Monday 30 May 2011

Network Topologies

Topology :- Topology defines the way a network is created i.e. the way the computers are connected with each other.The following are the types of topologies :-
1. Star
2. Bus
3. Ring
4. Mesh

Star Topology :- It is named as star as it looks like a star when the computers are connected with each other. Its central point is either a HUB or a Switch.
1. In this UTP(Unshielded Twisted Pair) cables are used.
2. RJ-45 connectors are used.
3. No need of a repeater as the port of the Hub works like repeater.
4. This topology is used mostly in todays network.



Bus Topology :-
1. In this coaxial wires are used.
2. T- Connectors are used.
3. Failure at one point damage the whole network.






Ring Topology :-
1.UTP wires are used.
2.RJ-45 connectors are used.
3.Repeaters are used.
4. Failure at one point doesnt break the whole network.



Mesh Topology :-
In this topology all the computers are connected with each other directly there isn't any hub or switch.
So, in this topology cost of wires and network cards is very much . This topology is good for two or three computer more than that cost is very much.If link between two computers break it will not damage the whole network.

  

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