CISM Certified Information Security Manager – Question0944

Nonrepudiation can BEST be assured by using:

A.
delivery path tracing.
B. reverse lookup translation.
C. out-of-hand channels.
D. digital signatures.

Correct Answer: D

Explanation:

Explanation:
Effective nonrepudiation requires the use of digital signatures. Reverse lookup translation involves converting Internet Protocol (IP) addresses to usernames. Delivery path tracing shows the route taken but does not confirm the identity of the sender. Out-of-band channels are useful when, for confidentiality, it is necessary to break a message into two parts that are sent by different means.