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In this topology all the nodes are connected to a central node which further rebroadcast all the transmission received from one node to another node. It is point to point connection between two devices.
Every node is individual connected from the HUB or SWITCH with the help of  UTP cable from the one end of HUB or SWITCH with the other end of node having LAN card on in it. 
We can connect maximum of 1024 nodes and the maximum segment length 100 meters.

Requirements:
1.HUB or SWITCH
2.UTP cable
3.Cat 5 cable 
4. Connectector Rj 45(register jack)
5.NIC (network interface card, LAN card)

Speed:-
HUB:10mbps
Switch:100mbps
LAN card:10/100/1000 mbps

IEEE define star topology as :
If we use HUB: 10 base T
If we use SWITCH :100 base T

100 base fx is define to use fiber optic cable. 
we are using straight cabling for establish star 
topology.



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