Cambridge IGCSE · 0478 · Paper 1 · Computer systems
Computer Science 0478/11 Oct/Nov 2020 past paper
Cambridge IGCSE Computer Science (0478) Paper 1 (Computer systems), variant 1, Oct/Nov 2020: 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
- 46
File names: 0478_w20_qp_11 · 0478_w20_ms_11
Grade thresholds for 0478/11 Oct/Nov 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 |
|---|---|---|---|---|---|---|
| 46 | 38 | 30 | 26 | 21 | 17 | 13 |
Topics in this paper
Which syllabus chapters 0478/11 Oct/Nov 2020 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Data Transmission | 4 | 28 |
| The Internet and its Uses | 2 | 20 |
| Hardware | 2 | 15 |
| Boolean Logic | 1 | 12 |
Questions in 0478/11 Oct/Nov 2020
- Question 1
Six devices are shown. Tick (3) to show if each device is an Input, Output or Storage device. Device Input (3) Output (3) Storage (3) Keyboard Sensor 3D cutter 2D scanner Microphone Hard disk drive (HDD)
- Question 2
Ron is attending a music concert. He has bought three tickets. Each ticket number is displayed as a hexadecimal number. (a) Complete the table to show the 12-bit binary values and the Denary values for each Hexadecimal ticket number. Hexadecimal …
- Question 3
Transport Layer Security (TLS) protocol is used to secure the transmission of data over the Internet. (a) Identify the two layers in the TLS protocol. Layer 1 Layer 2 (b) The following paragraph explains how data is sent securely using …
- Question 4
Consider the given logic statement: X = ((NOT (A NAND B)) OR (B NOR C)) (a) Draw a logic circuit to represent the given logic statement. All logic gates must have a maximum of two inputs. Do not attempt to …
- Question 5
Luke is creating a website for his t-shirt design business. (a) He is using HTML to create the website. HTML can be separated into structure and presentation. (i) Give two examples of HTML structure. Example 1 Example 2 (ii) Give …
- Question 6
A Von Neumann model for a computer system contains several integrated circuits (IC). (a) Parallel data transmission is used in an IC. (i) Describe how data is transmitted using parallel data transmission. (ii) Give one benefit of using parallel, rather …
- Question 7
Nina is recording some music tracks that she has written. She is researching whether she should record them in MIDI or MP3 format. Explain what is meant by MIDI and MP3 format. MIDI MP3
- Question 8
Matthew is buying a new television with a display that uses LED technology. (a) Explain what is meant by LED technology. (b) State three benefits of LED technology. Benefit 1 Benefit 2 Benefit 3 (c) Identify one other technology that …
- Question 9
Victoria is entering data into a computer system. The data will be transmitted to cloud storage. (a) An even parity check is used to check for errors in the binary values after transmission. For each of the 7-bit binary values, …
Other Computer Science papers from Oct/Nov 2020
- 0478/12 Computer systems
- 0478/13 Computer systems
- 0478/21 Algorithms, programming & logic
- 0478/22 Algorithms, programming & logic
- 0478/23 Algorithms, programming & logic