The correct choices are using a vSphere Distributed Switch for network scalability and enabling DRS with fully automated mode, because these two actions directly address the performance challenges of scaling a vSphere cluster. DRS in fully automated mode continuously monitors CPU and memory utilization across hosts and migrates VMs with vMotion to balance workloads, preventing any single host from becoming a bottleneck as new ESXi hosts and VMs are added. The VDS provides a centralized, consistent network configuration across all hosts, and its Network I/O Control feature allows you to prioritize traffic types, ensuring that network performance scales linearly with cluster growth. On the VCP-DCV exam, this question tests your understanding of how to maintain performance during horizontal scaling, a common scenario in the “Scale a vSphere Cluster” objective. A frequent trap is confusing HA (which handles availability, not performance) with DRS, or thinking CPU reservations improve scaling—they actually waste resources and reduce flexibility. Memory tip: “DRS moves the load, VDS controls the road.”
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.
A vSphere administrator is scaling a cluster by adding new ESXi hosts and VMs. Which two actions help ensure that performance continues to meet requirements as the environment grows? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable DRS with fully automated mode.
Option C is correct because DRS with fully automated mode automatically balances VM workloads across hosts, preventing resource contention. Option E is correct because a vSphere Distributed Switch (VDS) provides standardized network configuration and allows for network I/O control, which is essential for scaling. Options A, B, and D are incorrect: CPU reservations can waste resources and limit efficiency; HA is for availability, not performance; placing all VMs on the fastest host creates a single point of contention and does not scale.
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.
✗
Place all VMs on the host with the fastest processors.
Why it's wrong here
This approach limits scalability and causes resource contention on that single host.
✓
Enable DRS with fully automated mode.
Why this is correct
DRS automates initial placement and ongoing load balancing, optimizing performance as VMs are added.
Related concept
Read the scenario before looking for a memorised answer.
✓
Use a vSphere Distributed Switch for network scalability.
Why this is correct
A VDS simplifies network management and supports features like NIOC, which are critical for scaling network performance.
Related concept
Read the scenario before looking for a memorised answer.
✗
Configure vSphere HA on the cluster.
Why it's wrong here
HA provides high availability, not performance scaling.
✗
Set CPU reservations on all VMs.
Why it's wrong here
Reservations guarantee resources but can lead to waste and are not a best practice for general scaling.
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: Enable DRS with fully automated mode. — Option C is correct because DRS with fully automated mode automatically balances VM workloads across hosts, preventing resource contention. Option E is correct because a vSphere Distributed Switch (VDS) provides standardized network configuration and allows for network I/O control, which is essential for scaling. Options A, B, and D are incorrect: CPU reservations can waste resources and limit efficiency; HA is for availability, not performance; placing all VMs on the fastest host creates a single point of contention and does not scale.
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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