Have a look at the questions you got wrong and prioritize your study.
| Question | Unit | Topic |
| 1 | Computer Systems | Peripherals |
| 2 | Computer Systems | Data Representation |
| 3 | Computer Systems | Data Representation |
| 4 | Computer Systems | Networks |
| 5 | Computer Systems | Data Representation |
| 6 | Software Development | Design |
| 7 | Software Development | Constructs |
| 8 | Software Development | Constructs |
| 9 | Software Development | Languages and Environments |
| 10 | Computer Systems | Structure |
| 11 | Software Development | SD Process |
| 12 | Software Development | Languages and Environments |
| 13 | Computer Systems | Peripherals |
| 14a | Software Development | SD Process |
| 14b | Software Development | SD Process |
| 14c | Software Development | Standard Algorithms |
| 14d | Computer Systems | Networks |
| 15a | Computer Systems | Data Representation |
| 15b | Computer Systems | Data Representation |
| 15c | Computer Systems | Peripherals |
| 15d | Computer Systems | Peripherals |
| 16a | Software Development | Constructs |
| 16b | Software Development | Constructs |
| 16c | Software Development | SD Process |
| 16d | Software Development | Languages and Environments |
| 19a | Computer Systems | Software |
| 19b | Computer Systems | Structure |
| 20a | Software Development | SD Process |
| 20b | Software Development | SD Process |
