ICT

Question 1

How do you check the validity of a bar code?

Answer 1

Check digit

Question 2

A non-volatile internal memory used to store the start-up instructions

Answer 2

ROM or Read Only Memory

Question 3

An internal component that provides the input and output of audio signals

Answer 3

Sound card

Question 4

An internal component that is composed of the main memory, the control unit and the arithmatic logic unit

Answer 4

CPU

Question 5

Compare the uses of a digital camera with a scanner

Similarities und differences

Answer 5

Similarities
* Both can capture images
* Both store digital data
Differences
* Digital camera is portable
* Scanner captures with more detail

Question 6

Explain what is meant by extranet

Answer 6

• An extranet is part of a company’s intranet
• It requires credentials and the password to access it

Question 7

What is the differences between Internet and Extranet

Answer 7

• Extranet is more secure
• There are more information on the internet

Question 8

Health issues

Typing on a keybord for too long

Answer 8

Carpal syndrome

Question 9

Health issues

Looking at a computer screen for a long time

Answer 9

Headache

Question 10

Health issues

Sitting with a poor posture

Answer 10

Back ache

Question 11

Problems that may occur if you change your passwords regularly

Answer 11

• More diffucult to find a different password (password could be weakened)
• User can easily forget the passwords (Can be locked out of the system)
• May have to write down passwords (Others can discover your passwords)

Question 12

Stae what is meant by software

Answer 12

Programs that can be used to control the computer

Question 13

Name the 2 types of software and what do dey mean

Answer 13

System software-Provide a platform for other softwares
Application software-Services that the user require to solve a task

Question 14

Name 3 external hardware devices

Answer 14

Mouse
Keyboard
Monitor

Question 15

Name 3 internal hardware devices

Answer 15

ROM
RAM
CPU

Question 16

Input devices when u scan Barcodes

Answer 16

Barcode Scanner
Camera

Question 17

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Output devices when u scan barcodes

Answer 17

Monitor screens
Speakers

Question 18

HDD

Answer 18

Has moving parts
Magnetic
Non-volatile storage
Can be External storage device

Question 19

SSD

Answer 19

Have limited numer of read and write cycles
Uses flash memory

Question 20

Main functions of a computer system

Software and hardware working together or smth

Answer 20

• Data Input
• Data Processing
• Data Storage
• Data Output
• Data Transmission

Question 21

2 main components of CPU

Answer 21

• Arithmetic and logic unit
• Control Unit

Question 22

Operations of the CPU

Answer 22

• Fetch instruction from the memory
• Decode into commands
• Execute commands
• Store results in memory

Question 23

6 advantages and disadvantages from using a computer rather than a phone

Answer 23

Advantages
Larger screen
Easier to type
Have more features
Disadvantages
Less portable
Easy to carry
More likely to have a phone in hand

Question 24

Compare intranet and extranet

Similarities and differences

Answer 24

Similarities
* Both have shared content
* Both ise internet technologies
* Both have restricted access

Differences
* Extranet can lead to more security breaches
* Intrenet shares data within an organisation whereas extranet shares content with external users and employees
* Extranet is a part of a company’s internet