ISC2 Exam ISSMP Topic 5 Question 1 Discussion

Non-repudiation is a mechanism which proves that the sender really sent a message. It provides an evidence of the identity of the senderand message integrity. It also prevents a person from denying the submission or delivery of the message and the integrity of its contents.

Answer option C is incorrect. Authentication is a process of verifying the identity of a person or network host.

Answer option B is incorrect. Confidentiality ensures that no one can read a message except the intended receiver.

Answer option D is incorrect. Integrity assures the receiver that the received message has not been altered in any way from the original.