Cambridge IGCSE · 0478 · Paper 1 · Computer systems

Computer Science 0478/12 Oct/Nov 2015 past paper

Cambridge IGCSE Computer Science (0478) Paper 1 (Computer systems), variant 2, Oct/Nov 2015: 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: 44

Open the question paper Mark scheme

File names: 0478_w15_qp_12 · 0478_w15_ms_12

Grade thresholds for 0478/12 Oct/Nov 2015

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
44	37	30	25	20	18	16

Topics in this paper

Which syllabus chapters 0478/12 Oct/Nov 2015 tested, by marks. Each chapter links to every past-paper question on it.

Chapter	Questions	Marks
Data Representation	3	30
The Internet and its Uses	2	17
Hardware	2	16
Data Transmission	2	12

Questions in 0478/12 Oct/Nov 2015

Question 1The Internet and its Uses · 9 marks
There are a number of security risks associated with using the Internet. Name three of these risks. For each, state why it is a risk and describe how the risk can be minimised. Security risk 1 Why it is a …
Question 2Data Representation · 6 marks
Seven computer terms and seven descriptions are shown below. Draw a line to link each computer term to its most appropriate description. Computer term Description Interface Reduction of file size by permanently removing some redundant information from the file Interrupt …
Question 3Data Transmission · 4 marks
The flowchart on the opposite page shows what happens when the barcode on a product is scanned at the checkout in a supermarket. The barcodes are used in an automatic stock control system. Several of the statements in the flowchart …
Question 4Data Representation · 16 marks
(a) (i) Convert the following two hexadecimal numbers into binary: …
Question 5Hardware · 9 marks
A security system uses sensors, a camera and a microprocessor to capture images of each person entering a large shopping mall. (a) Describe how the sensors, camera and microprocessor interact to identify certain people entering the mall. (b) Each image …
Question 6The Internet and its Uses · 8 marks
(a) Explain what is meant by HTML. (b) HTML uses both structure and presentation. Describe what is meant by the two terms. Structure Presentation (c) Explain the function of a web browser.
Question 7Data Transmission · 8 marks
(a) Check digits are used to ensure the accuracy of input data. A 7-digit code number has an extra digit on the right, called the check digit. Digit position …
Question 8Data Representation · 8 marks
The steps to print a document using a laser printer are shown in the table below. Put each step in the correct order. The first step has been done for you. Step Order As the printing drum rotates, a laser …
Question 9Hardware · 7 marks
A remote-controlled model car contains RAM, ROM and a solid state drive. The car receives radio signals from its remote control. It can only receive radio signals of a certain frequency. The manufacturer sets this frequency and the owner cannot …

Other Computer Science papers from Oct/Nov 2015

Questions students ask

Where can I get the 0478/12 Oct/Nov 2015 mark scheme?

Open the mark scheme above - it is the official Cambridge scheme for this exact paper (0478_w15_ms_12), and on a wide screen it sits beside the question you are reading.

What was the grade threshold for an A in 0478/12 Oct/Nov 2015?

44 marks out of 75, a C needed 30.

Which topics came up in 0478/12 Oct/Nov 2015?

Mostly Data Representation, The Internet and its Uses, Hardware. The full list is in the table above.

Do I need an account to open 0478/12 Oct/Nov 2015?

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.