1. Message means that the sender and the receiver expect privacy. a. confidentiality b. integrity C. authentication d. none of the above 2. Message means that the data must arrive at the receiver exactly as sent. a. confidentiality b. integrity c.authentication d. none of the above 3. Message means that the receiver is ensured that the message is coming from the intended sender, not an imposter. a. confidentiality b. integrity c. authentication d. none of the above I 4. means that a sender must not be able to deny sending a message that he sent. a. Confidentiality b. Integrity c. Authentication d. Nonrepudiation 5. A digital signature provides a. authentication b. nonrepudiation c. neither (a) nor (b) d. both (a) and (b)