VCP-DCV Configure and Manage vSphere Networking Practice Question
An administrator needs to implement Network I/O Control (NIOC) on a vSphere Distributed Switch to guarantee bandwidth for vSphere Replication traffic. Which two actions are required?
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
✓
Enable NIOC on the distributed switch.
Options A and B are the two actions required to implement NIOC for vSphere Replication. NIOC must first be enabled on the distributed switch (A), then a network resource pool must be created for the replication traffic (B). Option C is incorrect because traffic shaping is a separate rate-limiting mechanism and is not used with NIOC; NIOC relies on resource pools for guaranteed bandwidth. Option D is incorrect because a separate VLAN provides network segmentation but does not guarantee bandwidth; NIOC is needed for that. Option E is incorrect because assigning the VMkernel adapter to the resource pool is a subsequent step that is necessary but not one of the two primary actions asked for in the question.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Enable NIOC on the distributed switch.
Why this is correct
NIOC must be enabled globally on the DVS.
- ✓
Create a network resource pool for vSphere Replication.
Why this is correct
A resource pool must exist to assign the traffic to.
- ✗
Set the replication VMkernel adapter's traffic shaping to guaranteed.
Why it's wrong here
Traffic shaping is separate from NIOC resource pools.
- ✗
Configure the replication network on a separate VLAN.
Why it's wrong here
VLAN is unrelated to NIOC bandwidth guarantees.
- ✗
Assign the vSphere Replication VMkernel adapter to the resource pool.
Why it's wrong here
This is required but not one of the two initial actions asked.
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Same concept, more angles
1 more way this is tested on VCP-DCV
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A vSphere administrator is deploying a vSphere Distributed Switch (vDS) version 7.0. The environment has ESXi hosts with hardware version 7.0. The administrator needs to ensure that the vDS supports Network I/O Control version 3 (NIOCv3). What must be true for NIOCv3 to function correctly?
hard- ✓ A.All hosts must be running ESXi 7.0 or later.
- B.The vDS must be configured with Route based on IP hash teaming.
- C.All hosts must have the vDS in Link Aggregation Control Protocol (LACP) mode.
- D.The vDS must have a Network Resource Pool configured.
Why A: NIOCv3 is a feature introduced with vSphere 7.0 that provides granular bandwidth allocation and reservation for network traffic. For NIOCv3 to function correctly, all ESXi hosts attached to the vDS must be running ESXi 7.0 or later because the feature relies on kernel-level enhancements and the vSphere Network Resource Management (vNRM) agent that are only present in that version. Hosts on earlier versions lack the necessary drivers and scheduling capabilities, causing NIOCv3 to be unavailable or non-functional.
JA
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.