- A
Enhanced vMotion Compatibility (EVC) mode.
EVC ensures that all hosts present the same CPU feature set to VMs, preventing performance drops after migration.
- B
Resource pool shares configuration.
Why wrong: Shares are not part of vMotion compatibility checks.
- C
Distributed Power Management (DPM) threshold.
Why wrong: DPM affects power management, not vMotion performance consistency.
- D
NUMA node alignment for each VM.
Why wrong: NUMA alignment is important for performance but is not a vMotion requirement.
Question 241 of 521
VCP-DCV vSphere Performance and Scaling Practice Question
This VCP-DCV practice question tests your understanding of vsphere performance and scaling. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
Which setting must be consistent across all hosts in a vMotion migration to ensure that virtual machines maintain optimal performance after migration?
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
✓
Enhanced vMotion Compatibility (EVC) mode.
Option A is correct because Enhanced vMotion Compatibility (EVC) ensures that the CPU features presented to virtual machines are consistent across all hosts in a cluster, preventing performance degradation due to CPU feature masking during vMotion. Option B is incorrect because resource pool shares control resource allocation but do not affect vMotion compatibility or post-migration performance. Option C is incorrect because Distributed Power Management (DPM) manages host power states and does not directly impact vMotion performance. Option D is incorrect because NUMA node alignment is important for memory locality performance but is not a prerequisite for vMotion; it can be configured after migration.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Enhanced vMotion Compatibility (EVC) mode.
Why this is correct
EVC ensures that all hosts present the same CPU feature set to VMs, preventing performance drops after migration.
Related concept
CIDR notation defines the prefix length.
- ✗
Resource pool shares configuration.
Why it's wrong here
Shares are not part of vMotion compatibility checks.
- ✗
Distributed Power Management (DPM) threshold.
Why it's wrong here
DPM affects power management, not vMotion performance consistency.
- ✗
NUMA node alignment for each VM.
Why it's wrong here
NUMA alignment is important for performance but is not a vMotion requirement.
Common exam traps
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
- CIDR notation defines the prefix length.
- Block size helps identify subnet boundaries.
- Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
- The required host count determines the smallest suitable subnet.
TExam Day Tips
- Write the block size before choosing the subnet.
- Check whether the question asks for hosts, subnets or a specific address range.
- Do not confuse /24, /25, /26 and /27 host counts.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Real-world example
How this comes up in practice
A network engineer segments a warehouse floor into three subnets: 20 scanners, 5 printers, and 2 management hosts. Picking the wrong mask wastes addresses or leaves too few usable hosts. Exam questions test whether you can apply CIDR notation, calculate block size, and identify the correct usable-host range for a given prefix.
What to study next
Got this wrong? Here's your next step.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related VCP-DCV subnetting questions on CIDR, address ranges, and subnet selection.
- →
vSphere Performance and Scaling — study guide chapter
Learn the concepts, then practise the questions
- →
vSphere Performance and Scaling practice questions
Targeted practice on this topic area only
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FAQ
Questions learners often ask
What does this VCP-DCV question test?
vSphere Performance and Scaling — This question tests vSphere Performance and Scaling — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Enhanced vMotion Compatibility (EVC) mode. — Option A is correct because Enhanced vMotion Compatibility (EVC) ensures that the CPU features presented to virtual machines are consistent across all hosts in a cluster, preventing performance degradation due to CPU feature masking during vMotion. Option B is incorrect because resource pool shares control resource allocation but do not affect vMotion compatibility or post-migration performance. Option C is incorrect because Distributed Power Management (DPM) manages host power states and does not directly impact vMotion performance. Option D is incorrect because NUMA node alignment is important for memory locality performance but is not a prerequisite for vMotion; it can be configured after migration.
What should I do if I get this VCP-DCV question wrong?
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related VCP-DCV subnetting questions on CIDR, address ranges, and subnet selection.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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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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