What is Quantum Cryptography?

send encrypted data using lights, making data unbreakable

What is a virtual reality?

an artificial environment that is created with software

Main features of mainframe computers?

Huge Storage Capacity, Several CPUs, Fast processing speed

GUI: needs an operating system to operate

What is mainframe computers?

A powerful computer, used for processing huge amount of data

Three main functions of Operating Systems:

File managment, run programs, Manages input/output devices

The main disadvantage of Personal Computer compared to Laptop

No portable, therefore, files more difficult to transfer

Major components of GUI

Windows, Icons, Menu, Pointing device

Requires users to type instructions such as commands

The main advantage of Personal Computer compared to Smartphone

Better specification for a given price

Limited to the icons provided on the screen

What are the main advantages of using robotics in the manufacturing industry?

Complete task with precision can work in extreme condition

What is vision enhancement?

video technology projets distant object closer to users

What is Biometric authentication system?

a system which recognizes individuals body parts

The main advantage of Personal Computer compared to Laptop

Can be upgraded and parts easily replaced

What is Artificial Intelligence (AI)?

Computer systems that can simulate human intelligence

What is 3-D and holographic imaging?

technology that allows 3-dimensional images to be produced

user interacts with a computer using pictures or icons/menus

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IGCSE ICT Chapter 1

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10 ICT IGCSE These questions are taken from slide: 1.3 Operating systems.

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Questions 20

Answers

1
What is Quantum Cryptography?
Send data through fiber optic
Send encrypted data using a special key
send encrypted data using lights, making data unbreakable
An application software to perform data encryption
2
What is a virtual reality?
Use for encryption of data
an artificial environment that is created with software
Use of robotics to create an artificial environment
Used only in computer games
3
Main features of mainframe computers?
Huge Storage Capacity, Several CPUs, Fast processing speed
Support multiple operating systems, used only at banks
More stable internet, portable, less power consumption
Fast processing speed, Longer Batteries, Better Video Card
4
CLI vs GUI (2)
CLI is more user-friendly than GUI
CLI: User doesn’t need to learn any commands
GUI: needs an operating system to operate
GUI: needs all commands to type in the correct order
5
What is mainframe computers?
Less powerful than a desktop computer and is used in banks
A computer where it has a stable internet connectivity
More portable compared to a laptop
A powerful computer, used for processing huge amount of data
6
Three main functions of Operating Systems:
Edit images, video editing functions, provide CLI/GUI
Delete files, Print pictures, provide power to CPU
File managment, run programs, Manages input/output devices
Run programs, execute a game, provide word processing tasks
7
The main disadvantage of Personal Computer compared to Laptop
More likely to be damaged compared to a laptop.
Easier to steal
No portable, therefore, files more difficult to transfer
Support lesser hardware specification
8
Major components of GUI
Text, keyword, Pictures
A menu, toolbar, desktop, windows
Desktop, mouse, GIF pictures, videos
Windows, Icons, Menu, Pointing device
9
CLI
is built around the concept of WIMP
Requires users to type instructions such as commands
more slower process compared to GUI
Uses mouse and keyword to type the commands
10
Methods used in Biometric Authentication System
Password and image
Finger and eyes recognition
Video and Audio recognition
Hair and Password
11
Feature of RAM
Stores Permanent data
Very large in size
Non- volatile
Faster to access by CPU
12
The main advantage of Personal Computer compared to Smartphone
Very fast to switch on and off compared to smartphone
Better specification for a given price
Does not generate heat
No loose cables. All components connected together
13
Disadvantage of GUI
Each command must be in correct format, spelling and so on
Difficult to edit once entered
A user needs to learn commands
Limited to the icons provided on the screen
14
What are the main advantages of using robotics in the manufacturing industry?
Complete task with precision can work in extreme condition
No maintenance required, Easy to build
Cheaper than humans, easy to program
Does not require complex programming, No human intervention
15
What is vision enhancement?
video technology projets distant object closer to users
An enhanced method to do biometric authentication
An application software to do video editing
Uses AI to detect objects
16
What is Biometric authentication system?
Computer systems that can simulate human intelligence
A powerful computer with a high number of RAM and CPUs
a system which recognizes individuals body parts
Is used for biometric authentication only
17
The main advantage of Personal Computer compared to Laptop
Can be upgraded and parts easily replaced
No loose cables. All components connected together
Supports 3G/4D data mobile
Touch screen technology
18
What is Artificial Intelligence (AI)?
Computer systems that can simulate human intelligence
A Supercomputer used to simulate real live scenario
A powerful computer with a high number of RAM and CPUs
Is used for biometric authentication only
19
What is 3-D and holographic imaging?
technology that allows 3-dimensional images to be produced
A special software that uses extensive image editing
is used by AI system to create a video-enhanced production
used only at the entertainment industry
20
GUI
is built around the concept of typing the codes
more slower process compared to GUI
user interacts with a computer using pictures or icons/menus
Requires users to type instructions such as commands

IGCSE ICT Chapter 1 Flashcards | StudBud