Chapter Summary
A network is a system, or collection of systems, that facilitates the exchange of resources from one point to another. This is a fancy way of saying that a network is the sum of the parts connecting two or more points. Examples of networks include the subway, the highway system, the telephone system, and the Internet.
A network is made up of physical and logical components. The physical components are the cables and network hardware devices, such as switches. The logical components of a network are the frames and data carried by and across the network.
Networks have two points—the source and destination, also known as the origination and termination points (respectively).
There are three modes of transmission between origination ...
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