This deep dive covers Deep Dive: Why Topology Matters within Network Topologies for GCSE Computer Science. Revise Network Topologies in 3.5 Fundamentals of Computer Networks for GCSE Computer Science with 16 exam-style questions and 18 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 3 of 12 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.
Deep Dive: Why Topology Matters
Network topology determines how data flows, what happens when failures occur, and how much the network costs:
- Reliability: Does the whole network collapse if one part fails? Or can data find alternative routes?
- Cost: How much cable do you need? Simple topologies use less cable but may be less reliable
- Performance: Can data travel directly, or must it pass through a central point causing bottlenecks?
- Scalability: How easy is it to add new devices without disrupting the network?
The key principle: You must balance reliability, cost, and performance based on your needs. Mission-critical systems (hospitals, data centers) use expensive but reliable mesh. Home and office networks use cheaper star topology!
Practice questions for Network Topologies
In a star network topology, all devices connect to which central component?
State two advantages of a mesh network topology. [2 marks]