VCP-DCV Configure and Manage vSphere Storage Practice Question
Exhibit
# esxcli storage nfs41 list Volume Name Host Share Accessible Mounted ----------- ----------- -------------- ---------- ------- nfs-ds nas01.local /exports/nfs01 true true # esxcli storage nfs41 param set -v nfs-ds -p MaxQueueDepth -v 64 # esxcli storage nfs41 param list -v nfs-ds Parameter Value ------------------- ----- MaxQueueDepth 64 MaxReadTransferSize 131072 MaxWriteTransferSize 131072 ...
Refer to the exhibit. An administrator increased the MaxQueueDepth parameter for an NFS 4.1 datastore. Which effect does this change have on performance?
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
✓
It increases throughput by allowing more concurrent I/O operations.
Increasing MaxQueueDepth allows more concurrent I/Os to be queued to the NFS server, which can improve throughput for workloads with high I/O concurrency but may increase latency if the NFS server is not capable of handling the increased queue depth.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It reduces latency by limiting the number of queued I/Os.
Why it's wrong here
Increasing MaxQueueDepth increases the queue depth, which typically does not reduce latency.
- ✗
It limits the maximum size of read and write operations.
Why it's wrong here
Read/Write transfer sizes are separate parameters.
- ✓
It increases throughput by allowing more concurrent I/O operations.
Why this is correct
A higher queue depth allows more I/Os to be processed in parallel, improving throughput.
- ✗
It has no effect because NFS 4.1 does not support queue depth adjustments.
Why it's wrong here
NFS 4.1 supports queue depth tuning via esxcli.
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