Final Exam Grade 9 Computer Objective paper 2021

---------- refers to strengthening of signal to solve the problem.

• Distortion

• Cross talk

• Amplification

• Signal

Radio waves are electromagnetic waves that are propagated by -----------

• Towers

• Routers

• Antennas

• Modem

What type of operating system MS-DOS is?

• Command Line Interface

• Graphical User Interface

• Menu Driven Interface

• Graphical Driven Interface

ProDOS is an example of -----------

• CLI

• Menu Driven

• GUI

• Window

The fastest and most powerful computer system

• Mainframe

• Super

• Wearable

• Mini

The internet is?

• A place to eat
• Millions of computers connected together
• A computer link
• A webpage

Processed information:

• Output

• Staorage

• Processing

• Input

What does LAN stand for?

• Local Area Network

• Line Area Network

• Local Around Network

• Listed Area Network

What type of signals are transmitted across fibre optic cables?

• Electric

• Light

• Sound

• Radio

These devices are used to keep information for later use.

• Input Devices

• Output Devices

• Storage Devices

• Processing Devices