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PPT : Local Area Network Topology

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Networks:
A group of two or more computer systems linked together. There are many types of computer networks, including:
* local-area networks (LANs) : The computers are geographically close together (that is in the same building). (# relevant for Ecolog-Net)
* wide-area networks (WANs) : The computers are farther apart and are connected by telephone lines or radio waves.
* campus-area networks (CANs): The computers are within a limited geographic area, such as a campus or military base.
* metropolitan-area networks (MANs): A data network designed for a town or city.
* home-area networks (HANs): A network contained within a user’s home that connects a person’s digital devices.

Ring structure
-net expansion limits
-by cable interrupt the net precipitates
-complicated access methods
-easy to install
-simply expandable
-short cable lengths
Bus structure
Disadvantages
Advantages
Topology/structure

A simple network consists of at least two computers, which are connected by a direct connection (crossover cable) or with a Hub or Switch.
A common connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports. When a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

Switch:
In networks, a device that filters and forwards packets between LAN segments.

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