Cambridge IGCSE · 0478 · Paper 1 · Computer systems
Computer Science 0478/12 Feb/March 2020 past paper
Cambridge IGCSE Computer Science (0478) Paper 1 (Computer systems), variant 2, Feb/March 2020: the question paper and its official mark scheme, 8 questions worth 75 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 8
- Marks
- 75
- Grade A from
- 51
File names: 0478_m20_qp_12 · 0478_m20_ms_12
Grade thresholds for 0478/12 Feb/March 2020
The minimum raw marks Cambridge set for each grade on this component (out of 75). Thresholds change every session and variant, so always compare your score with the paper you actually sat.
| A | B | C | D | E | F | G |
|---|---|---|---|---|---|---|
| 51 | 41 | 32 | 27 | 22 | 17 | 12 |
Topics in this paper
Which syllabus chapters 0478/12 Feb/March 2020 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Data Transmission | 3 | 41 |
| Data Representation | 1 | 9 |
| Boolean Logic | 1 | 8 |
| Automated and Emerging Technologies | 1 | 7 |
| Hardware | 1 | 5 |
| Software | 1 | 5 |
Questions in 0478/12 Feb/March 2020
- Question 1
The Von Neumann model for a computer system uses components, such as registers and buses, in the fetch-execute cycle. (a) Draw a line to connect each component to its correct description. Component Description Control Bus Increments to point to the …
- Question 2
A school network is used to transmit and store data about students. (a) Different types and methods of transmission can be used to send data across the network. Three descriptions about data transmission are given. Tick (3) one Method and …
- Question 3
Priya studies music at school. She is buying a new computer to complete her school work at home. (a) Priya has a choice between an internal Hard Disk Drive (HDD) and an internal Solid State Drive (SSD) to store data. …
- Question 4
Assemblers, compilers and interpreters are types of translators. Tick (3) to show which statements apply to each translator. Each statement may apply to more than one type of translator. Statement Assembler (3) Compiler (3) Interpreter (3) Translates low-level language to …
- Question 5
Programmers can use denary and hexadecimal values. These values are stored in a computer system using binary. (a) Explain why binary is used to store data in a computer system. (b) Complete the table to show how the denary value …
- Question 6
(a) Complete the truth table for the given logic circuit. Do not attempt to simplify the logic circuit. …
- Question 7
A room has an automatic lighting system. Electric lights are automatically turned on when a person enters the room and the natural light level in the room is 10 or less. Explain how sensors and a microprocessor are used to …
- Question 8
A student website provides research support and software downloads. (a) Students use a browser to access the web pages. Explain the role of a browser in this process. (b) The website owners are worried about a denial of service (DoS) …