O Level Computer Science Past Papers
Paper 1
Exam sittings
| Session | Questions | Syllabus code |
|---|---|---|
| November 2020 | 40 | 4021/1 |
| November 2019 | 40 | 4021/1 |
| November 2018 | 40 | 4021/1 |
| November 2017 | 39 | 7014/1 |
| November 2016 | 40 | 7014/1 |
| November 2015 | 40 | 7014/1 |
| November 2014 | 40 | 7014/1 |
Topics covered
ProgrammingSystems analysisSecurityComputer system structureInternetDatabasesNetworksFlowchartsControl systemsNumber systems
Sample questions
- The diagram represents components of a computer system. In which component would a…
- The spreadsheet shown is used to calculate weekly food costs at an animal farm. Which of…
- The entire logic circuit in Question 3 -- an OR gate and an AND gate both fed by inputs A…
- The flowchart shown starts, carries out a process, then tests a condition: on NO it…
- A scanner can be described as
- Which of the following is a type of system software?
- Which of the following devices is an output device?
- The CPU component that has the functions of fetching, decoding and executing instructions…
- Which of the following is not a benefit of modular programming?
- Devices that accept data from outside the computer and transfer it into the CPU are called
- The part of a computer where programs are run is called the
- Microsoft Windows is an example of
- Which of the following tasks is carried out by a microprocessor?
- The speed of a processor can be measured in
- The time taken to download a 256 kilobyte file from an internet website when the data…
- The Arithmetic Logic Unit performs one of the following
- A network of computers and other devices that is confined to a relatively small space is…
- An operating system lets the user group files together for convenience. Such a group is…
Paper 2
Exam sittings
| Session | Questions | Syllabus code |
|---|---|---|
| November 2020 | 28 | 4021/2 |
| November 2019 | 34 | 4021/2 |
| November 2018 | 34 | 4021/2 |
| November 2017 | 23 | 7014/2 |
| November 2016 | 31 | 7014/2 |
| November 2015 | 30 | 7014/2 |
| November 2014 | 35 | 7014/2 |
Topics covered
Computer terminologyExpert systemsNetworks and communicationRoboticsSystems analysis and designAlgorithmsDatabasesFlowcharts and trace tablesLogic circuits and truth tablesApplications software
Sample questions
- Which term describes the physical components of a computer system, such as a mouse,…
- In computer terminology, the physical components of a computer system -- such as the…
- Give the term for the loss of work-related skills that occurs when computer systems are…
- The gaining of illegal or unauthorised access into a computer system, often by cracking…
- What term refers to the physical, tangible components of a computer system, such as the…
- What is the name of the mode of transmission where data can be sent in both directions,…
- In the standard block diagram of a computer system, name the component of the Central…
- Which term describes the set of programs that controls computer hardware, such as a word…
- A group of 8 bits that represents a single character, such as 0101 0110, is known as a...
- Give the term for a program that self-replicates and spreads into other computers,…
- The scrambling of computer data into an unreadable form, to prevent it from being read by…
- What term refers to the set of programs and instructions that control computer hardware…
- What is the name for the exchange of signals between devices, such as a printer and a…
- Which of the following is NOT one of the five basic hardware components of a computer…
- Which of the following statements about ROM and RAM is true?
- Data processing in which transactions are collected together and processed periodically…
- Which of the following best describes e-commerce?
- A value or character appended to the end of a numeric code, used to check the validity of…
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