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The first layer of Communication Networks the OSI Seven layer model is dedicated to the transmission media. Due to the variety of transmission media and network wiring methods, selecting the most appropriate media can be confusing - what is the optimal cost-effective solution.
There are two types of transmission media :
Guided Media :Unshielded Twisted Pair (UTP)Shielded Twisted PairCoaxial CableOptical Fiber

Unguided Media : Transmission media then looking at analysis of using them unguided transmission media is data signals that flow through the air. They are not guided or bound to a channel to follow. Following are unguided media used for data communication Radio TransmissionMicrowaveSatellite Communication

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