Which of the following is addressed by Kerberos?

A.
Authorization and authentication.

B.
Validation and integrity.

C.
Confidentiality and integrity.

Explanation:
Kerberos is a network authentication protocol. It is designed to provide strong
authentication for client/server applications by using secret-key cryptography. A free
implementation of this protocol is available from the Massachusetts Institute of Technology.
Kerberos is available in many commercial products as well. Kerberos was created by MIT as a
solution to these network security problems. The Kerberos protocol uses strong cryptography so
that a client can prove its identity to a server (and vice versa) across an insecure network
connection. After a client and server has used Kerberos to prove their identity, they can also
encrypt (confidentiality) all of their communications to assure privacy and data integrity as they go
about their business.