Year 7 - Computing
Exploring the World Wide Web (WWW)
Computer networks and data transmission
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit pupils will explore the impact networks have on our daily lives. They will define what a network is and explore the benefits of networking, before covering how data is transmitted across networks using protocols. They will investigate different types of network and hardware required.
Lesson Summary
You will learn to explain how the components of the World Wide Web (WWW) work together to display web pages.
Key Notes
- The World Wide Web (WWW) relies on web browsers, web servers and web pages to deliver information and services.
- Explain how the internet uses packets to efficiently and reliably transmit data across networks.
- The HTTP protocol is used govern how data is exchanged between web browsers and servers.
- The HTTPS protocol provides secure communication between web browsers and servers.
Vocabulary To Learn
- web server: a networked computer that stores and provides web pages and other data on request
- HTTP: Hypertext Transfer Protocol, a set of rules that allows data such as web pages to be sent and received across the WWW
- HTTPS: the Hypertext Transfer Protocol Secure is a set of rules that allows data to be encrypted and exchanged securely via the WWW
- packet: a segment of data, usually part of a larger message
Common Mistakes To Avoid
- Data packets from a complete message always follow the same route to their destination. They are then put back together in the order they are received.
3 Quick Questions (With Answers)
1. Describe the system or process from this lesson in clear steps.
The World Wide Web (WWW) relies on web browsers, web servers and web pages to deliver information and services. Explain how the internet uses packets to efficiently and reliably transmit data across networks.
2. Define this computing term and give one practical example. 'web server'
a networked computer that stores and provides web pages and other data on request. Add one real device or system example to prove understanding.
3. Correct this common computing misconception.
Mistake: Data packets from a complete message always follow the same route to their destination. They are then put back together in the order they are received. Correction: Data packets are split and will be sent using the most efficient route at the time which often changes. Packets include data parts so they can be reassembled at the destination as long as the order of the packets is identified before being sent.
More Lessons In This Unit
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