Cryptography and Network Security - Unit 1

Cryptography and Network Security - Unit 1

University

15 Qs

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Cryptography and Network Security - Unit 1

Cryptography and Network Security - Unit 1

Assessment

Quiz

Engineering

University

Practice Problem

Medium

Created by

Saranya Susi

Used 2+ times

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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a security service as per OSI Security Architecture?


a) Data Confidentiality

b) Authentication

c) Integrity

d) Protocol Control

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the OSI security architecture primarily define?

a) Physical Layer Security

b) Security services and mechanisms

c) Encryption algorithms only

d) Data transmission methods

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of cipher replaces one character with another?

a) Transposition cipher

b) Substitution cipher

c) Stream cipher

d) Block cipher

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In classical encryption, the Caesar Cipher shifts characters by how many places by default?

a) 2

b) 3

c) 4

d) 5

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary principle of confusion in encryption?

a) Ensuring that ciphertext and plaintext have no correlation

b) Rearranging plaintext to create ciphertext

c) Splitting data into blocks

d) Hiding the encryption algorithm

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which technique involves rearranging plaintext characters to form ciphertext?

a) Substitution


b) Transposition

c) Permutation

d) Key Scheduling

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The Data Encryption Standard (DES) uses a Sub key size of how many bits?

a) 56

b) 64

c) 128

d) 192

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