VCP-DCV vSphere Performance and Scaling Practice Question
Which TWO actions are effective in reducing CPU ready time on a vSphere host that is heavily overcommitted on CPU? (Choose two.)
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
✓
Add more hosts to the cluster.
Reducing the number of vCPUs on over-provisioned VMs directly decreases scheduling contention. Adding more hosts to the cluster increases the pool of physical CPUs, reducing overcommitment. Increasing vCPUs worsens the issue. Enabling hyperthreading does not reduce ready time if the host is already CPU-bound. Configuring CPU affinity restricts scheduling and can increase ready time.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Add more hosts to the cluster.
Why this is correct
More hosts spread the load, increasing available pCPUs and reducing contention.
- ✗
Enable hyperthreading on the host CPUs.
Why it's wrong here
Hyperthreading can increase capacity but does not directly reduce ready time if pCPUs are saturated.
- ✗
Increase the number of vCPUs on VMs with high ready times.
Why it's wrong here
Increasing vCPUs exacerbates overcommitment and increases ready time.
- ✓
Reduce the number of vCPUs on over-provisioned VMs.
Why this is correct
Reducing vCPUs lessens scheduling pressure, lowering ready time.
- ✗
Configure CPU affinity to pin vCPUs to specific pCPUs.
Why it's wrong here
CPU affinity restricts the scheduler and can increase ready time.
Go deeper
Related to this question
About these practice questions
This VCP-DCV question is part of Courseiva's 498-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This VCP-DCV practice question is part of Courseiva's free VMware 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 VCP-DCV exam.