The correct answer is swapped memory and ballooning, as these two metrics from esxtop or vCenter performance charts reliably indicate that a VM is actively reclaiming memory due to contention. Ballooning occurs when the VMkernel’s balloon driver inflates inside the guest OS to reclaim idle pages, while swapping happens when the hypervisor is forced to write memory pages to disk because ballooning alone cannot free enough memory—both are direct signs of memory pressure. On the VMware Certified Professional Data Center Virtualization VCP-DCV exam, this question tests your ability to distinguish true pressure indicators from misleading metrics like active memory or consumed memory, which do not reflect contention. A common trap is confusing consumed memory (which includes overhead) with pressure; remember that overhead is hypervisor cost, not a sign of stress. Memory tip: “Balloon and swap mean you’re about to drop—active and consumed are just the shop.”
VCP-DCV vSphere Performance and Scaling Practice Question
This VCP-DCV practice question tests your understanding of vsphere performance and scaling. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
An administrator is analyzing performance data for a vSphere cluster and wants to identify VMs that are experiencing memory pressure. Which two metrics from esxtop or vCenter performance charts reliably indicate that a VM is actively reclaiming memory due to contention? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Ballooned memory
Memory ballooning and swapping are clear indicators of memory pressure. Ballooning occurs when the VMkernel reclaims memory from a VM via the balloon driver, and swapping occurs when the hypervisor is forced to swap pages to disk. Active memory is the currently used memory, not a sign of pressure. Consumed memory includes overhead and target memory. Overhead memory is the hypervisor overhead, not a pressure metric.
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.
✗
Consumed memory
Why it's wrong here
Consumed memory includes target memory and overhead; not a direct pressure indicator.
✗
Active memory
Why it's wrong here
Active memory is the amount of memory currently in use by the VM; it does not indicate pressure.
✓
Ballooned memory
Why this is correct
Ballooned memory shows the amount of memory reclaimed via the balloon driver, a sign of memory pressure.
Related concept
Read the scenario before looking for a memorised answer.
✓
Swapped memory
Why this is correct
High swapped memory indicates the hypervisor is swapping pages to disk due to memory overcommitment.
Related concept
Read the scenario before looking for a memorised answer.
✗
Overhead memory
Why it's wrong here
Overhead memory is the hypervisor's own memory usage and not related to VM memory pressure.
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.
vSphere Performance and Scaling — This question tests vSphere Performance and Scaling — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Ballooned memory — Memory ballooning and swapping are clear indicators of memory pressure. Ballooning occurs when the VMkernel reclaims memory from a VM via the balloon driver, and swapping occurs when the hypervisor is forced to swap pages to disk. Active memory is the currently used memory, not a sign of pressure. Consumed memory includes overhead and target memory. Overhead memory is the hypervisor overhead, not a pressure metric.
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.
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Question Discussion
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