- A
Verify that the vSAN network is configured with jumbo frames.
Why wrong: Incorrect: Jumbo frames are not a diagnostic step for latency.
- B
Enable vSAN encryption to improve performance.
Why wrong: Incorrect: Encryption does not improve performance.
- C
Increase the number of disk groups on each host.
Why wrong: Incorrect: Adding disk groups may not address latency.
- D
Check the vSAN performance service for object latency breakdown.
Correct: Performance service provides detailed latency metrics.
Question 107 of 521
VCP-DCV vSphere Architecture, Products and Solutions Practice Question
This VCP-DCV practice question tests your understanding of vsphere architecture, products and solutions. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 vSphere cluster using vSAN is experiencing high latency for some VMs. The administrator checks the vSAN skyline health and finds that all disk groups are healthy. Which additional step should the administrator take to diagnose the issue?
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
✓
Check the vSAN performance service for object latency breakdown.
The vSAN Performance Service provides granular, real-time and historical metrics for vSAN objects, including latency breakdowns at the VM, disk group, and physical disk levels. Since the skyline health check shows all disk groups as healthy, the next logical step is to use the Performance Service to pinpoint whether the high latency is due to congestion on a specific object, such as a VM virtual disk or a particular disk group component, rather than a hardware failure.
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.
- ✗
Verify that the vSAN network is configured with jumbo frames.
Why it's wrong here
Incorrect: Jumbo frames are not a diagnostic step for latency.
- ✗
Enable vSAN encryption to improve performance.
Why it's wrong here
Incorrect: Encryption does not improve performance.
- ✗
Increase the number of disk groups on each host.
Why it's wrong here
Incorrect: Adding disk groups may not address latency.
- ✓
Check the vSAN performance service for object latency breakdown.
Why this is correct
Correct: Performance service provides detailed latency metrics.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume a healthy skyline health check means there is no underlying performance issue, but vSAN skyline health primarily checks for hardware failures and configuration compliance, not performance bottlenecks, so they must use the Performance Service for latency analysis.
Detailed technical explanation
How to think about this question
The vSAN Performance Service collects I/O latency data at multiple layers: VM-level, disk group-level, and physical disk-level, using vCenter's vSAN performance metrics. It can display the average latency, peak latency, and the number of outstanding I/Os, allowing an administrator to isolate whether the bottleneck is at the storage fabric, the disk group, or a specific SSD/HDD. In a real-world scenario, a single failing SSD in a disk group can cause high latency for all VMs on that group, even though the skyline health check reports the disk group as healthy because the drive has not yet failed completely.
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.
TExam Day Tips
- 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this VCP-DCV question test?
vSphere Architecture, Products and Solutions — This question tests vSphere Architecture, Products and Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Check the vSAN performance service for object latency breakdown. — The vSAN Performance Service provides granular, real-time and historical metrics for vSAN objects, including latency breakdowns at the VM, disk group, and physical disk levels. Since the skyline health check shows all disk groups as healthy, the next logical step is to use the Performance Service to pinpoint whether the high latency is due to congestion on a specific object, such as a VM virtual disk or a particular disk group component, rather than a hardware failure.
What should I do if I get this VCP-DCV question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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.
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