Network Infrastructure

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Network is basically each of the components hardware & software involved in connecting computers across large & small distances. Networks are used to accommodate easy access to information, thus increasing richness for users. This section covers some of the components involved with networking, as well as the basic types of topologies used to connect networking devices, including computers.


One of the most important component which uses in networking is applications, which enables user to execute different tasks. Many applications are network aware. These applications allow you to access and use resources that are not located on your local computer. Some of the more common networking applications include E-mail, FTP, and providing a graphical representation to information.

To construct a network, you need three types of devices or components: computers, networking devices, and cabling. Computer devices such as PCs and file servers running Microsoft Windows, Macintosh OS, Unix & Linux, or other operating systems are responsible for providing applications to the users. Networking devices such as hubs, switches, routers, bridges, modems, firewalls, NT1s (an ISDN network termination device), and channel service units or data service units CSU/ DSUs are responsible to transfer information between computers. Cabling, such as copper or fiber cabling, is needed to connect the computers and networking devices so that information can be shared between components. Wireless communication also falls in this category.