TOPOLOGY:LOGICAL TOPOLOGIES

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  Logical Topology


Logical Bus

This is  the commonly used logical topoology in LAN.

In logical bus when one computer sends a message it can be seen by all  computer but only the destination computer will use it.

We can identify a logical bus if we can send at any time.



Logical Ring

This is used in Token Ring network which uses a central device called MSAU ( Multi-Station Access Unit)

In this network only one computer can send at a time while other computer will need to wait in queue.

A special software called Token is available which is passed among all computers in the network only the computer with token can send.

We can identify a logical ring if all computers have separate connections for sending and receiving.  


Cellular Topology (wireless)

This is the same as  Logical Bus.

When one computer sends a message it can be seen by all computer but only destination computer will use it but there is no physical connections.

Also wireless networks can be divided into cells and network devices can travel from one cell to another ans still be able to communicate.

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