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MCQ

Q.

The _______ cipher is the simplest monoalphabetic cipher. It uses modular arithmetic with a modulus of 26.

A

transposition

B

additive

C

shift

D

none of the above

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MCQ

1.

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

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2.

An _________ is a network that allows authorized access from outside users

A

intranet

B

internet

C

extranet

D

none of the above

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3.

If _________ is needed, a cryptosystem must be applied over the scheme

A

integrity

B

confidentiality

C

nonrepudiation

D

authentication

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4.

In _______, a claimant proves her identity to the verifier by using one of the three kinds of witnesses

A

message authentication

B

entity authentication

C

message confidentiality

D

message integrity

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5.

One commonly used public-key cryptography method is the ______ algorithm

A

RSS

B

RAS

C

RSA

D

RAA

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