Cambridge IGCSE · 0478 · Paper 1 · Computer systems
Computer Science 0478/12 Oct/Nov 2019 past paper
Cambridge IGCSE Computer Science (0478) Paper 1 (Computer systems), variant 2, Oct/Nov 2019: the question paper and its official mark scheme, 11 questions worth 75 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 11
- Marks
- 75
- Grade A from
- 42
File names: 0478_w19_qp_12 · 0478_w19_ms_12
Grade thresholds for 0478/12 Oct/Nov 2019
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 |
|---|---|---|---|---|---|---|
| 42 | 34 | 26 | 22 | 18 | 14 | 10 |
Topics in this paper
Which syllabus chapters 0478/12 Oct/Nov 2019 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Data Transmission | 3 | 34 |
| Hardware | 4 | 17 |
| The Internet and its Uses | 1 | 10 |
| Data Representation | 2 | 7 |
| Boolean Logic | 1 | 7 |
Questions in 0478/12 Oct/Nov 2019
- Question 1
Computer memory size is measured in multiples of bytes. Four statements about computer memory sizes are given in the table. Tick (✓) to show if the statement is True or False. Statement True (✓) False (✓) 25 kB is larger …
- Question 2
The Von Neumann model for a computer system uses several components in the fetch-execute cycle. One component that is used is the Control Unit (CU). Identify four other components that are used in the Von Neumann model for a computer …
- Question 3
The data from a sensor must be converted from analogue to digital to be processed by a computer. (a) State what is meant by analogue data. (b) State what is meant by digital data.
- Question 4
An 8-bit binary register contains the value: …
- Question 5
Audrey wants to send a sound file to Nico using email. The file is too large to attach to an email so Audrey decides to compress the file. She uses lossy compression to reduce the size of the sound file. …
- Question 6
Touch screen technologies can be described as resistive or capacitive. Six statements are given about resistive and capacitive technology. Tick (✓) to show if the statement applies to Resistive or Capacitive technology. Statement Resistive (✓) Capacitive (✓) This touch screen …
- Question 7
Gerald uses a keyboard to enter a website address into the address bar of his browser. (a) Describe how Gerald’s key presses on his keyboard are processed by the computer. (b) State three functions of a browser. …
- Question 8
- Question 9
Maisey purchases a new router and attaches it to her computer. The connection she sets up uses duplex data transmission. (a) Five statements are given about duplex data transmission. Tick (✓) to show if the statement is True or False. …
- Question 10
Data is valuable to a company. (a) Companies use error detection methods to make sure that data is accurate. One error detection method is the use of a check digit. Explain what is meant by a check digit and how …
- Question 11
Robert has a mobile device that uses RAM, ROM and an SSD. (a) State what the RAM, ROM and SSD are used for. RAM ROM SSD (b) Give two reasons why an SSD, rather than a HDD, is used in …
Other Computer Science papers from Oct/Nov 2019
- 0478/11 Computer systems
- 0478/13 Computer systems
- 0478/21 Algorithms, programming & logic
- 0478/22 Algorithms, programming & logic
- 0478/23 Algorithms, programming & logic