(Cyber Security) (T or F) Choose the Correct multiple choice Answer for 15 & 16

1 pts Question 15 Alices uses a Digital Signature (DS) to communicate with Bob. Bob claims he received a message x "Transfer $1000 to Mark" in clear and with a valid auth(x) from Alice, but Alice claims she never sent the message. The auth(x) proves that Alice must have created the message. True False 1 pts Question 16 Alices uses a Message Authentication Code (MAC) to communicate with Bob. Alice send's a message x "Transfer $1000 to Mark" in clear and also send auth(x). Eve intercepts the message and replays the message two months later. Bob will detect the message replay. True O False