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In the previous lectures, we saw the definition of computer networks, and in this lecture we will

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learn about local area network.

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As the name suggests, a local area network is usually restricted to spanning a particular geographical

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location, such as office building, a single department within a corporate office or even a home office.

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Back in the day, we couldn't put more than 30 workstations on the land and we had to keep up with strict

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limitations on how far those machines could actually be from each other because of technological advances,

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all that's changed now, and we are not nearly as restricted in regard to both land size and a distance

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land can span.

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Now, the meaning of the term workgroup in this context is slightly different than when the term is

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used in the DOE means.

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In this context, a work group is a set of devices with no security, association with one another.

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But for discourse we simply mean they are physically in the same network segment in a typical business

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environment.

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It is a good idea to arrange your land work groups along department divisions.

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For instance, you could create a work group for accounting, marketing, sales, and you can see on

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the screen that they have a different work groups.

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That is, they have under the same network segment physically.

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First, you don't need to know about the devices that are label, that is switch and hub and servers.

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We all are going to see this in that section of networking devices.

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Anyway, let us get back to the figure.

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Notice that there is a marketing work group and a sales work group.

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Now these are local area networks in their most basic form.

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Any device that connects to the marketing plan can access the resources of the marketing plan.

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In this case, the servers and the printer.

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But there are two problems with this.

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You must be physically connected to work.

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Groups plan to get the resources from it.

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And secondly, you cannot get resources from one line to another.

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For example, the pieces from marketing cannot access the servers which are connected to the sales.

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And now this becomes a problem if the sales PC wants to connect or have access to the printer.

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But in our case, in our figure, the printer is connected on this side of the network segment.

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So what to do?

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Well, in the next lecture we will see what is the solution to this problem.