Client-Server & Peer-to-Peer — A-Level Computer Science Revision
Revise Client-Server & Peer-to-Peer for A-Level Computer Science. Step-by-step explanation, worked examples, common mistakes and exam-style practice aligned to AQA, Edexcel and OCR.
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Go to Cyber SecurityWhat is Client-Server & Peer-to-Peer?
Client-server and peer-to-peer are two different models for network communication. In the client-server model, a central server provides resources and services to a number of clients. In the peer-to-peer model, all devices on the network are equal and can both provide and consume resources.
Board notes: Covered by AQA, Edexcel, and OCR. Students should be able to explain the difference between the client-server and peer-to-peer models and give examples of each.
Step-by-step explanationWorked example
The World Wide Web is an example of a client-server system. Your web browser is the client, and the web server that hosts the website is the server. A file-sharing application like BitTorrent is an example of a peer-to-peer system. Each user's computer can both download files from and upload files to other users.
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Common mistakes
- 1Thinking that the client-server model is always better than the peer-to-peer model.
- 2Not understanding the security implications of the peer-to-peer model.
- 3Confusing the role of a client and a server.
Client-Server & Peer-to-Peer exam questions
Exam-style questions for Client-Server & Peer-to-Peer with mark-scheme style solutions and timing practice. Aligned to AQA, Edexcel and OCR specifications.
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Step-by-step method
Step-by-step explanation
4 steps · Worked method for Client-Server & Peer-to-Peer
Core concept
Client-server and peer-to-peer are two different models for network communication. In the client-server model, a central server provides resources and services to a number of clients. In the peer-to-p…
Frequently asked questions
What are the advantages of the client-server model?
The client-server model is generally more secure and easier to manage than the peer-to-peer model. It also allows for centralized control of resources and data.
What are the advantages of the peer-to-peer model?
The peer-to-peer model is generally more scalable and resilient than the client-server model. It is also less expensive to set up, as it does not require a dedicated server.