Cryptography and Network Security Quiz1

Cryptography and Network Security Quiz1

University

15 Qs

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Cryptography and Network Security Quiz1

Cryptography and Network Security Quiz1

Assessment

Quiz

Computers

University

Practice Problem

Medium

Created by

azooz_dhamri azooz_dhamri

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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the fundamental building blocks of encryption used in DES?

Multiplication and rotation

Addition and division

Substitution and permutation

Exponentiation and reflection

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the encryption technique that uses two instances of DES on the same plaintext?

Single-DES

Triple-DES

Double-DES

Quadruple-DES

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which encryption technique uses three instances of DES on the same plaintext?

Quintuple-DES

Triple-DES

Double-DES

Single-DES

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which concept does the Feistel cipher implement?

ElGamal encryption

RSA encryption

Shannon’s S-P network

Diffie-Hellman key exchange

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the requirement for the generation of a sequence of random numbers to be considered statistically random?

Non-randomness

Predictability

Dependent subsequence

Uniform distribution

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which stream cipher encrypts plaintext one byte at a time?

AES

RC4

Blowfish

DES

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Who designed the RC4 stream cipher in 1987?

Ron Rivest

Adi Shamir

Leonard Adleman

Whitfield Diffie

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