Chapter 2 Systems Software

Question 1

What is Systems Software?

Answer 1

It is the interface between the computer software and hardware. It enables the computer to operate hardware and software.

Question 2

What is Application Software?

Answer 2

It enables the computer to do particular tasks.

E.g Word processing a word document.

Question 2

What 3 roles does the OS perform on a computer?

Answer 2

1. Allocate Memory
2. Storage
3. Processing time

Question 2

What is the purpose of the operating System?

Answer 2

It is essential in managing all other programs being used on a computer. It allows hardware and software to communicate with each other.

Question 3

What does Allocate Memory do?

Answer 3

Organises the main memory between programs and data files as they are transferred to and from the hard disc.

Question 4

What does Storage do?

Answer 4

The OS manages storage of data and files on external devices.

E.g Hard drives and USBs.

Question 5

What does Processing Time do?

Answer 5

Allocates processing time between programs that are currently being used by dividing the time a number of slices. Depending on priority of tasks, results in a number of slices being allocated.

Question 6

What is Utility Software?

Answer 6

They carry out a very specific task to assist the operating system.

Question 7

What are the Modes of Processing?

Answer 7

1.Batch Processing
2. Real Time Processing
3. Multi-User System

Question 8

What is Batch Processing?

Answer 8

When groups or ‘batches’ of similar data are collected over a period of time before being processed. This means the computer can input data with no human involvement.

E.g Gas bills produced every 3 months.

Question 9

What is Real Time Processing?

Answer 9

When data is processed immediately after it has been inputted. The output generated is processed quickly enough to influence the next input.

E.g Air traffic control systems.

Question 10

What are Multi-User Systems?

Answer 10

When different computers are sharing the same processor.

The processor divides its processing time ‘into time slices’ and takes turns switching between computers at high speed.

E.g A school

Question 11

What is Utility Software?

Answer 11

They carry out very specific tasks to assist the operating system.

Question 12

Name the 4 Utility Software parts.

Answer 12

1. Disc Defragmentation
2. Anti-Virus Software
3. Back-up and Restore
4. Task Scheduling