Quick Reference - Topologies Summary
Part of Network Topologies — GCSE Computer Science
This key facts covers Quick Reference - Topologies Summary within Network Topologies for GCSE Computer Science. Revise Network Topologies in 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 11 of 11 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 11 of 11
Practice
15 questions
Recall
18 flashcards
Quick Reference - Topologies Summary
Star Topology:
- Structure: Central switch with radiating connections
- Advantages: Easy to add devices, isolated failures, easy troubleshooting
- Disadvantages: Central switch = single point of failure
- Use: Homes, offices, schools (most common!)
Mesh Topology:
- Structure: Multiple interconnections between devices
- Advantages: No single point of failure, very reliable, multiple paths
- Disadvantages: Very expensive, complex setup and management
- Use: Critical systems, data centers, ISP backbone
Bus & Ring (Historical):
- Bus: Single backbone cable - cheap but unreliable (obsolete)
- Ring: Closed loop with token passing (obsolete)
- Note: Both largely replaced by star in modern networks
The Golden Rule:
Star = Central switch (single point of failure) but cheap and practical. Mesh = No single point of failure (redundant paths) but very expensive. Always mention cost vs reliability trade-off!