350-601 Compute Practice Question
A HyperFlex cluster requires a cluster witness VM for quorum. The cluster is deployed with 5 nodes using RF2. If one node fails, the cluster remains operational. However, if a second node fails simultaneously, what determines whether the cluster remains available?
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
✓
The witness VM provides the extra vote to maintain quorum.
The witness VM provides a tie-breaking vote. With RF2, if two nodes fail, the cluster can still maintain quorum if the witness is available. The witness is critical for clusters with even number of nodes or after failures.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The cluster automatically reverts to RF1 to stay operational.
Why it's wrong here
No automatic change; quorum is determined by votes.
- ✗
The remaining data copies (2 per chunk) ensure no data loss.
Why it's wrong here
Data copies are for redundancy, but quorum is a voting mechanism.
- ✓
The witness VM provides the extra vote to maintain quorum.
Why this is correct
The witness VM is essential for quorum when multiple nodes fail.
- ✗
The replication factor (RF2) alone ensures availability.
Why it's wrong here
RF2 alone cannot guarantee quorum with two failures.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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