Posted by: Pdfprep
Post Date: November 14, 2020
Bob, your senior colleague, has sent you a mail regarding a deal with one of the clients. You are requested to accept the offer and you oblige. After 2 days. Bob denies that he had ever sent a mail.
What do you want to ""know"" to prove yourself that it was Bob who had send a mail?
A . Authentication
B . Confidentiality
C . Integrity
D . Non-Repudiation
Answer: D
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