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MCQ

Q.

______ provides either authentication or encryption, or both, for packets at the IP level.

A

AH

B

ESP

C

PGP

D

SSL

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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

Discussion

MCQ

2.

The DES function has _______ components

A

2

B

3

C

4

D

5

Discussion

MCQ

3.

The ________ criterion ensures that a message cannot easily be forged.

A

one-wayness

B

weak-collision-resistance

C

strong-collision-resistance

D

none of the above

Discussion

MCQ

4.

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

Discussion

MCQ

5.

. To authenticate the data origin, one needs a(n) _______.

A

MDC

B

MAC

C

either (a) or (b)

D

neither (a) nor (b)

Discussion

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