Cambridge IGCSE · 0478 · Paper 2 · Algorithms, programming & logic
Computer Science 0478/21 Oct/Nov 2017 past paper
Cambridge IGCSE Computer Science (0478) Paper 2 (Algorithms, programming & logic), variant 1, Oct/Nov 2017: the question paper and its official mark scheme, 6 questions worth 150 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 6
- Marks
- 50
- Grade A from
- 31
File names: 0478_w17_qp_21 · 0478_w17_ms_21
Grade thresholds for 0478/21 Oct/Nov 2017
The minimum raw marks Cambridge set for each grade on this component (out of 50). Thresholds change every session and variant, so always compare your score with the paper you actually sat.
| A | B | C | D | E | F | G |
|---|---|---|---|---|---|---|
| 31 | 23 | 16 | 12 | 9 | 6 | 3 |
Topics in this paper
Which syllabus chapters 0478/21 Oct/Nov 2017 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Programming | 3 | 111 |
| Algorithm Design and Problem-Solving | 2 | 33 |
| Databases | 1 | 6 |
Questions in 0478/21 Oct/Nov 2017
- Question 1
(a) All variables, constants and other identifiers should have meaningful names. (i) Declare suitable arrays for each of the planes to store time slots booked. (ii) Name one variable and one constant you used for Task 1 and state the …
- Question 2
This section of program code asks for 80 numbers between 100 and 1000 to be entered. It checks that the numbers are in the correct range, and stores them in an array. It counts how many of the numbers are …
- Question 3
(a) Explain the difference between a validation check and a verification check. (b) Describe, using an example, how data could be verified on data entry. (c) Explain what is meant by the term library routine.
- Question 4
(a) Four pseudocode descriptions and five pseudocode statements are shown. Draw one line to link each pseudocode description to the correct pseudocode statement. Not all pseudocode statements will be used. Pseudocode description Pseudocode statement A loop that will iterate at …
- Question 5
The flowchart below represents a program routine. Flag 0 Count 1 START END Is Name[Count] > Name[Count + 1]? Is Count = 4? Is Flag = 0? No No No Yes Yes Yes Temp Name[Count] Name[Count] Name[Count + 1] Name[Count …
- Question 6
A wildlife park has a database table, called LIVESTOCK, to classify and record its animal species. Part of the database table is shown. Species Classification Diet Legs Giraffe Mammal Herbivore 4 Elephant Mammal Herbivore 4 Crocodile Reptile Carnivore 4 Ostrich …
Other Computer Science papers from Oct/Nov 2017
- 0478/11 Computer systems
- 0478/12 Computer systems
- 0478/13 Computer systems
- 0478/22 Algorithms, programming & logic
- 0478/23 Algorithms, programming & logic