CV0-004 Troubleshooting Practice Question
A cloud administrator is troubleshooting a performance issue where a web application is responding slowly. The application runs on virtual machines in a private cloud. The administrator has verified that CPU and memory utilization are within normal limits. Which TWO additional metrics should the administrator check to diagnose the issue?
⚠ Common exam trap
CompTIA often tests the distinction between VM-level metrics (CPU/memory) and infrastructure-level metrics (network/storage), trapping candidates who overlook that application performance can degrade due to external dependencies even when the VM itself appears healthy.
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
✓
Network latency between the application and database servers
Network latency between the application and database servers is a critical metric because slow database queries or network congestion can cause the web application to respond slowly even when CPU and memory on the VMs are normal. High latency increases round-trip time for SQL queries, directly impacting page load times. Disk I/O wait time on the hypervisor is also essential because excessive I/O wait indicates storage contention, which can throttle read/write operations for the VMs, leading to application sluggishness.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Number of running processes
Why it's wrong here
While many processes could cause CPU/memory pressure, those have already been ruled out; the number of processes alone is not a direct performance metric for slowdown.
- ✓
Network latency between the application and database servers
Why this is correct
High network latency can cause slow response times even if CPU and memory are fine, as the application waits for database queries.
- ✓
Disk I/O wait time on the hypervisor
Why this is correct
High disk I/O wait can cause virtual machines to stall, leading to slow application performance, even if CPU and memory are normal.
- ✗
Virtual machine snapshot size
Why it's wrong here
Snapshot size primarily affects storage space and backup times, not immediate performance.
- ✗
Hypervisor version
Why it's wrong here
Hypervisor version is a configuration item, not a real-time performance metric; it is unlikely to cause intermittent slowdown.
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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.