VCP-DCV vSphere Architecture, Products and Solutions Practice Question
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?
⚠ Common exam trap
Watch out — candidates often 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.
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.
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.
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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.