a2zinterviews

A receiver receives a signal before it becomes too weak or corrupted, regenerates the original bit pattern, sand puts the refreshed copy back onto the link. It operates on phycal layer of OSI model.

They divide large network into smaller components.They can relay frames between two originally separated LANs. They provide security through partitioning traffic. They operate on phycal and data link layer of OSI model.

It is a protocol converter.A gateway can accept a packet formatted for one protocol and convert it to a packet formatted for another protocol. It operates on all the seven layers of OSI model.

Entities comprising the corresponding layers on different machines are called peers.

Broadcast system allow addressing a packet to all destination by using a special code in address field. when packet is transmitted it is received and processed by every machine on the network.