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MCQ

Q.

A(n) _________ can be used to preserve the integrity of a document or a message.

A

message digest

B

message summary

C

encrypted message

D

none of the above

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MCQ

1.

A digital signature needs a(n)_________ system

A

symmetric-key

B

asymmetric-key

C

either (a) or (b)

D

neither (a) nor (b)

Discussion

MCQ

2.

A(n) ______ is a keyless substitution cipher with N inputs and M outputs that uses a formula to define the relationship between the input stream and the output stream

A

S-box

B

P-box

C

T-box

D

none of the above

Discussion

MCQ

3.

Digital signature cannot provide ________ for the message

A

integrity

B

confidentiality

C

nonrepudiation

D

authentication

Discussion

MCQ

4.

A(n) _____ is a trusted third party that assigns a symmetric key to two parties.

A

KDC

B

CA

C

KDD

D

none of the above

Discussion

MCQ

5.

. ____ provides privacy, integrity, and authentication in e-mail

A

IPSec

B

SSL

C

PGP

D

none of the above

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