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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(n)______ creates a secret key only between a member and the center.

A

CA

B

KDC

C

KDD

D

none of the above

Discussion

MCQ

2.

_________ ciphers can be categorized into two broad categories: monoalphabetic and polyalphabetic.

A

Substitution

B

Transposition

C

either (a) or (b)

D

neither (a) nor (b)

Discussion

MCQ

3.

The ________ cipher reorders the plaintext characters to create a ciphertext.

A

substitution

B

transposition

C

either (a) or (b)

D

neither (a) nor (b)

Discussion

MCQ

4.

The ________ is the message after transformation

A

ciphertext

B

plaintext

C

secret-text

D

none of the above

Discussion

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5.

_______ means to prove the identity of the entity that tries to access the system's resources.

A

Message authentication

B

Entity authentication

C

Message confidentiality

D

none of the above

Discussion

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