OCR Computer Science Networks Revision Notes
Master OCR Computer Science Networks using simple revision notes, key facts and practice questions — all generated by AI for your exam.
Networks are systems that connect computers and devices to share resources and communicate. Understanding networks is essential for managing data transfer, security, and connectivity in modern computing environments.
Key Concepts
- 1Types of networks: LAN, WAN, MAN
- 2Network topologies: star, bus, ring
- 3Protocols: TCP/IP, HTTP, FTP
- 4Network devices: routers, switches, hubs
- 5Data transmission methods: wired vs. wireless
Simple Explanation
A network is like a group of friends who can talk to each other and share things. Just like friends can meet in different places (like a house or a park), computers can connect in various ways, such as through cables or Wi-Fi. They use special rules, called protocols, to make sure they understand each other when sharing information.
Memory Trick
“Remember 'NICE' for networks: Nodes, Interconnectivity, Communication, and Exchange.”
Flashcards
What does LAN stand for?
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Exam Questions
Describe and explain the differences between LAN and WAN. [6 marks]
6 marksView mark scheme hint▾
Define LAN and WAN, provide examples, and explain key differences in size, speed, and usage.
Explain how the star topology improves network reliability. [4 marks]
4 marksView mark scheme hint▾
Discuss the central hub concept and the impact of cable failure on the network.
What is meant by the term 'protocol' in networking? [2 marks]
2 marksView mark scheme hint▾
Define protocol and give an example of a commonly used protocol.
Practice Quiz
What type of network covers a large geographical area?
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