Editing Network topology (section)

===Bus===
[[File:BusNetwork.svg|thumb|Bus network topology]]
{{Main article|Bus network}}
In local area networks using bus topology, each node is connected by interface connectors to a single central cable. This is the 'bus', also referred to as the [[Backbone network|backbone]], or [[Trunk (telecommunications)|trunk]]&nbsp;– all [[data transmission]] between nodes in the network is transmitted over this common transmission medium and is able to be [[Receiver (Information Theory)|received]] by all nodes in the network simultaneously.<ref name="Groth"/>

A signal containing the address of the intended receiving machine travels from a source machine in both directions to all machines connected to the bus until it finds the intended recipient, which then accepts the data. If the machine address does not match the intended address for the data, the data portion of the signal is ignored. Since the bus topology consists of only one wire it is less expensive to implement than other topologies, but the savings are offset by the higher cost of managing the network. Additionally, since the network is dependent on the single cable, it can be the [[single point of failure]] of the network. In this topology data being transferred may be accessed by any node.

====Linear bus====
In a linear bus network, all of the nodes of the network are connected to a common transmission medium which has just two endpoints. When the electrical signal reaches the end of the bus, the signal is reflected back down the line, causing unwanted interference.  To prevent this, the two endpoints of the bus are normally terminated with a device called a [[Electrical termination|terminator]].

====Distributed bus====
In a distributed bus network, all of the nodes of the network are connected to a common transmission medium with more than two endpoints, created by adding branches to the main section of the transmission medium&nbsp;– the physical distributed bus topology functions in exactly the same fashion as the physical linear bus topology because all nodes share a common transmission medium.