Quiz UNIT 1 DFS40143

Quiz UNIT 1 DFS40143

University

25 Qs

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Quiz UNIT 1 DFS40143

Quiz UNIT 1 DFS40143

Assessment

Quiz

Computers

University

Practice Problem

Hard

Created by

rasyidah arshad

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25 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes encryption?

Changing data into images

Encoding data to prevent unauthorized access

Deleting sensitive information

Compressing data for storage

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Decryption is the process of:

Breaking a password

Translating ciphertext into plaintext

Encrypting plaintext again

Hiding files in folders

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is plaintext in encryption?

Unreadable scrambled data

A file format for text

Original readable message before encryption

A special key used for encoding

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The purpose of encryption is to:

Increase file size

Speed up internet browsing

Protect data from unauthorized access

Save data on the cloud

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a use case for encryption?

Online banking

Social media updates

Secure emails

File transfer over networks

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

DES is what type of encryption algorithm?

Asymmetric

Symmetric

Hashing

One-time pad

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the block size used in DES encryption?

64-bit

128-bit

32-bit

256-bit

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