Cambridge IGCSE · 0478 · Paper 1 · Computer systems
Computer Science 0478/13 Oct/Nov 2018 past paper
Cambridge IGCSE Computer Science (0478) Paper 1 (Computer systems), variant 3, Oct/Nov 2018: the question paper and its official mark scheme, 13 questions worth 75 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 13
- Marks
- 75
- Grade A from
- 54
File names: 0478_w18_qp_13 · 0478_w18_ms_13
Grade thresholds for 0478/13 Oct/Nov 2018
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 |
|---|---|---|---|---|---|---|
| 54 | 45 | 37 | 28 | 20 | 12 | 4 |
Topics in this paper
Which syllabus chapters 0478/13 Oct/Nov 2018 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Hardware | 6 | 30 |
| Data Representation | 2 | 14 |
| The Internet and its Uses | 2 | 11 |
| Data Transmission | 2 | 10 |
| Boolean Logic | 1 | 10 |
Questions in 0478/13 Oct/Nov 2018
- Question 1
There are six output devices and six descriptions shown. Draw a line to connect each output device to the most appropriate description. Uses a high-intensity beam of light shone through three layers of changing pixels Laser Printer Description Device Uses …
- Question 2
Parity checks and Automatic Repeat reQuests (ARQ) can be used to check for errors during data transmission and storage. (a) A system uses even parity. Write the appropriate parity bit for each byte. Parity Bit …
- Question 3
An elevator (lift) has a maximum weight limit of 2400 kg. The weight carried is monitored by a sensor and a microprocessor. Describe how the sensor and the microprocessor are used to make sure the maximum weight limit is not …
- Question 4
The MAC address of a device is represented using hexadecimal. A section of a MAC address is shown. Each pair of hexadecimal digits is stored using 8-bit binary. (a) Complete the table to show the 8-bit binary equivalents for the …
- Question 5
Data can be transferred using half-duplex serial transmission. (a) Describe serial transmission. (b) Give one application of serial data transmission. (c) Describe half-duplex data transmission.
- Question 6
Sarah stores data electronically. Describe three methods that she could use to avoid loss of stored data. Method 1 Method 2 Method 3
- Question 7
David is writing a program using a high-level language. The program will be published and sold for profit. (a) David uses an interpreter when creating the computer program. State three features of an interpreter. Feature 1 Feature 2 Feature 3 …
- Question 8
Alice enters a URL into a web browser to access a webpage. (a) State what URL represents. …
- Question 9
Describe two differences between Read Only Memory (ROM) and Random Access Memory (RAM). Difference 1 Difference 2
- Question 10
- Question 11
The fetch-execute cycle make use of registers. (a) Describe the role of the Program Counter (PC). (b) Describe the role of the Memory Data Register (MDR).
- Question 12
Explain the difference between a Musical Instrument Digital Interface (MIDI) file and a MP3 file.
- Question 13
State which types of storage device or media would be most suitable for these scenarios. For each device or media, justify your choice. (a) Creating a backup of 150 GB of data. Justification (b) Storing applications on a tablet device. …
Other Computer Science papers from Oct/Nov 2018
- 0478/11 Computer systems
- 0478/12 Computer systems
- 0478/21 Algorithms, programming & logic
- 0478/22 Algorithms, programming & logic
- 0478/23 Algorithms, programming & logic