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WalesComputer ScienceQuick questions
Unit 1 Fundamentals of Computer Science
Quick questions on Communication and the internet: networks, topologies, protocols and data transmission - WJEC A-Level Computer Science
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is packet switching?Show answer
In packet switching, a message is divided into packets, each carrying the destination address and a sequence number. Packets travel independently, possibly by different routes, and are reassembled in order at the destination. This uses shared links efficiently and is resilient: if a route fails, packets take another.
What is q1?Show answer
State what a network topology describes. [1 mark]
What is q2?Show answer
State the purpose of the sequence number added to each packet in packet switching. [1 mark]
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