Cambridge IGCSE · 0478 · Paper 1 · Computer systems
Computer Science 0478/11 May/June 2025 past paper
Cambridge IGCSE Computer Science (0478) Paper 1 (Computer systems), variant 1, May/June 2025: the question paper and its official mark scheme, 9 questions worth 75 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 9
- Marks
- 75
- Grade A from
- 45
File names: 0478_s25_qp_11 · 0478_s25_ms_11
Grade thresholds for 0478/11 May/June 2025
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 |
|---|---|---|---|---|---|---|
| 45 | 35 | 24 | 21 | 18 | 15 | 12 |
Topics in this paper
Which syllabus chapters 0478/11 May/June 2025 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Hardware | 3 | 24 |
| Software | 3 | 21 |
| Data Transmission | 2 | 21 |
| The Internet and its Uses | 1 | 9 |
Questions in 0478/11 May/June 2025
- Question 1
The size of a file can be measured using different data storage units. (a) Tick (3) one box to show the smallest data storage unit. A byte B gibibyte (GiB) C kibibyte (KiB) D nibble (b) State how many tebibytes …
- Question 2
A clothes store has a ticket system to allow customers to speak to a personal shopper. The ticket displays a ticket number in hexadecimal, for example 11B. (a) The ticket system has an output device that creates a paper ticket. …
- Question 3
An image is converted to binary to be represented by a computer. Complete the table with the missing terms and definition about representing an image. Term Definition This is the smallest component of an image. resolution This is the number …
- Question 4
A restaurant has an electronic ordering system. The system allows customers to select the food they want to order. The data for the order is transmitted across their network to a computer in the restaurant kitchen. (a) The data is …
- Question 5
Data is processed by the central processing unit (CPU) in a computer that has a Von Neumann architecture. (a) Complete the table with the missing terms and definitions about processing data. Term Definition current instruction register (CIR) This is a …
- Question 6
Data can be encrypted using asymmetric encryption. (a) Complete the paragraph about asymmetric encryption. Use the terms from the list. Some of the terms in the list will not be used. You may use a term more than once. algorithm …
- Question 7
A student’s computer has primary storage. One example of primary storage is random access memory (RAM). (a) Identify one other example of primary storage. (b) Explain why RAM is an example of primary storage and not secondary storage. (c) The …
- Question 8
A robot is used to move car parts in a factory. (a) One characteristic of the robot is that it has a mechanical structure. Give one other characteristic of a robot. (b) The robot has firmware. State what is meant …
- Question 9
Each employee in a finance company has a computer and an electronic account. (a) Each computer has an operating system. One function of the operating system is to manage memory. Describe the role of the operating system in managing memory. …
Other Computer Science papers from May/June 2025
- 0478/12 Computer systems
- 0478/13 Computer systems
- 0478/21 Algorithms, programming & logic
- 0478/22 Algorithms, programming & logic
- 0478/23 Algorithms, programming & logic