Types of physical Topologies And Networking Topologies




Types of  physical Typologies


Bus
Star
Ring
Mesh
Hybrid


Bus Topology

All stations are connected through a single cable
Terminator at each end(echo cancelation)
Transmission is passed back and forth from terminator.
Each message has address of destination.
All stations listen the message.


Types of  physical Typologies. OR Bus Topology










ADVANTAGE.
Low cost
DISADVANTAGE
Single point of failure
High management cost
LINEAR BUS VS DISTRIBUTED BUS.


Networking Topologies
Point to point vs multidrop
P2p is between 2 nodes only. Others cannot listen transmition.
e.g.  Telephone communication and leased line etc.
Very costly.
All the resources are held by two nodes only.

Only feasible for continues communication.





Multidrop
In multidrop all the computers connected listen to transmission  but only the one having its address receives it.
Shared transmission medium.

Multiplexers help in time/frequency multiplexing.



















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