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CNS-2nd QUIZ

Authored by Sudhir Pattanaik

Professional Development

University

Used 64+ times

CNS-2nd QUIZ
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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

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

S-box

P-box

T-box

none of the mentioned

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A(n) _____________ is a keyless substitution cipher with N inputs and M outputs that uses a table to define the relationship between the input

S-box

P-box

T-box

None of the ementioned

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A modern cipher is usually a complex _____ cipher made of a combination of different simple ciphers.

round

circle

square

None of the mentioned

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

DES is a(n) _______ method adopted by the US government.

symmetric-key

asymmetric-key

Nither symmetric-key nor asymmetric-key

Both symmetric-key and asymmetric-key

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

DES has an initial and final permutation block and _____ rounds.

14

15

16

None of the mentioned

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The DES function has _____ components

2

3

4

5

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

DES uses a key generator to generate sixteen _____ round keys.

32-bit

48-bit

54-bit

42-bit

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