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An administrator needs to verify HA functionality after configuring BCM (Bright Cluster Manager). Which command confirms the active head node and failover readiness?
Correct Answer: A
NVIDIA Base Command Manager (powered by Bright) relies on a High Availability (HA) pair of head nodes to ensure the AI factory remains operational if the primary controller fails. The cmsh (Bright Shell) is the definitive management interface for this stack. Running the status command within cmsh provides a real-time summary of the cluster's health, specifically identifying which head node currently holds the "Active" role and which is in "Standby." It also monitors the status of the heartbeat and the synchronization of the database (MariaDB/MySQL). While nvsm (Option B) is essential for DGX hardware health, it does not manage the logic of the Bright Cluster Manager software. Checking connectivity via ping (Option D) only confirms network reachability but does not verify that the management services (CMDaemon) are actually ready to perform a stateful failover. Thus, cmsh status is the only verified way to confirm that the control plane's redundancy logic is active.
