VCP-VVF Vmware Vsphere Foundation Fundamentals Practice Question
A vSphere Foundation administrator is troubleshooting memory overcommit in a cluster. Several virtual machines are experiencing sluggish performance. Which vSphere memory reclamation technique uses a hypervisor-level driver installed inside the guest operating system to reclaim idle memory?
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
✓
Memory Ballooning
The vSphere Memory Balloon driver (vmmemctl) works collaboratively with the guest OS to reclaim memory from idle VMs when memory pressure occurs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Host Memory Compression
Why it's wrong here
Host memory compression compresses frequently accessed pages before paging them to disk.
- ✗
VMkernel Swap
Why it's wrong here
VMkernel swapping pages guest memory directly out to the storage swap file when all other reclamation methods are insufficient.
- ✓
Memory Ballooning
Why this is correct
Memory ballooning uses the vmmemctl driver inside the guest to allocate memory and force the guest OS to page out inactive memory.
- ✗
Transparent Page Sharing (TPS)
Why it's wrong here
TPS shares identical memory pages across VMs at the hypervisor level without guest agent involvement.
About these practice questions
This VCP-VVF question is part of Courseiva's 517-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official VMware exam blueprint
This VCP-VVF 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-VVF exam.