OCR J277 GCSE Computer Science Mock Exam Questions 2

Give your students a completely fresh challenge with this set of two unseen, exam-style OCR J277 GCSE Computer Science papers, closely modelled on the structure, style and difficulty of the OCR specification. These papers are ideal for mock exams, in class assessments, revision lessons, intervention sessions or independent practice.

Paper 1 Computer Systems (86 marks)
This paper focuses on the theoretical foundations of computer science and includes questions on:

• Data representation (binary, hexadecimal, ASCII, sound and image representation)
• Units of storage and binary shifts
• Systems architecture and CPU components
• Memory and secondary storage
• Networks, protocols and IP addressing
• Network performance and routers
• Encryption and network security
• Physical and software security methods
• Legal, ethical and environmental considerations
• UK computing legislation (Data Protection Act, Computer Misuse Act, Copyright law)

Paper 2 Computational Thinking, Algorithms & Programming

This paper assesses problem solving and programming fundamentals using algorithmic thinking and Python-style pseudocode. Topics include:

• Computational thinking
• Selection and iteration
• Pseudocode and flowcharts
• Boolean logic and truth tables
• Logic gates and logical expressions
• Trace tables and algorithm tracing
• Sorting and searching algorithms
• Programming constructs and maintainability
• Translators (interpreters and compilers)
• Data types and variables
• SQL queries and database structures
• Input validation and testing
• Functions, arrays and program refinement
• Algorithm design for real-world scenarios

Each paper is supplied with a complete teacher-ready mark scheme designed to mirror OCR marking guidance.