What is a Network?

Internet

What is a Network?

A system that transmits any combination of voice, video and/or data between users. The network includes the network operating system in the client and server machines, the cables connecting them and all supporting hardware in between such as bridges, routers and switches. In wireless systems, antennas and towers are also part of the network.

A network is a group of two or more devices, such as computers, printers, and scanners, that can communicate and share files with each other. Devices on the network are often referred to as workstations, and each runs a networking program that enables the device to communicate with the other devices on the network and the server, a central computer that controls the network. (The server also stores files and programs and routes data between workstations, among other tasks.) In order to use the network, you are usually required to connect to it, or log on, using a user name and password. The software on the server verifies that the user name and password are correct, and then grants you access to the network and the information on it.

Once you are logged on to the network, you can store files, share them with other people, or use other network devices such as printers and scanners. For example, you can create a worksheet for students to access and complete online. You can also send e-mail to other people on the network if your network has an e-mail program installed. If your network server has an e-mail program and Internet software installed, you can send e-mail to people outside the network, like educators with whom you collaborate on research, and you can search for information on the World Wide Web. To connect to the World Wide Web, you must use the Internet connection on your network, or you must use a dial-up connection if you are not on a network or you are at home.