Correct Answer: A
Explanation/Reference:
Explanation:
Kerberos is a trusted, third party authentication protocol that was developed under Project Athena at MIT.
In Greek mythology, Kerberos is a three-headed dog that guards the entrance to the Underworld. Using symmetric key cryptography, Kerberos authenticates clients to other entities on a network of which a client requires services.
Kerberos addresses the confidentiality and integrity of information. It does not directly address availability and attacks such as frequency analysis.
Incorrect Answers:
B: Kerberos an authentication protocol. However, it does not address availability.
C: Kerberos does address integrity but it does not address validation.
D: Kerberos does address integrity but it does not address auditability.
References:
Krutz, Ronald L. and Russell Dean Vines, The CISSP and CAP Prep Guide: Mastering CISSP and CAP, Wiley Publishing, Indianapolis, 2007, p. 78