The answer is a burst size that is too small, causing packet loss when burst traffic exceeds the average. In traffic shaping, the burst size defines the maximum amount of data that can be sent at peak speed before the rate is clamped down to the configured average bandwidth. When the burst size is set too low, even a brief spike in traffic—such as a VM sending a rapid series of small packets—immediately exceeds this allowance, forcing the switch to drop packets rather than buffer or smooth the flow. On the VMware Certified Professional Data Center Virtualization VCP-DCV exam, this scenario tests your understanding of how the three shaping parameters (average, peak, and burst) interact; a common trap is assuming a high peak bandwidth alone prevents loss, but without a sufficient burst size to absorb short bursts, drops still occur. Remember the memory tip: "Burst is the bucket—if it's too small, the overflow drops."
VCP-DCV Configure and Manage vSphere Networking Practice Question
This VCP-DCV practice question tests your understanding of configure and manage vsphere networking. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 VM experiences high packet loss during peak hours. The VM is connected to a distributed switch port group with a traffic shaping policy: average bandwidth 100 Mbps, peak bandwidth 200 Mbps, burst size 50 KB. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The burst size is too small, causing packets to be dropped when burst traffic exceeds the average.
Option B is correct because a small burst size causes packets to be dropped when short bursts exceed the average. Option A is less likely since peak is 200 Mbps. Option C would not cause packet loss if disabled. Option D is unlikely if the uplink is faster.
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.
✗
The peak bandwidth limit is being exceeded.
Why it's wrong here
Peak is 200 Mbps; if traffic exceeds that, drops would occur, but burst size is more likely.
✓
The burst size is too small, causing packets to be dropped when burst traffic exceeds the average.
Why this is correct
With 50 KB burst, sustained bursts above average cause drops.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The traffic shaping policy is disabled.
Why it's wrong here
If disabled, no shaping occurs, so no packet loss from shaping.
✗
The physical uplink speed is less than 200 Mbps.
Why it's wrong here
Uplinks are typically 1 Gbps or faster.
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.
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: The burst size is too small, causing packets to be dropped when burst traffic exceeds the average. — Option B is correct because a small burst size causes packets to be dropped when short bursts exceed the average. Option A is less likely since peak is 200 Mbps. Option C would not cause packet loss if disabled. Option D is unlikely if the uplink is faster.
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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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