Study the exhibit carefully.
What is the purpose of the A Loop cable in this diagram?

Exhibit:

A.
Constantly check the functionality of the two appliances?heartbeats.

B.
Mirror each other’s NVRAM.

C.
Assume each appliance’s network identity in the event of a takeover.

D.
Allow Filer1 to synchronously write to the remote plex of one or more of its mirrored volumes.