Which three configurations should the administrator verify to diagnose the failure?

A system administrator has installed the initial instance of the Standard Connection Server. Connection to the vCenter Server fails during initial configuration.

Which three configurations should the administrator verify to diagnose the failure? (Choose three.)

A.
The ADAM Instance on the Connection Server can connect to the SQL Server database used by vCenter Server.

B.
The username of the vCenter Server user has proper permissions within vCenter Server.

C.
The system hosting vCenter Server has an active network connection.

D.
Both the vCenter Server and Connection server are in the same Active Directory domain.

E.
The FQDN of the vCenter Server can be resolved from the Connection Server.