Systems Security Certified Practitioner – SSCP – Question0955 - Systems Security Certified Practitioner

Which of the following standards is concerned with message handling?

A. X.400
B. X.500
C. X.509
D. X.800

Correct Answer: A

Explanation:

X.400 is used in e-mail as a message handling protocol. X.500 is used in directory services. X.509 is used in digital certificates and X.800 is used a network security standard. Reference: http://www.alvestrand.no/x400/.