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1.6 NETWORK DEVICES
                 A network requires a variety of network devices, each of which serves a distinct purpose in the network. Let’s have a
                 look at a few network devices.

                 Repeater

                 A repeater is a device that receives a signal and enhances it. A repeater is a device that receives a signal and retransmits
                 it at a higher level or power so that it can travel further distances, such as more than 100 metres for conventional LAN
                 lines. It’s also referred to as a digital regenerator because it reshapes and amplifies digital signals.

                 Hub

                                            Hubs are devices that connect many computer networking devices. A hub also serves
                                            as a repeater, amplifying signals that have deteriorated due to vast distances travelled
                                            through  connected  connections.  Because  it  links  LAN  components  using  the  same
                                            protocols, a hub is the simplest of the network connecting devices.

                 Bridge

                 A bridge is a LAN device with multiple ports that can operate at different speeds. As a result, a bridge can be used to
                 combine smaller LANs to create a larger LAN. Devices on one LAN segment can connect with devices on another LAN
                 segment using a bridge.






                                                                  Bridge



                                                       Switch                 Switch






                 Unlike  hubs,  they  are  sophisticated  devices  that  send  data  to  the  outgoing  line  heading  to  the  destination  with
                 discretion.

                                               Switch

                                               Unlike bridges, which connect two or more LAN segments, switches connect individual
                                               network nodes. Each node in the network is connected to a different switch port. When
                                               it receives an incoming data frame, it sends it over a single line to the destination node.
                 Only one LAN is formed when all nodes are connected through switch.

                 Router

                 A router, like a switch, routes data packets according to their IP addresses. A router is a
                 device that sends data from one network to another. Routers connect LANs and WANs
                 and use a dynamically updating routing table to decide how to route data packets.







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