The Complete Guide for Bus Topology

What is Bus Topology?
Bus topology is a specific kind of network topology where every computer and network device is connected to a single cable or backbone. It is a key global network topology that allows data transmission from one device to several others in a sequence.

Why is it important?
Understanding bus topology is important because it's cost-effective, easy to connect, requires less cable than other network topologies and is ideal for small networks. It also forms the basis of understanding other net topology structures.

How does it work?
In bus topology, each device communicates with the main cable, rather than directly with each other. If one device sends data, all other devices see the data, but only the intended recipient processes it. If the cable fails, the entire network goes down as bus topology does not have any alternative paths for data transmission.

Exam Tips: Answering Questions on Bus Topology
1. Understand the key characteristics of bus topology - easy setup, high reliance on the central cable, lack of privacy etc.
2. Be aware of potential weaknesses - like the difficulty to isolate faults, and that the entire network fails if the main cable does.
3. Know when to use bus topology - in small networks, when cost is a factor etc.
4. Understand how bus topology compares with other topologies, like ring or star.