Question 665 of 977
CV0-004 Troubleshooting Practice Question
A cloud engineer is troubleshooting a VM that is experiencing high latency. The VM is hosted on a hypervisor with other VMs. Which TWO metrics should the engineer review to identify if resource contention is occurring?
⚠ Common exam trap
CompTIA often tests the distinction between guest-level metrics (swap usage, disk queue length) and hypervisor-level metrics (ballooning, ready time), and the trap here is that candidates confuse swap usage (guest OS paging) with memory ballooning (hypervisor reclaim), or assume network packet drops indicate VM contention rather than network issues.
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
✓
Memory ballooning
Memory ballooning (A) is a VMware mechanism where the hypervisor reclaims idle memory from a VM by inflating a balloon driver, forcing the VM to swap. High ballooning indicates memory overcommitment and contention, directly causing latency. CPU ready time (B) measures the time a VM is ready to run but waiting for a physical CPU core; elevated ready time signals CPU contention among VMs on the same hypervisor.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Memory ballooning
Why this is correct
Correct; memory ballooning indicates memory contention.
- ✓
CPU ready time
Why this is correct
Correct; high CPU ready time indicates CPU contention.
- ✗
Network packet drops
Why it's wrong here
Incorrect; packet drops indicate network issues, not resource contention.
- ✗
Swap usage
Why it's wrong here
Incorrect; swap usage can indicate memory pressure but ballooning is the direct metric.
- ✗
Disk queue length
Why it's wrong here
Incorrect; disk queue length indicates storage contention, not CPU/memory.
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Last reviewed: Jun 30, 2026
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.
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