VCP-VVF Troubleshoot And Optimize Practice Question
An administrator is troubleshooting a storage performance issue on an ESXi 9.0 host where multiple virtual machines are experiencing high I/O latency. Which THREE actions can the administrator take to analyze and mitigate the latency? (Choose three.)
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
✓
Use esxtop ('d' view) to separate Kernel Latency (KAVG) from Device Latency (DAVG) to determine whether the bottleneck is internal to ESXi or on the storage array.
Analyzing and mitigating storage latency involves checking esxtop storage metrics (DAVG/KAVG), reviewing multipathing policies (Path Selection Policy), checking storage array health and queue depths, and evaluating SIOC settings.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Disable all host CPU power management states to accelerate storage driver interrupt handling.
Why it's wrong here
CPU power states affect CPU frequency scaling, not storage driver queue behavior directly.
- ✗
Format the ESXi boot bank with VMFS-6 to clear storage queue buffers.
Why it's wrong here
Boot banks hold ESXi hypervisor images, not VMFS datastores, and formatting them destroys the host installation.
- ✓
Use esxtop ('d' view) to separate Kernel Latency (KAVG) from Device Latency (DAVG) to determine whether the bottleneck is internal to ESXi or on the storage array.
Why this is correct
Isolating KAVG vs DAVG pinpoints the exact layer causing the delay.
- ✓
Verify multipathing policies (e.g., Round Robin) and ensure all physical paths to the storage array are active and healthy.
Why this is correct
Failed paths or improper Path Selection Policies can overload single paths and spike latency.
- ✓
Enable or configure Storage I/O Control (SIOC) to prevent single noisy virtual machines from saturating datastore queue depths.
Why this is correct
SIOC protects critical workloads by throttling heavy I/O consumers during congestion.
About these practice questions
This VCP-VVF question is part of Courseiva's 517-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 and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official VMware exam blueprint
This VCP-VVF 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-VVF exam.