In a cryptographic key distribution system, the master key is used to exchange?

A.
Session keys

B.
Public keys

C.
Secret keys

D.
Private keys

Explanation:
“The Key Distribution Center (KDC) is the most import component within a Kerberos environment.
The KDC holds all users’ and services’ cryptographic keys. It provides authentication services, as well
as key distribution functionality. The clients and services trust the integrity of the KDC, and this trust
is the foundation of Kerberos security.” Pg. 148 Shon Harris CISSP All-In-One Certification Exam
Guide ‘The basic principles of Kerberos operation are as follows: 1.)The KDC knows the secret keys of
all clients and servers on the network. 2.)The KDC initially exchanges information with the client and
server by using these secret keys. 3.)Kerberos authenticates a client to a requested service on a

server through TGS, and by using temporary symmetric session keys for communications between
the client and KDC, the server and the KDC, and the client and server. 4.)Communication then takes
place between the client and the server using those temporary session keys.” Pg. 40 Krutz: The CISSP
Prep Guide