We counted every question in our own IGCSE & O Level Computer Science 0478 & 2210 question bank — 259 questions worth 1,855 marks, 2023 to 2026 — and sorted them into the 13 chapters of the syllabus. Arrays carries the most marks.
Every chapter, heaviest first
| Chapter | Questions | Marks | Share | |
|---|---|---|---|---|
| Arrays | 24 | 360 | 19.4% | |
| Programming Concepts | 65 | 316 | 17.0% | |
| Boolean Logic | 29 | 221 | 11.9% | |
| Databases | 27 | 219 | 11.8% | |
| Trace Tables to Document Dry Runs of Algorithms | 18 | 153 | 8.2% | |
| Identifying Errors in an Algorithm | 17 | 140 | 7.5% | |
| Standard Methods of a Solution | 17 | 137 | 7.4% | |
| Writing and Amending Algorithms | 7 | 70 | 3.8% | |
| Test Data | 12 | 64 | 3.5% | |
| File Handling | 9 | 56 | 3.0% | |
| The Program Development Life Cycle | 12 | 49 | 2.6% | |
| Validation and Verification | 13 | 46 | 2.5% | |
| Computer System, Sub-System and Decomposition | 9 | 24 | 1.3% |
The top 4 of 13 chapters hold half the marks in the bank. The three heaviest are Arrays, Programming Concepts, Boolean Logic. The lightest is Computer System, Sub-System and Decomposition, at 1.3% of the marks.
Inside the chapters
| Sub-topic | Chapter | Questions | Marks |
|---|---|---|---|
| 10.3 | Boolean Logic | 23 | 193 |
| 8.1 | Programming Concepts | 51 | 191 |
| 9.4 | Databases | 24 | 189 |
| 7.7 | Trace Tables to Document Dry Runs of Algorithms | 18 | 153 |
| 7.8 | Identifying Errors in an Algorithm | 17 | 140 |
| 7.4 | Standard Methods of a Solution | 17 | 137 |
| 7.9 | Writing and Amending Algorithms | 7 | 70 |
| 7.6 | Test Data | 12 | 64 |
| 8.3 | File Handling | 9 | 56 |
| 7.1 | The Program Development Life Cycle | 12 | 49 |
How to use this
Revise the heaviest chapters first. A chapter worth 19% of the marks deserves more than one worth 1.3%.
Use it to decide what to practise, not what to skip. A light chapter can still be the difference between two grades, and Cambridge can set anything on the syllabus.
Check yourself chapter by chapter rather than by whole papers, so a weak topic shows up while there is still time to fix it.
These are ExamYard’s own figures: the questions in our IGCSE & O Level Computer Science 0478 & 2210 question bank, grouped into the chapter of the syllabus each one tests, and added up by the marks each carries. No question text, mark scheme or examiner report is reproduced on this page. The printed book and the online bank are counted separately, so the totals on this page need not match the book’s own page.