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which of the following?

The authenticator within Kerberos provides a requested service to the client after validating which of the
following?

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A.
timestamp

B.
client public key

C.
client private key

D.
server public key

Explanation:
In Kerberos implementations where the use of an authenticator is configured, the user sends their identification
information and a timestamp and sequence number encrypted with the shared session key to the requested
service, which then decrypts this information and compares it with the identification data the KDC sent to it
about this requesting user. If the data matches, the user is allowed access to the requested service.
Incorrect Answers:
B: A requested service is provided to the client after validating a user’s identification information and a
timestamp and encrypted sequence number, not a client public key.
C: A requested service is provided to the client after validating a user’s identification information and a
timestamp and encrypted sequence number, not a client private key.
D: A requested service is provided to the client after validating a user’s identification information and a
timestamp and encrypted sequence number, not a server public key.

Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, pp. 209-213


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