Which precautions should be taken before shutting down an NS-series server?

Which precautions should be taken before shutting down an NS-series server? (Select two.)

A.
Perform a DCOM.

B.
Identify current SYSnn.

C.
Capture an SCF Snapshot.

D.
Execute a SETTIME command.

E.
Perform an SCF SAVE CONFIGURATION.