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   Data Network

A data network is a system that transfers data between network access points (nodes) through data switching, system control and interconnection transmission lines. Data networks are primarily designed to transfer data from one point to one or more points (multipoint). Data networks may be composed of a variety of communication systems including circuit switches, leased lines and packet switching networks. There are predominately two types of data networks, broadcast and point-to-point.

This figure shows the basic types of data networks. This diagram shows that the types of data networks range from very short range personal area networks (PANs) to wide area data networks (WANs). This example shows that a user is transferring data between a PDA and a computer within their personal area network (PAN) at their office in Chicago. This data can be transferred through their company's local area network (LAN), through a city wide metropolitan area network (MAN) and through a wide area network (WAN) so it can reach other locations such as New York. When the data reaches New York, it is transferred back to a fiber distributed data interface (FDDI) local area network (LAN) so it can reach its destination computer.

Data Network Type Diagram

 

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