Cambridge IGCSE · 0478 · Paper 1 · Computer systems
Computer Science 0478/12 May/June 2018 past paper
Cambridge IGCSE Computer Science (0478) Paper 1 (Computer systems), variant 2, May/June 2018: the question paper and its official mark scheme, 12 questions worth 75 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 12
- Marks
- 75
- Grade A from
- 45
File names: 0478_s18_qp_12 · 0478_s18_ms_12
Grade thresholds for 0478/12 May/June 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 |
|---|---|---|---|---|---|---|
| 45 | 35 | 26 | 21 | 15 | 10 | 5 |
Topics in this paper
Which syllabus chapters 0478/12 May/June 2018 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Data Representation | 5 | 25 |
| Hardware | 3 | 21 |
| Boolean Logic | 1 | 10 |
| Data Transmission | 1 | 9 |
| The Internet and its Uses | 1 | 6 |
| Software | 1 | 4 |
Questions in 0478/12 May/June 2018
- Question 1
Different units of data can be used to represent the size of a file, as it changes in size. Fill in the missing units of data, using the list given: • byte • gigabyte (GB) • megabyte (MB) • nibble …
- Question 2
(a) Nancy has captured images of her holiday with her camera. The captured images are stored as digital photo files on her camera. Explain how the captured images are converted to digital photo files. (b) Nancy wants to email the …
- Question 3
A stopwatch uses six digits to display hours, minutes and seconds. The stopwatch is stopped at: …
- Question 4
Jafar is using the Internet when he gets the message: “D03, page is not available” Jafar remembers that hexadecimal is often used to represent binary values in error codes. Convert the hexadecimal number in the error message into 12-bit binary.
- Question 5
The three binary numbers in the registers X, Y and Z have been transmitted from one computer to another. Parity bit Register …
- Question 6
Kelvin correctly answers an examination question about the Von Neumann model. Eight different terms have been removed from his answer. Complete the sentences in Kelvin’s answer, using the list given. Not all items in the list need to be used. …
- Question 7
Consider the logic statement: …
- Question 8
Dimitri is writing a computer program in a high-level language. He needs to send just the machine code for the program to his friend, electronically. It is important that the program is executed as quickly as possible. Identify which translator …
- Question 9
An advertisement in a magazine displays this barcode: (a) Identify this type of barcode. (b) Explain how the data stored in this barcode is read.
- Question 10
Alexandra has a new mobile device. It has a touch screen that uses capacitive technology. (a) Describe how a capacitive touch screen registers Alexandra’s touch. (b) Alexandra is wearing gloves because it is cold. She presses an icon on her …
- Question 11
A factory uses a security system to control a security light. The system uses a sensor and a microprocessor. Explain how the security system makes use of the sensor and the microprocessor to control the security light.
- Question 12
(a) Selma has some important personal information that she needs to email to her employer. She wants to make sure that if the personal information is intercepted, it cannot be understood. (i) State how Selma could email her personal data …
Other Computer Science papers from May/June 2018
- 0478/11 Computer systems
- 0478/13 Computer systems
- 0478/21 Algorithms, programming & logic
- 0478/22 Algorithms, programming & logic
- 0478/23 Algorithms, programming & logic