VCP-VVF IT Architectures Technologies Standards Practice Question
An enterprise is designing a multi-site vSphere Foundation 9.0 architecture leveraging stretched clustering. What is the maximum supported Round Trip Time (RTT) network latency for synchronous vSAN storage replication between primary and secondary data centers?
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
✓
5 milliseconds or less
VMware vSAN stretched cluster deployments require a maximum RTT of 5 milliseconds or less between the data centers and the witness site requirements depend on deployment type.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
500 milliseconds or less
Why it's wrong here
500ms exceeds acceptable limits for any real-time clustering heartbeats.
- ✗
100 milliseconds or less
Why it's wrong here
100ms is typical for long-distance asynchronous replication, not stretched vSAN clusters.
- ✓
5 milliseconds or less
Why this is correct
Correct. Synchronous vSAN replication requires strict low-latency links capped at 5ms RTT.
- ✗
25 milliseconds or less
Why it's wrong here
25ms is far too high for synchronous vSAN writes and will lead to heartbeat timeouts and I/O stalls.
About these practice questions
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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.