CV0-004 Troubleshooting Practice Question
A cloud administrator notices that a virtual machine (VM) is running slowly. The hypervisor shows high CPU ready time for that VM. Which of the following is the most likely cause?
⚠ Common exam trap
CompTIA often tests the distinction between CPU ready time and other performance metrics, trapping candidates who confuse high CPU ready time with memory pressure or storage latency.
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
✓
Overcommitted physical CPU resources on the host
High CPU ready time indicates that the VM is ready to execute instructions but is waiting for the physical CPU to become available. This is a classic symptom of CPU overcommitment, where the host has more virtual CPUs (vCPUs) assigned to VMs than physical cores, causing contention. Option C correctly identifies this as the most likely cause.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
High disk I/O latency on the datastore
Why it's wrong here
High disk I/O latency would manifest as disk-related performance issues, not CPU ready.
- ✗
Insufficient memory allocated to the VM
Why it's wrong here
Insufficient memory would cause swapping or ballooning, not CPU ready time.
- ✓
Overcommitted physical CPU resources on the host
Why this is correct
Overcommitted CPU means the VM competes for physical cores, causing high ready time.
- ✗
Misconfigured virtual switch
Why it's wrong here
A misconfigured virtual switch would cause network issues, not high CPU ready time.
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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.