Which of the following does Kerberos use to authenticate?

A.
Tickets

B.
Servers

C.
Users

D.
Clients

Explanation:
Kerberos keeps a database of its clients and their private keys. The private key is a large number
known only to Kerberos and the client it belongs to. In the case that the client is a user, it is an
encrypted password. Network services requiring authentication register with Kerberos, as do
clients wishing to use those services. The private keys are negotiated at registration.