CV0-004 Troubleshooting Practice Question
Which TWO are common causes of virtual machine performance degradation in a cloud environment?
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
✓
Insufficient memory allocation
The correct answers are B and E. Insufficient memory allocation causes the VM to use swap space, significantly degrading performance. High CPU ready time indicates that the VM is waiting for CPU resources due to contention, another common cause of performance degradation. Security groups (A) affect access control, not performance. Network latency to storage (C) can impact storage performance but is not as common as CPU/memory issues. Incorrect DNS settings (D) cause name resolution failures, not performance degradation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Misconfigured security groups
Why it's wrong here
Affects access, not performance directly.
- ✓
Insufficient memory allocation
Why this is correct
Causes swapping and slow performance.
- ✗
Network latency to storage
Why it's wrong here
Less common; storage latency is usually internal.
- ✗
Incorrect DNS settings
Why it's wrong here
DNS affects name resolution, not VM performance.
- ✓
High CPU ready time
Why this is correct
Indicates vCPU overcommitment and contention.
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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.