How is tree topology different from bus topology?
Tree topology is a hierarchical topology with multiple branches, where each branch can have one or more basic topologies like star, ring, and bus. It is usually realized in WANs to connect multiple LANs. In this network, data transmitted from the source reaches a centralized device and then passes through every branch.
In contrast, Bus topology connects each communicating device to a transmission medium known as the bus. Data sent from a node is transmitted to the length of the bus in both directions. A single backbone wire is shared among the nodes, which makes it cheaper and easier to maintain, but it is considered less secure and reliable.
Explanation
The answer is derived from sections 10.5.5 and 10.5.3 of the provided text. Tree topology is differentiated by its hierarchical structure with branches containing other topologies (hybrid), whereas Bus topology is characterized by a single shared backbone wire. The text highlights that Tree topologies are used for WANs connecting LANs, while Bus topologies are cheaper and easier to maintain but less secure.
Solution Steps
Step 1: Define Tree topology as hierarchical with branches containing basic topologies (star, ring, bus).
Step 2: Define Bus topology as devices connected to a single transmission medium (bus) sharing a backbone wire.
Step 3: Contrast the structure (branches vs. single bus) and characteristics (WAN usage vs. cheaper/less secure).