Computer Software

Question 1

Role of operating system

Answer 1

software that manages computer hardware and software

• Controls peripherals
• controls file management
• Controls sercurity
• provides a user interface so it is easy to interact with the computer
• Manages System resources
• Manages back up

Question 2

Role of a User Interface

Answer 2

the method by which the user and the computer exchange information and instructions

• Receives user input
• Ouput information to the user

Question 3

Types of User Interface

Answer 3

• CLI

- GUI

Question 4

Advantages of CLI

Answer 4

-Allows expert users to perform tasks quickly
-Requires fewer system resources
-Commands can be written into “batch”
files and run as programs

Question 5

Features of GUI

Answer 5

• Windows - shows the program/file
• Icons - small images on the desktop that can be clicked on to open programs
• Menu - allow user to select tools/options within software application
• Pointer-An arrow on the screen the user can use to select windows,icons or menus

Question 6

Software Libraries

Answer 6

-collection of pre-made programs (created by someone else) that anyone can use in their program

Question 7

Software Utilities

Answer 7

A program to control the functioning of a computer

• Keeps the computer running smoothly
• A utility typically does one specific task

Question 8

Firewall

Answer 8

Filters/controls what programs have access into your computer
controls the incoming and outgoing network traffic

Question 9

Anti-Virus Software

Answer 9

Software that monitors a computer against viruses and quarantines any infected files , warning the user

Question 10

Defragmentation

Answer 10

Software that puts all the pieces of the files back together into contiguous disk space

Question 11

System Restore

Answer 11

Allows a computer to be rolled back to an earlier point in time when it was running smoothly

Question 12

Formatting Disks

Answer 12

This prepares a disk for use.It creates sectors on the disk where files can be saved.It deletes any files saved on the disk.

Question 13

Control Panel

Answer 13

Software that allows a user to configure the appearance and functioning of a computer

Question 14

Example of uses of Control Panel

Answer 14

• Add users
• Add hardware
• Change security settings
• Change the desktop
• Change the language

Question 15

Advantages of software libraries

Answer 15

• saves times

- condenses program meaning it looks more pleasing

Question 16

Disadvantages of software libaries

Answer 16

• Program documentation may be hard to understand of incomplete
• They may carry bugs

Question 17

Software development environment

Answer 17

Provide programmers with various tools that are needed to create programs e.g

• editor
• Compiler
• Interpreter
• Linker
• Debugger