What is the purpose of cluster quorum in failover clustering?

• A. To provide a high-availability of services and ensure consistent cluster membership decisions during failures.
• B. To balance network traffic across cluster resources.
• C. To configure storage encryption for cluster disks.
• D. To manage virtual machine migrations.

Answer: (A)

Quorum in failover clustering determines whether the cluster has enough voting members to continue operating. This lets the cluster stay highly available by continuing to serve resources as long as a majority of members can communicate, while also preventing split-brain when parts of the cluster are partitioned or some nodes fail. If a partition prevents a majority from forming, the cluster will stop resources on the isolated side to protect data integrity.

Other described tasks like balancing network traffic, configuring storage encryption, or managing virtual machine migrations aren’t the purpose of quorum; they are handled by other cluster features and mechanisms.