Nonrepudiation is best described as what?
A.
Proving a user performed a transaction
B.
Proving a transaction did not change
C.
Authenticating a transaction
D.
Proving a user performed a transaction that did not change
Explanation:
Answer D is correct; nonrepudiation is proof that a user performed a transaction and proof that it did not change.Incorrect Answers and Explanations: A, B, and C: Answers A, B, and C are incorrect. Proving a transaction did not change is one half of nonrepudiation; proving a transaction did not change is the other half. Nonrepudiation requires both. Authenticating a transaction is another way of saying a user performed the transaction, and is also one half of nonrepudiation.
Please update: Answer does not properly define the second have for reasoning; part one is repeated – “Proving a transaction did not change is one half of nonrepudiation; proving a transaction did not change is the other half.”