Free CIE IGCSE Computer Science
Practice Questions

574 CIE IGCSE Computer Science questions with instant feedback across 27 topics, every one accompanied by an examiner-style mark scheme. Start your first quiz in 30 seconds — no card required.

• 📝Software40Q→
• 📝Hardware: output devices and their uses34Q→
• 📝Data representation: data storage units and file sizes20Q→
• 📝Programming concepts: procedures and functions, including parameter passing and return values20Q→
• 📝The internet and networking: hardware used in networks (router, switch, hub, NIC, WAP) and wired/wireless connections20Q→
• 📝Hardware: primary memory (RAM and ROM) and secondary storage (types, characteristics and uses)20Q→
• 📝Programming concepts: string handling operations (length, substring, concatenation, case conversion, character conversion)20Q→
• 📝Hardware: central processing unit (CPU) architecture, components and their functions (ALU, CU, registers, buses, cache)20Q→
• 📝Logic gates and logic circuits (AND, OR, NOT, NAND, NOR, XOR) and truth tables20Q→
• 📝Data transmission: encryption (symmetric, asymmetric, public and private keys, SSL/TLS)20Q→
• 📝Data representation: binary arithmetic including addition and overflow20Q→
• 📝Data transmission: methods of error detection (parity bits, majority voting, checksums, echo checking)20Q→
• 📝Data representation: two's complement (representation of negative numbers and subtraction)20Q→
• 📝Programming concepts: input/output, assignment and arithmetic, comparison and logical operators20Q→
• 📝Algorithm design and problem-solving: program development life cycle and the role of algorithms20Q→
• 📝Boolean algebra and simplification of logic expressions20Q→
• 📝Ethics, privacy and intellectual property (impact of technology, computer-use policies, copyright, open-source vs proprietary software)20Q→
• 📝Algorithm design and problem-solving: pseudocode and flowcharts — sequence, selection and iteration constructs20Q→
• 📝Data representation: number systems (binary, denary, hexadecimal) and conversion between them20Q→
• 📝Data representation: binary shifts (logical left and right shifts)20Q→
• 📝Data transmission: types of transmission (serial, parallel, simplex, half-duplex, full-duplex)20Q→
• 📝Programming concepts: arrays (1D and 2D) — declaration, access and manipulation20Q→
• 📝Algorithm design and problem-solving: searching algorithms (linear search, binary search)20Q→
• 📝Hardware: input devices and their uses20Q→
• 📝Programming concepts: sequence, selection (IF, CASE/SWITCH) and iteration (FOR, WHILE, REPEAT-UNTIL) constructs20Q→
• 📝Programming concepts: exception handling (use of try/except or equivalent)20Q→
• 📝Hardware: fetch-execute cycle and the effect of CPU characteristics on performance (clock speed, cores, cache size)20Q→

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