This comparison covers Circuit Switching vs Packet Switching within Packet Switching for GCSE Computer Science. Revise Packet Switching in 3.5 Fundamentals of Computer Networks for GCSE Computer Science with 15 exam-style questions and 18 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 8 of 12 in this topic. Use this comparison to connect the idea to the wider topic before moving on to questions and flashcards.
Circuit Switching vs Packet Switching
| Aspect | Circuit Switching | Packet Switching |
|---|---|---|
| Connection | Dedicated path established for entire communication | No dedicated path - packets use any available route |
| Route | Same route for entire duration | Each packet can take different route |
| Resource Usage | Inefficient - line reserved even when idle | Efficient - multiple transmissions share links |
| Setup | Connection setup needed before transmission | No setup - send packets immediately |
| Reliability | If connection fails, everything stops | Resilient - packets reroute around failures |
| Order | Data arrives in order | Packets may arrive out of order (need reassembly) |
| Latency | Consistent (predictable delay) | Variable (different routes = different delays) |
| Use Case | Traditional telephone calls | Internet, email, web browsing |
| Example | Landline phone call | Internet data transmission |
Practice questions for Packet Switching
Which of the following best describes packet switching?
Explain why packets from the same file can travel by different routes through a network. [2 marks]