumes and stripe data.
Why it's wrong here
Scaling would still hit the same IOPS cap problem.
- ✓
Check if the storage volume has an IOPS cap.
Why this is correct
Saturating the IOPS limit causes queuing and high latency.
- ✗
Increase the number of vCPUs on the DB server.
Why it's wrong here
CPU is underutilized, so adding vCPUs won't help latency.
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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.