LAN Transmission Media

The communications medium is the medium across which data communications occur between two computing devices.

There are two categories of communications medium: wire medium and wireless medium. Wire medium uses a physical medium to transmit the data over, whereas a wireless medium uses electromagnetic waves to transmit the data, and do so through the air.

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Network Topologies

In terms of network implementation, a network topology is the physical layout of the network – how its cabling is mapped out. There are three ways a network can be physically laid out: as a bus, a star or a ring.

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Computer Networks

A computer network can be seen as a series of (two or more) interconnected computing devices (PCs, Servers and Printers). These devices are connected using some form of communications medium.

It does not matter whether the network is to play games or to facilitate world wide video conferencing, the general purposes of having computing devices networked are to:

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