VCP-DCV vSphere Performance and Scaling Practice Question
This VCP-DCV practice question tests your understanding of vsphere performance and scaling. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A large e-commerce company has a vSphere cluster with 16 hosts, each with 2 sockets of 10 cores (HT enabled) and 512 GB RAM. They run a mix of web and database VMs. During the holiday season, some VMs experience high CPU ready time, especially the database VMs. DRS is set to Fully Automated and migration thresholds are at default. The administrator notices that the cluster's CPU utilization averages at 60%, but some hosts are at 90% while others are at 30%. The VMs with high ready time are all on the highly utilized hosts. To resolve this, the administrator considers several options. Which action will most effectively balance CPU load and reduce ready time for the database VMs?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Decrease the DRS migration threshold from 3 to 1 to make it more aggressive.
Option A is correct. Decreasing the DRS migration threshold from 3 to 1 makes DRS more aggressive, migrating VMs even for small imbalances, thus spreading load more evenly. Option B is wrong; VM Monitoring is for fault detection, not load balancing. Option C is wrong; increasing the threshold makes DRS less aggressive, worsening the imbalance. Option D is wrong; shares only affect contention within a host, not migration triggers.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Create a resource pool for database VMs and set a higher CPU share value.
Why it's wrong here
Shares only affect relative entitlement on a single host; they do not trigger migrations to balance load across hosts.
✗
Increase the DRS migration threshold from 3 to 5 to reduce unnecessary migrations.
Why it's wrong here
A higher threshold makes DRS less proactive, allowing imbalances to persist and worsening ready time.
✗
Enable 'VM Monitoring' in the HA cluster settings.
Why it's wrong here
VM Monitoring restarts unresponsive VMs but does not balance CPU load.
✓
Decrease the DRS migration threshold from 3 to 1 to make it more aggressive.
Why this is correct
A lower threshold triggers migrations even for minor load imbalances, helping to spread VMs and reduce ready time on hot hosts.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the VCP-DCV exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which VCP-DCV exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
vSphere Performance and Scaling — This question tests vSphere Performance and Scaling — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Decrease the DRS migration threshold from 3 to 1 to make it more aggressive. — Option A is correct. Decreasing the DRS migration threshold from 3 to 1 makes DRS more aggressive, migrating VMs even for small imbalances, thus spreading load more evenly. Option B is wrong; VM Monitoring is for fault detection, not load balancing. Option C is wrong; increasing the threshold makes DRS less aggressive, worsening the imbalance. Option D is wrong; shares only affect contention within a host, not migration triggers.
What should I do if I get this VCP-DCV question wrong?
Identify which VCP-DCV exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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