Networking Devices-Repeater & Hub

Networking Device-Repeater:

1. A Repeater works in the Physical Layer.
2. It takes the weakened, corrupted signal and regenerates the signal bit by bit.
3. It is placed in a location from where the signal gets attenuated so it can not travel to the destination. Thus it is used to extend the reach of the network
4. It is not an amplifier as it identifies the noise and only recreates the signal bit by bit but amplifier amplifies whatever comes to it
5. A Repeater does not connect two LANs but connect the segments of a LAN

Attenuated signal recreated by Repeater:

Networking Device-Hub:

1. A Hub is a multiport repeater
2. It is used to implement a star topology
3. When a packet is received by a port (to which a computer is connected) of a Hub, it forwards that packet to all the ports of the Hub. Suppose that Hub is connected to a second Hub serially then the packet travels to that second Hub. Similarly if we have more Hubs in the network which are connected to each other to extend the reach of the network the packet unnecessarily reaches all hubs and all the computers. Thus the traffic in the network unnecessarily increases and collision of the packets also which results in slowing down of the network.

Networking Devices and Layers << Previous

Detailed explanation about other devices will continue in the next session..

Our aim is to provide information to the knowledge seekers.