The course

1
Start here
Paper 1: computer systems, 1 hour 45 minutes, 75 marks, 50%. Paper 2: algorithms, programming and logic, 1 hour 45 minutes, 75 marks, 50%.
Free: A tour of the computer science course
2
Section 1: Data representation and transmission
7 of the 40 questions on each timed check
Free: Number systems, text, sound, images and file sizes Data transmission, error detection and encryption 51 questions
3
Section 2: Hardware and software
7 of the 40 questions on each timed check
Computer architecture, devices, storage and networks Operating systems, interrupts, languages and translators 56 questions
4
Section 3: The internet, security and emerging technologies
6 of the 40 questions on each timed check
The web, digital currency and cyber security Automated systems, robotics and AI 39 questions
5
Section 4: Algorithm design and problem-solving
7 of the 40 questions on each timed check
Program development, decomposition and design Free: Standard methods, validation, testing and trace tables 38 questions
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Section 5: Programming and databases
8 of the 40 questions on each timed check
Programming in pseudocode Arrays, files and databases 45 questions
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Section 6: Boolean logic
5 of the 40 questions on each timed check
Logic gates and truth tables Logic circuits and expressions from problems 28 questions