41. OCR GCSE (J277) 1.5 Utility system software

What is the purpose of encryption in utility system software?

• To enhance the graphical interface

• To scramble plain text into cipher text

• To increase the storage capacity

• To speed up the computer

Which type of cipher is mentioned as a simple form of encryption?

• Vigenère cipher

• Caesar cipher

• RSA encryption

• Enigma cipher

Why should solid-state drives not be defragmented?

• They do not have any fragments

• It decreases their storage capacity

• It's unnecessary and reduces their lifespan

• It increases their lifespan

What is the main benefit of defragmentation?

• It speeds up access to files

• It increases internet speed

• It reduces file size

• It encrypts file data

What happens to files on a disk after defragmentation?

• They are encrypted

• They are duplicated for backup

• They are compressed

• They are arranged continuously

What is the primary purpose of compression utilities?

• To reduce file size

• To increase file size

• To encrypt files

• To defragment the disk

What is a characteristic of lossy compression?

• It retains all original data

• It increases file quality

• It loses some data to reduce file size

• It encrypts the file

Which file format is an example of lossy compression?

• PDF

• ZIP

• JPEG

• TXT

How does a ZIP file represent data?

• By converting it into plain text

• By duplicating it

• By encrypting it

• By using binary to retain original data in a compressed format

What is an example of how data can be simplified for compression?

• Storing every single bit

• Storing the number of repeated bits

• Increasing the number of bits

• Encrypting each bit