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.