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Topology is an description of communication between devices in series of computer. If 2 or more Nod connected hybrid topology is formed. There are three types of topology principle in a LAN , Bus, Ring and Star topologies. There Other topologies such as hybrid, mesh and wireless.

BUS TOPOLOGY is a LAN topology for a small scale. with the following specifications:

a. Interface:   Interfaces for bus topology is to use passive equipment or T connector. This equipment does not have the ability to strengthen or repeat signal  in the transfer. Accordingly the way, more further data / signal to move, so the weaker  signal in  the network.

b. Multipoint: Connection Bus topology has a multipoint connection where a conductive medium  in partnership by all Nod. What are the data that the transfer will be in partnership by all Nod.

c. Addressing:  This topology justify unicast, multicast and broadcast addressing. Each Nod will listen and  check the recipient address on the received frame. If a unicast address, Nod will check address on the frame. If the frontier of Nod will receive  the data if not, the frame will be discarded. If the multicast address, Nod involved in  group will take the data and unrelatedNod will discard the frame. If the broadcast  address, all Nod will save frames in transfer. description of delivery and Acceptance data image below illustrates how Conductor data from PC1 to PC 3. 

d. Medium Conductor usually medium Conductor for bus topology is a coaxial cable. weakness of Bus Topology:

excess of bus topology:

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