- A
Set a low bandwidth limit for the NFS traffic class.
Why wrong: Limiting NFS traffic would cap its performance, which is the opposite of the desired outcome.
- B
Increase the shares for the NFS traffic class.
Increasing shares gives NFS higher relative weight during contention, ensuring it gets more bandwidth without hard limits, thus reducing latency while allowing other traffic to still use remaining bandwidth.
- C
Set a high bandwidth reservation for the NFS traffic class.
Why wrong: Reservation guarantees minimum bandwidth but doesn't help with peak contention; it could also starve other traffic if NFS continuously uses reserved bandwidth.
- D
Disable Network I/O Control on the vDS.
Why wrong: Disabling NIOC removes all prioritization, causing all traffic types to compete equally, likely worsening NFS latency.
VCP-DCV Configure and Manage vSphere Networking Practice Question
This VCP-DCV practice question tests your understanding of configure and manage vsphere networking. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A vSphere environment uses a vSphere Distributed Switch (vDS) with 10G uplinks and Network I/O Control (NIOC) enabled. Administrators report that during peak traffic, NFS storage traffic is experiencing high latency, while other traffic types remain unaffected. The vDS has default NIOC shares and limits. Which action should be taken to prioritize NFS traffic without completely starving other traffic?
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
Increase the shares for the NFS traffic class.
Option D is correct because increasing the shares for the NFS system traffic class gives it a higher proportion of bandwidth during contention, without imposing a hard limit. Option A is incorrect because setting a high limit for NFS could starve other traffic if NFS uses all bandwidth. Option B is incorrect because setting a low limit for NFS would cap NFS traffic, worsening performance. Option C is incorrect because disabling NIOC removes all prioritization, making all traffic equal and not solving the issue.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Set a low bandwidth limit for the NFS traffic class.
Why it's wrong here
Limiting NFS traffic would cap its performance, which is the opposite of the desired outcome.
- ✓
Increase the shares for the NFS traffic class.
Why this is correct
Increasing shares gives NFS higher relative weight during contention, ensuring it gets more bandwidth without hard limits, thus reducing latency while allowing other traffic to still use remaining bandwidth.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Set a high bandwidth reservation for the NFS traffic class.
Why it's wrong here
Reservation guarantees minimum bandwidth but doesn't help with peak contention; it could also starve other traffic if NFS continuously uses reserved bandwidth.
- ✗
Disable Network I/O Control on the vDS.
Why it's wrong here
Disabling NIOC removes all prioritization, causing all traffic types to compete equally, likely worsening NFS latency.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the VCP-DCV exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which VCP-DCV exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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Configure and Manage vSphere Networking — study guide chapter
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FAQ
Questions learners often ask
What does this VCP-DCV question test?
Configure and Manage vSphere Networking — This question tests Configure and Manage vSphere Networking — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Increase the shares for the NFS traffic class. — Option D is correct because increasing the shares for the NFS system traffic class gives it a higher proportion of bandwidth during contention, without imposing a hard limit. Option A is incorrect because setting a high limit for NFS could starve other traffic if NFS uses all bandwidth. Option B is incorrect because setting a low limit for NFS would cap NFS traffic, worsening performance. Option C is incorrect because disabling NIOC removes all prioritization, making all traffic equal and not solving the issue.
What should I do if I get this VCP-DCV question wrong?
Identify which VCP-DCV exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 24, 2026
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.
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