Computer Systems

Units & Data Storage

5 Lessons | 5 Quizzes

Units & Numbers

Units & Numbers

Binary & Decimal Numbers

Binary & Decimal Numbers

Binary Addition

Binary Addition

Hexadecimal Numbers

Hexadecimal Numbers

Binary Shifting

Binary Shifting

Systems Architecture

4 Lessons | 4 Quizzes

CPU Architecture

CPU Architecture

Common CPU Components

Common CPU Components

The Fetch-Execute Cycle

The Fetch-Execute Cycle

CPU Performance & Embedded Systems

CPU Performance & Embedded Systems

Primary & Secondary Storage

3 Lessons | 3 Quizzes

Primary Storage

Primary Storage

Secondary Storage 1

Secondary Storage 1

Secondary Storage 2

Secondary Storage 2

Data Representation & Compression

3 Lessons | 3 Quizzes

Character Sets & Images

Character Sets & Images

Networks & Topologies

4 Lessons | 4 Quizzes

Types of Networks

Types of Networks

Network Hardware

Network Hardware

Network Topologies

Network Topologies

Wired & Wireless Networks, Protocols & Layers

4 Lessons | 4 Quizzes

Modes of Connection

Modes of Connection

Addresses & Standards

Addresses & Standards

Common Protocols & Layers

Common Protocols & Layers

Network Security

4 Lessons | 4 Quizzes

Forms of Attack 1

Forms of Attack 1

Forms of Attack 2

Forms of Attack 2

Identifying & Preventing Vulnerabilities 1

Identifying & Preventing Vulnerabilities 1

Identifying & Preventing Vulnerabilities 2

Identifying & Preventing Vulnerabilities 2

Systems Software

3 Lessons | 3 Quizzes

Operating Systems 1

Operating Systems 1

Operating Systems 2

Operating Systems 2

Utility Software

Utility Software

Ethical, Legal, Cultural & Environmental Impact

4 Lessons | 4 Quizzes

Ethical & Cultural Issues

Ethical & Cultural Issues

Environmental & Privacy Issues

Environmental & Privacy Issues

Data Protection & Computer Misuse

Data Protection & Computer Misuse

Copyright & Licencing

Copyright & Licencing

Units & Numbers

Computer Systems Units & Data Storage Units & Numbers Units & Numbers

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Current
Review
Answered
Correct
Incorrect

Question 1 of 10

1. Question
2 point(s)
What is a bit?

Select three statements that are true.
- It is the smallest unit of data inside a computer.
- It is either a 1 or a 0.
- It is a collection of 1’s and 0’s.
- It is represented by a switch being open or closed.
- It is a collection of bytes.
Correct

Incorrect
Question 2 of 10

2. Question
1 point(s)
What is a byte?
- It is a 1 or a 0.
- It is 4 bits.
- It is 8 bits.
- It is 16 bits.
Correct

Incorrect
Question 3 of 10

3. Question
1 point(s)
How many nibbles are there in a byte?
- 1
- 2
- 4
- 8
Correct

Incorrect
Question 4 of 10

4. Question
1 point(s)
How many bytes are there in a Kilobyte?
- 100
- 1000
- 100,000
- 1,000,000
Correct

Incorrect
Question 5 of 10

5. Question
1 point(s)
How many Kilobytes are there in a Gigabyte?
- 10
- 1000
- 100,000
- 1,000,000
Correct

Incorrect
Question 6 of 10

6. Question
2 point(s)
What is a Terabyte?

Select three statements that are true.
- 0.001 Petabytes.
- A thousand Gigabytes.
- A billion Megabytes.
- A billion Kilobytes.
- A thousand Petabytes.
Correct

Incorrect
Question 7 of 10

7. Question
1 point(s)
How many Kilobytes are there in 5 Petabytes?
- 5,000
- 5,000,000
- 5,000,000,000
- 5,000,000,000,000
Correct

Incorrect
Question 8 of 10

8. Question
1 point(s)
How many Megabytes are there in 56 Gigabytes?
- 5,600
- 56,000
- 560,000
- 5,600,000
Correct

Incorrect
Question 9 of 10

9. Question
1 point(s)
How many Megabytes are there in 840 Kilobytes?
- 0.084
- 0.84
- 8.4
- 84
Correct

Incorrect
Question 10 of 10

10. Question
1 point(s)
Why does all data have to be represented in binary in the computer?

Select two statements that are true.
- It is very fast.
- It is very simple.
- The computer components are made up of switches which can only store 1 or 0.
- It is easy to program as there only is a 1 or a 0
- Wires transfer data as electricity where one voltage is a 1 and another is a 0.
Correct

Incorrect

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