Which statement about CMM roles in a chassis is true?

• A. One CMM is designated as Primary and the other as Secondary
• B. They alternate roles every reboot
• C. The higher-id CMM becomes Primary automatically
• D. Roles are assigned by user command input on startup

Answer: (A)

In a chassis with two CMMs, management is designed to be highly available by designating one as Primary and the other as Secondary. The Primary CMM is the active management point, handling all monitoring, configuration, and access to the chassis. The Secondary CMM stays in a ready state, mirroring critical information and ready to assume control if the Primary becomes unavailable. This arrangement provides continuous management even in case of hardware or link failures, which is why this statement is true. The other options imply role changes that aren’t how the standard CMM redundancy is set up (roles aren’t swapped at every reboot, aren’t automatically determined by a higher identifier, and aren’t typically chosen by a manual startup command in normal operation).