VCP-VVF Troubleshoot And Optimize Practice Question
An administrator is investigating a storage performance issue on an ESXi host using esxtop. In the disk adapter view ('d'), the administrator notices high values in the 'QUET' (Queue Time) or queue delay counter. What does high queue time indicate?
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
✓
Commands are waiting in the ESXi software queue before being dispatched to the HBA or storage device, indicating queue saturation or throttling.
Queue time (QUET) in esxtop indicates the time commands spend waiting in the ESXi host software queue before being dispatched to the storage controller or device, often indicating that the queue depth is fully saturated or throttled.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The host physical CPU cores are overheating and throttling thread execution.
Why it's wrong here
CPU thermal throttling is tracked via hardware sensors, not storage queue time.
- ✗
The vSphere HA heartbeat is failing over the management network.
Why it's wrong here
HA heartbeats use network packets and storage probes, not ESXi storage adapter queues.
- ✓
Commands are waiting in the ESXi software queue before being dispatched to the HBA or storage device, indicating queue saturation or throttling.
Why this is correct
High queue time means the workload is generating more I/O than the current queue depth can process immediately, causing commands to queue up in memory.
- ✗
Transparent Page Sharing (TPS) is locking memory pages.
Why it's wrong here
TPS is a memory management feature, unrelated to storage queue delays.
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.