What are the basic principle of network?

Answer 1

Networking is the practice of linking computing devices together with hardware and software that supports data communications across these devices.

Switches are used to connect multiple devices on the same network. The switch serves as a controller, allowing devices to share information and talk to each other.

Routers are used to tie multiple networks together. The router acts as a dispatcher, choosing the best route for your information to travel. Routers can include different capabilities such as the following:

• Firewall
• Virtual Private Network (VPN)
• IP Phone network

Network hubs enable any node connected to it to directly send data to others.

(Network switches do the same thing, but allow multiple connected nodes to send data directly to each other instead of to all others on the network as with hubs.)

Network repeaters receive the physical signals sent across a network connection and amplify their strength (such as electrical or radio power) to enable the signal to travel longer distances.

Network bridges connect two different kinds of physical network links together that otherwise would be incompatible, such as bridges that enable wireless devices to join a wired network. (Modern bridge technology is often physically integrated inside other types of devices.)