Question 67 of 144
SK0-005 security-disaster-recovery Practice Question
A company uses a two-node failover cluster for a critical application. The cluster nodes are located in the same data center, and the quorum configuration uses a file share witness on a separate server in the same data center. During a major power outage, both cluster nodes and the file share witness server lose power. What is the impact on cluster availability?
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 cluster will be offline until one of the nodes or the witness comes back online.
In a two-node cluster with a file share witness, if both nodes and the witness are unavailable, the cluster cannot achieve quorum and will be offline. This is because the cluster requires a majority of votes to stay online. With only two nodes, the witness is needed to break ties. Without any votes, the cluster fails.
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 will automatically fail over to a third site because the witness server is unavailable.
Why it's wrong here
There is no third site; the witness is only a file share, not a failover target.
- ✗
The cluster continues operating because the nodes can use a dynamic quorum and adjust the vote count.
Why it's wrong here
Dynamic quorum can adjust votes, but if all nodes and the witness are down, there are no votes to adjust.
- ✓
The cluster will be offline until one of the nodes or the witness comes back online.
Why this is correct
With all three voting members down, there are zero votes, below the quorum majority. The cluster will not start until at least two members are available (e.g., both nodes, or one node and the witness).
- ✗
The cluster remains online because the nodes can communicate directly and form quorum without the witness.
Why it's wrong here
A two-node cluster without a witness cannot achieve quorum if one node fails; if both nodes are down, neither can vote.
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Last reviewed: Jul 26, 2026
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