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GCSE Computer Science Review

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Students of Computer Science GCSE learn how computers work, how to write programs, and how data is represented and handled by applications in this course. Python programming language will be used by students to design and write programs.

GCSE Computer Science Review

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25 Questions

1. Device Drivers

ALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.Graphics Card and Network Interface Card are both .....A type of Systems SoftwareManagement/organisation of memory at the system level. Memory management is used to allocate free memory to programs that need it, and free up memory where it is not needed.Process of controlling the computer’s memory to optimise its system performance.

2. What are the purposes of the following components in the CPU?

ALU
Control Unit
Cache

A type of Systems SoftwareGraphics Card and Network Interface Card are both .....Management/organisation of memory at the system level. Memory management is used to allocate free memory to programs that need it, and free up memory where it is not needed.Process of controlling the computer’s memory to optimise its system performance.ALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.

3. Operating System

Graphics Card and Network Interface Card are both .....A type of Systems SoftwareManagement/organisation of memory at the system level. Memory management is used to allocate free memory to programs that need it, and free up memory where it is not needed.Process of controlling the computer’s memory to optimise its system performance.ALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.

4. Describe what is meant by memory management.

5. Network Policies

These are rules and also known as a AUP (Acceptable Use Policy). If implemented poorly, these could expose a network to numerous threats and users could be unaware of the risks of using software, emails and turning off firewalls.A type of Systems SoftwareGraphics Card and Network Interface Card are both .....ALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.

6. SQL Database

Graphics Card and Network Interface Card are both .....Most large companies use this type of database. e.g. Google, YouTube, PayPal, ebay.ALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.A type of Systems Software

7. White-Box

Penetration testing that simulates a malicious insider who may have login informationGraphics Card and Network Interface Card are both .....A type of Systems SoftwareALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.

8. What are two advantages for making an incremental backup instead of a full backup?

A type of Systems SoftwareALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.Graphics Card and Network Interface Card are both .....Takes less time to backup.Takes up less memory.Allows for more frequent backups.

9. What is meant by a Graphic User Interface (GUI)?

A type of Systems SoftwareALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.A user interface that uses graphics/images and words to represent the interaction between the end user and a computer.Icons to represent actions and resources.Graphics Card and Network Interface Card are both .....

10. data interception and theft

A type of Systems Softwarean attack using packet sniffers to intercept packets for analysis, allowing sensitive data to be decodedALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.Graphics Card and Network Interface Card are both .....

11. A large supermarket chain is setting up a new client server network. What is meant by the term ‘client server network’?

A type of Systems SoftwareALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.Graphics Card and Network Interface Card are both .....All devices are connected to a central server.The central server receives and processes requests from ‘clients’.The server stores user account details and files.

12. Windows is a commonly used operating system. What are two others?

LinuxMac OSA type of Systems SoftwareGraphics Card and Network Interface Card are both .....ALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.

13. What is meant by an ethical issue?

A type of Systems SoftwareGraphics Card and Network Interface Card are both .....What is considered to be right and wrong by society.ALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.

14. What is the protocol that is used to transmit data between different networks

ALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.A type of Systems SoftwareTransmission Control Protocol / Internet Protocol. TCP/IP.Graphics Card and Network Interface Card are both .....

15. What offences are illegal under the Computer Misuse Act?

ALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.Access computer systems without proper authorisationAccess computer systems with intent to commit a criminal offenceAlter data without permissionA type of Systems SoftwareGraphics Card and Network Interface Card are both .....

16. SQL Injection

A type of Systems SoftwareALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.Graphics Card and Network Interface Card are both .....This is where an attacker can execute malicious ________________________________ statements using software which controls a database management system.

17. Trojan

This is a type of malicious computer program which are designed to access computers by misleading users of its intent. It may be disguised as a useful programGraphics Card and Network Interface Card are both .....ALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.A type of Systems Software

18. Unpatched/Outdated Software

ALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.Software that isn't at its latest version and requires updates to preserve securityGraphics Card and Network Interface Card are both .....A type of Systems Software

19. Black-Box

A type of Systems SoftwareALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.Graphics Card and Network Interface Card are both .....Penetration testing that simulates an external hacking or cyber warfare

20. What are the effects of using a processor with more cores?

ALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.Graphics Card and Network Interface Card are both .....More instructions carried out simultaneously, the processor can process more instructions at the same time, which allows batches of instructions to be executed more quickly, which allows for more programs to be run at the same time.A type of Systems Software

21. Systems Software

ALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.Graphics Card and Network Interface Card are both .....A type of Systems SoftwareA type of software that controls the computers hardware

22. denial of service attack

Graphics Card and Network Interface Card are both .....ALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.A type of Systems SoftwareDoS attack - an attack designed to make a network or website fail by flooding it with useless network communications

23. Multitasking

24. Many fast broadband connections use fibre optic cable instead of copper. What are two reasons why fibre optic cable is the preferred choice?

Graphics Card and Network Interface Card are both .....A type of Systems SoftwareFibre optic cables transmit data through light so do not suffer from electrical interference.Data can be transmitted over very large distances without any loss of signal quality.They are able to transmit data at a higher bandwidth.ALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.

25. What are the ethical issues involved with the introduction of driverless cars?

A type of Systems SoftwareWho is to blame in an accident?In an emergency situation who should the car prioritise?Increase in use of cars is bad for the environment.Cost of the cars.Graphics Card and Network Interface Card are both .....ALU - Arithmetic & logic unit, used to perform arithmetic calculations (e.g. add, subtract, multiply), used to perform logical operations (e.g. , =, !=).

Control Unit - Control the flow of data within the CPU (i.e. between registers), control input and output of data to/from the CPU, controls the timing of signals sent within the CPU.

Cache - Stores frequently used instructions and data, built onto the CPU, provides faster access than RAM, allows instructions and data to be loaded into the CPU more quickly.

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25 Questions

❤ If you liked Fatskills, consider supporting us by checking out The Life Manuals You Never Got.

About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | What Should We Know? Privacy | Terms |

Without work one finishes nothing. - Ralph Waldo Emerson© 2026 Fatskills.com

All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement.

About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | What Should We Know?
Privacy | Terms |

Without work one finishes nothing. - Ralph Waldo Emerson
© 2026 Fatskills.com