Introduction-To-Network

meaning A **computer network**, often simply referred to as a **network**, is a collection of computers and devices connected by communications channels that facilitates communications among users and allows users to share resources with other users. Networks may be classified according to a wide variety of characteristics.

Purpose Computer networks can be used for several purposes:
 * //Facilitating communications.// Using a network, people can communicate efficiently and easily via email, instant messaging, chat rooms, telephone, video telephone calls, and video conferencing.
 * //Sharing hardware.// In a networked environment, each computer on a network may access and use hardware resources on the network, such as printing a document on a shared network printer.
 * //Sharing files, data, and information.// In a network environment, authorized user may access data and information stored on other computers on the network. The capability of providing access to data and information on shared storage devices is an important feature of many networks.
 * //Sharing software.// Users connected to a network may run application programs on remote computers.