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which proves that the sender really sent a particular message?

Which of the following terms refers to a mechanism which proves that the sender really sent a
particular message?

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A.
Integrity

B.
Confidentiality

C.
Authentication

D.
Non-repudiation

Explanation:
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 A is incorrect. Integrity assures the receiver that the received message has not been
altered in any way from the original.


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