Cambridge IGCSE · 0478 · Paper 1 · Computer systems
Computer Science 0478/11 Oct/Nov 2015 past paper
Cambridge IGCSE Computer Science (0478) Paper 1 (Computer systems), variant 1, Oct/Nov 2015: the question paper and its official mark scheme, 13 questions worth 75 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 13
- Marks
- 75
- Grade A from
- 42
File names: 0478_w15_qp_11 · 0478_w15_ms_11
Grade thresholds for 0478/11 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 |
|---|---|---|---|---|---|---|
| 42 | 34 | 27 | 22 | 17 | 15 | 13 |
Topics in this paper
Which syllabus chapters 0478/11 Oct/Nov 2015 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Hardware | 7 | 46 |
| Data Representation | 2 | 12 |
| Data Transmission | 2 | 7 |
| The Internet and its Uses | 1 | 7 |
| Software | 1 | 3 |
Questions in 0478/11 Oct/Nov 2015
- Question 1
(a) Four hardware items are shown in the table below. For each hardware item: • name a suitable application • state how it is used in the application Give a different application in each case. Hardware item Application How the …
- Question 2
(a) Convert the hexadecimal number B5 into binary: Convert the binary number …
- Question 3
(a) Three statements about cookies are shown below. Study each statement. Tick (9) to show whether the statement is true or false. Statement True False Cookies can destroy or modify data in a computer without the user’s knowledge Cookies generate …
- Question 4
Six computer terms and six descriptions are shown below. Draw a line to link each term to its appropriate description. Term Description Browser Signal sent to a processor which may cause a break in execution of the current routine, according …
- Question 5
(a) Inkjet printers and laser printers are two common types of printer. Describe the features and principles of operation of each type of printer. (i) Inkjet printer (ii) Laser printer (b) Another type of printer is the 3D printer. Describe …
- Question 6
(a) State what is meant by encryption. (b) State what is meant by symmetric encryption. (c) Complete the diagram: plain text encryption algorithm
- Question 7
(a) Describe what is meant by lossy and lossless compression when applied to files. Lossy Lossless (b) Name and describe one type of file that uses lossy compression. Name Description (c) A company advertises its backup memory device as having …
- Question 8
State three features of a typical operating system. …
- Question 9
(a) Nicolae made the following statement: “data input is validated by typing it in twice” State why this statement is incorrect. (b) Nicolae needs to send 30 photos to a friend and he chooses to send all 30 together as …
- Question 10
Characters can be represented in a computer by a numerical code. The following list shows 16 characters with their numerical codes in denary: …
- Question 11
A passenger logs onto an airline website and types in the reference number for their flight. Once the passenger accesses their account they can choose their seat and also print out a boarding pass which contains a unique barcode. This …
- Question 12
Parity checks are used to check for errors during data transmission. A system uses odd parity. (a) Complete the following two bytes of data so that they both have odd parity: …
- Question 13
Identify which five computer terms are being described below. (a) A system designed to prevent unauthorised access to or from a private network or intranet; it examines all data traffic to and from the network and filters out anything that …
Other Computer Science papers from Oct/Nov 2015
- 0478/12 Computer systems
- 0478/13 Computer systems
- 0478/21 Algorithms, programming & logic
- 0478/22 Algorithms, programming & logic
- 0478/23 Algorithms, programming & logic