Cambridge IGCSE · 0478 · Paper 1 · Computer systems

Computer Science 0478/11 May/June 2021 past paper

Cambridge IGCSE Computer Science (0478) Paper 1 (Computer systems), variant 1, May/June 2021: the question paper and its official mark scheme, 8 questions worth 75 marks, with the grade thresholds. Free to open, no account needed.

Questions: 8
Marks: 75
Grade A from: 41

Open the question paper Mark scheme

File names: 0478_s21_qp_11 · 0478_s21_ms_11

Grade thresholds for 0478/11 May/June 2021

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
41	33	24	21	17	13	9

Topics in this paper

Which syllabus chapters 0478/11 May/June 2021 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
Data Transmission	3	34
Boolean Logic	2	22
The Internet and its Uses	2	11
Automated and Emerging Technologies	1	8

Questions in 0478/11 May/June 2021

Question 1The Internet and its Uses · 5 marks
Benedict has a computer that is assigned an Internet Protocol (IP) address. The IP address is: 198.167.214.0 The IP address is represented as denary values. (a) Convert the denary values 167 and 214 from the IP address to 8-bit binary. …
Question 2Boolean Logic · 12 marks
Julia inputs personal data into her computer. She stores three copies of the data using a hard disk drive (HDD), a solid state drive (SSD) and a USB flash memory drive. (a) Identify three devices Julia can use to input …
Question 3Data Transmission · 9 marks
A firewall can be used to help keep the data secure that is stored on a computer. (a) The given paragraph describes how the firewall operates to help keep the data secure. Complete the paragraph using the most appropriate terms …
Question 4The Internet and its Uses · 6 marks
Two internet risks are phishing and pharming. Describe what is meant by phishing and pharming. Phishing Pharming
Question 5Automated and Emerging Technologies · 8 marks
Jamelia has a greenhouse that she uses to grow fruit and vegetables. She needs to make sure the temperature in the greenhouse stays between 25 °C and 30 °C (inclusive). A system that has a temperature sensor and a microprocessor …
Question 6Boolean Logic · 10 marks
Consider the logic statement: …
Question 7Data Transmission · 14 marks
A music company has a website that allows users to stream music. The music is stored in sound files. (a) The sound files are compressed using lossless compression. (i) Describe how the sound files are compressed using lossless compression. (ii) …
Question 8Data Transmission · 11 marks
Four 7-bit binary values are transmitted from one computer to another. A parity bit is added to each binary value creating 8-bit binary values. All the binary values are transmitted and received correctly. (a) Identify whether each 8-bit binary value …

Other Computer Science papers from May/June 2021

Questions students ask

Where can I get the 0478/11 May/June 2021 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (0478_s21_ms_11), and on a wide screen it sits beside the question you are reading.

What was the grade threshold for an A in 0478/11 May/June 2021?

41 marks out of 75, a C needed 24.

Which topics came up in 0478/11 May/June 2021?

Mostly Data Transmission, Boolean Logic, The Internet and its Uses. The full list is in the table above.

Do I need an account to open 0478/11 May/June 2021?

No. Every paper opens for free without signing in. A free account also saves your pen marks and records your score against the grade thresholds.