The Administration Server of a domain falls due to a hardware failure. The hardware is
beyond repair. Before the failure you prepared a “backup admin server”. You go through
your planned recovery process and are successful. The Administration Server is now
running on different hardware. The managed servers of the domain automatically reconnect
to the admin server. Select the two statements that are true.
A.
Files of deployed applications are available to the backup admin server from the
same relative location as they were to the original admin server.
B.
At the time of the failure ,the backup admin server was running in “Standby” mode
on different hardware in the same network.
C.
When the admin server failed, you must have shut down and restarted the
managed servers, otherwise they could not have reconnected to the failed admin
server.
D.
The backup admin server is any one of the running managed servers. You select
one of the managed servers, stop it, set its “administration” flag, and restart it as the
admin server of the domain.
E.
The backup admin server must be running at the same DNS name or IP address as
the original.
I think A and E
http://docs.oracle.com/cd/E25054_01/web.1111/e13708/failures.htm