There are two papers both 1 hour and 30 minutes and equally weighted, the contents are;
Paper 1 - Computer systems. This component will assess:
• 1.1 Systems architecture
• 1.2 Memory and storage
• 1.3 Computer networks, connections and protocols
• 1.4 Network security
• 1.5 Systems software
• 1.6 Ethical, legal, cultural and environmental impacts of digital technology
Paper 2 - Computational thinking, algorithms and programming. This compenent will assess;
• 2.1 Algorithms
• 2.2 Programming fundamentals
• 2.3 Producing robust programs
• 2.4 Boolean logic
• 2.5 Programming languages and Integrated Development Environments
Both of the papers are non-calculator papers
You can find the full OCR j277 Computer Science Spec here:
https://www.ocr.org.uk/Images/558027-specification-gcse-computer-science-j277.pdf