O Level Computer Science past papers

O Level Computer Science 2210 questions by topic

Every past-paper question part, sorted by the syllabus topic it tests. Each one has its official mark scheme.

Data representation

• Number systems · 25 questions
• Text, sound and images · 9 questions
• Data storage and compression · 20 questions

Data transmission

• Types and methods of data transmission · 18 questions
• Methods of error detection · 13 questions
• Encryption · 9 questions

Hardware

• Computer architecture · 21 questions
• Input and output devices · 32 questions
• Data storage · 26 questions
• Network hardware · 9 questions

Software

• Types of software and interrupts · 15 questions
• Types of programming language, translators and IDEs · 11 questions

The internet and its uses

• The internet and the world wide web · 20 questions
• Digital currency · 2 questions
• Cyber security · 32 questions

Automated and emerging technologies

• Automated systems · 11 questions
• Robotics · 5 questions
• Artificial intelligence · 11 questions

Algorithm design and problem-solving

• Development life cycle and decomposition · 8 questions
• Explaining the purpose of an algorithm · 14 questions
• Standard methods (searching, sorting, totalling, counting) · 9 questions
• Validation and verification · 18 questions
• Test data and trace tables · 21 questions
• Finding and correcting errors · 15 questions
• Writing and amending algorithms · 18 questions

Programming

• Programming concepts · 32 questions
• Arrays · 3 questions
• File handling · 5 questions

Databases

• Databases and SQL · 13 questions

Boolean logic

• Logic gates and circuits · 25 questions

Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.