Cambridge IGCSE · 0478 · Paper 1 · Computer systems
Computer Science 0478/12 May/June 2015 past paper
Cambridge IGCSE Computer Science (0478) Paper 1 (Computer systems), variant 2, May/June 2015: the question paper and its official mark scheme, 10 questions worth 75 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 10
- Marks
- 75
- Grade A from
- 57
File names: 0478_s15_qp_12 · 0478_s15_ms_12
Grade thresholds for 0478/12 May/June 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 |
|---|---|---|---|---|---|---|
| 57 | 49 | 42 | 35 | 28 | 24 | 20 |
Topics in this paper
Which syllabus chapters 0478/12 May/June 2015 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Hardware | 4 | 31 |
| Data Representation | 2 | 15 |
| Software | 2 | 15 |
| The Internet and its Uses | 2 | 14 |
Questions in 0478/12 May/June 2015
- Question 1
(a) Four statements about cookies are shown in the table below. Study each statement. Tick (✓) to show whether the statement is true or false. Statement True False they are a form of spyware they are used only in advertising …
- Question 2
The majority of mobile phones use touch screens. Three common technologies are used by different mobile phone manufacturers. Choose one of the following mobile phone technologies: • resistive • capacitive • infrared Chosen technology (i) Describe how your chosen technology …
- Question 3
Four input devices, four descriptions and four applications are shown below. Draw a line to connect each input device to its correct description. Then connect each description to its correct application. Input device Description Application barcode reader copies paper documents …
- Question 4
(a) State what is meant by the term SSL. (b) The following stages take place when a user wishes to access a secure website. Put each stage in sequence by writing the numbers 1 to 6 in the column on …
- Question 5
Parity checks are often used to check for errors that may occur during data transmission. (a) A system uses even parity. Tick (✓) to show whether the following three bytes have been transmitted correctly or incorrectly. Received byte Byte transmitted …
- Question 6
A gas fire has a safety circuit made up of logic gates. It generates an alarm …
- Question 7
(a) Street lighting is controlled automatically. A light sensor and a microprocessor are used to decide when to switch each street light on or off. Describe how the sensor, microprocessor and light interact to switch the street light on or …
- Question 8
Five computing terms are described below. Write the name of the term being described. Software that anyone can download for free from the Internet and then use without having to pay any fees. The usual copyright laws apply and a …
- Question 9
(a) Five statements about interpreters and compilers are shown in the table below. Study each statement. Tick (✓) to show whether the statement refers to an interpreter or to a compiler. Statement Interpreter Compiler creates an executable file that runs …
- Question 10
Letters from the alphabet are represented in a computer by the following denary (base 10) values: …
Other Computer Science papers from May/June 2015
- 0478/11 Computer systems
- 0478/13 Computer systems
- 0478/21 Algorithms, programming & logic
- 0478/22 Algorithms, programming & logic
- 0478/23 Algorithms, programming & logic