An administrator’s Unity system is configured with both a Fibre Channel CNA and a Fibre Channel I/O module.
Which Fibre Channel port on each SP must be used for native synchronous replication?

A.
CNA FC port 5

B.
I/O module FC port 2

C.
CNA FC port 4

D.
I/O module FC port 5

Explanation:
Only one FC port can be configured and used for synchronous replication. Once an FC port is assigned, it will
continue to act as the synchronous replication port and can never be changed. To determine the FC port used
for synchronous replication, in the CLI console, run the command /remote/sys show -detail. Port information,
similar to the following example, will appear in the output:
Synchronous FC ports = spb_fc4, spa_fc4
https://www.emc.com/en-us/documentation/unity-family/unity-p-replication-config/03-unity-rep-brconsiderations-syncrep.htm