Network devices

                                                     Cisco Certified Network Associate
                                                                 (200-301)

What is Router , Switch , hub  bridge ?

• ROUTER :- A router is a network device that send data packets connecting host network. Router carry out the trafic travel  direction functions on the Internet. A data packet is naturally forwarded from one router to a different network router  that compose the internetwork until it reach its end Router.

•          SWITCH :-  Network switch is a computer network device that connect devices simultaneously, by using packet switching to receive, procedure and forward data to the end device. Network switches is heigher version of hub it work smartly as compare hub

         Network switch broadcast the tranfic to reach destination only one time, forther 

         time they use unicast trafic

• HUB :- A hub is a  connection  devices in a network. Hubs are normally used to connect segments of a Network A hub contains many ports. When a packet arrives at one port, it is copied to the other ports so that all segments of the network can see all packets.

• BRIDGE :- A bridge is a device that separates two or further set of connections segments within one valid network. A bridge is usually placed between two part groups of Nodes that converse with each other, but not with other computer groups