Created page with "<p style="line-height:19px;color:rgb(0,0,0);font-family:sans-serif;font-size:13px;">A '''computer network''' or '''data network''' is a [http://en.wikipedia.org/wiki/Tele..."
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<p style="line-height:19px;color:rgb(0,0,0);font-family:sans-serif;font-size:13px;">A '''computer network''' or '''data network''' is a [http://en.wikipedia.org/wiki/Telecommunications_network telecommunications network] that allows [http://en.wikipedia.org/wiki/Computer computers] to exchange [http://en.wikipedia.org/wiki/Data_(computing) data]. In computer networks, networked computing devices pass data to each other along data connections. The connections ([http://en.wikipedia.org/wiki/Data_link network links]) between nodes are established using either [http://en.wikipedia.org/wiki/Transmission_line cable media] or [http://en.wikipedia.org/wiki/Wireless_network wireless media]. The best-known computer network is the [http://en.wikipedia.org/wiki/Internet Internet].</p>
<p style="margin-top:0.4em;margin-bottom:0.5em;line-height:19px;color:rgb(0,0,0);font-family:sans-serif;font-size:13px;">Network computer devices that originate, route and terminate the data are called [http://en.wikipedia.org/wiki/Node_(networking) network nodes].<sup class="reference" id="cite_ref-1" style="line-height:1em;unicode-bidi:-webkit-isolate;">[http://en.wikipedia.org/wiki/Computer_network#cite_note-1 [1]]</sup> Nodes can include [http://en.wikipedia.org/wiki/Host_(network) hosts] such as [http://en.wikipedia.org/wiki/Server_(computing) servers] and [http://en.wikipedia.org/wiki/Personal_computer personal computers], as well as [http://en.wikipedia.org/wiki/Networking_hardware networking hardware]. Two devices are said to be networked when a device is able to exchange information with another device.</p>
<p style="margin-top:0.4em;margin-bottom:0.5em;line-height:19px;color:rgb(0,0,0);font-family:sans-serif;font-size:13px;">Computer networks support [http://en.wikipedia.org/wiki/Application_software applications] such as access to the [http://en.wikipedia.org/wiki/World_Wide_Web World Wide Web], shared use of [http://en.wikipedia.org/wiki/File_server application and storage servers], [http://en.wikipedia.org/wiki/Printing printers], and fax machines, and use of [http://en.wikipedia.org/wiki/Email email] and [http://en.wikipedia.org/wiki/Instant_messaging instant messaging]applications. Computer networks differ in the physical media used to transmit their signals, the [http://en.wikipedia.org/wiki/Communications_protocol communications protocols] to organize network traffic, the network's size, [http://en.wikipedia.org/wiki/Network_topology topology] and organizational intent.</p>