Manual NetEmul
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Chapter 2. Introduction in computer networks

The main concepts
Network devices

The main concepts

The computer network is a connection of two or more computers for solution of following tasks:

Connection, as a rule, forms by means of a cable, but there are also other, more difficult resources.

The computer network is a collection of computers and the various devices providing an informational exchange between computers in a network without usage of any intermediate media.
Creation of computer networks is called by practical requirement of users of the computers remote from each other for usage of the same information. Networks give to users possibility not only fast information interchange, but also teamwork on printers and other peripheral units, and even simultaneous document processing.

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