VCP-DCV vSphere Performance and Scaling Practice Question
Which TWO actions are valid for optimizing network performance for vSphere clusters configured with Network I/O Control (NIOC)?
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
✓
Allocate network shares to different traffic types based on business priority.
NIOC shares allocate bandwidth proportionally based on business priority. Option E is correct because network resource pools with reservations guarantee minimum bandwidth for critical traffic types. Option B is incorrect because traffic shaping is per-VM and not directly related to NIOC optimization; enabling it on every VM may cause overhead and is not a recommended NIOC practice. Option C is incorrect because disabling NIOC removes the ability to prioritize traffic, which is counterproductive for optimization. Option D is incorrect because host profiles apply settings but are not a direct action for optimizing network performance; the correct action is to configure NIOC parameters themselves.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Allocate network shares to different traffic types based on business priority.
Why this is correct
Shares determine bandwidth proportion during contention.
- ✗
Enable traffic shaping on every virtual machine.
Why it's wrong here
Traffic shaping is a VM-level feature, not NIOC.
- ✗
Disable NIOC on the virtual switch to reduce overhead.
Why it's wrong here
Disabling removes optimization.
- ✗
Use host profiles to apply the same NIOC settings to all hosts in the cluster.
Why it's wrong here
Host profiles apply configuration, but NIOC settings are per-host and not directly related to cluster optimization.
- ✓
Set network resource pools with reservations for critical traffic types.
Why this is correct
Reservations guarantee minimum bandwidth.
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