Repeater

Repeater

     In communication system, transmission media is used for transmitting information between communicating entities. Mostly cables are used as transmission media. While moving data through, the signal become weak after specific distance, this referred as attenuation. To address this problem, the signal needs to get boosted when they become weak, so to do this repeater is used. 

    

       Repeater is the networking device which operates at physical layer of OSI reference model. 

     A repeater is the network device which receives signals before it becomes weak, amplifies signal and sent to other end.

        Repeaters removes the unwanted noise in an incoming signal. Repeater regenerates weak signals into original bit patterns.

        Repeater is used to extend the length of LAN, by connecting two segments of single LAN. Repeater cannot connect LANs of different protocol.

         Repeater don't have packet filtering capability.