VCP-DCV vSphere Performance and Scaling Practice Question
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.)
⚠ Common exam trap
Watch out — candidates often confuse vSphere HA (high availability) with performance scaling, but HA only reacts to failures and does not balance load or optimize resource usage as the environment grows.
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
✓
Enable DRS with fully automated mode.
DRS with fully automated mode continuously monitors resource utilization across the cluster and automatically migrates VMs to balance CPU and memory loads. This ensures that as new hosts and VMs are added, workloads are redistributed to prevent hotspots and maintain performance requirements.
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.
- ✓
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.
- ✗
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.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.