In a Kerberos exchange involving a message with an authenticator, the
authenticator contains the client ID and which of the following?

A.
Client network address

B.
Ticket Granting Ticket (TGT)

C.
Timestamp

D.
Client/TGS session key

Explanation:
A timestamp, t, is used to check the validity of the accompanying
request since a Kerberos ticket is valid for some time window, v, after it
is issued. The timestamp indicates when the ticket was issued.
* The TGT, is comprised of the client ID, the client network address, the
starting and ending time the ticket is valid (v), and the client/TGS session
key. This ticket is used by the client to request the service of a
resource on the network from the TGS.
* The client/TGS session key, Kc, tgs, is the symmetric key used for encrypted communication
between the client and TGS for this particular session.
* the client network address is included in the TGT and not in the authenticator.