Computer Science J277,01 June 2023, OCR GCSE Past Papers with Mark Schemes

This computer science exam paper evaluates knowledge of binary data representation, internet protocols, computer networks, and system security. Key topics include binary arithmetic, file sizes, LAN benefits and drawbacks, and character sets like ASCII. Extended questions cover cybersecurity threats, utility software, and compression methods. Students analyze hardware-software relationships, client-server roles, and the implications of using open-source vs. proprietary software. Ethical, privacy, and legal issues of facial recognition systems are explored. Total marks: 80, emphasizing theoretical understanding and practical applications in computing.