Systems Software OCR GCSE Computer Science

How many functions of the operating system are there?

• 2

• 6

• 4

• 8

GUI stands for

How does multitasking work?

• Time slicing - each task is allocated a certain amount of time to execute before the processor focuses on another task

• The processor does everything at once

• Paging - programs are split into fixed-size sections called pages and are allocated space in the RAM when they are opened

• Nobody knows

Why are backups useful?

• To be used in the future

• To let other people know of its existence

• To preserve data

• They can recover data if it has been lost accidentally or deliberately

________ software rearrages fragmented segments of the hard drive to make programs run contiguously.

Which of these are examples of a GUI?

• iOS

• Python

• Windows

• Raspberry Pi

Which of these is an example of compression software?

• Less

• Large

• Compress

• Lossless

What does CLI stand for?

If A becomes G in an encryption software, what would G become?

Answer explanation

G is 6 away from A, so G + 6 = M

What does encryption software do?

• Decrypt cypher-text into text

• Encrypt text into cypher-text

• Both

• Neither