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Tuesday, December 4, 2007

Computer Networks and Topology

Network

A collection of computers, servers, mainframes, network devices, peripherals, and/or various other devices connected to one another allowing for data to be shared and used. A great example of a network is the Internet, connecting millions of people all over the world together.

Below is an example image of what a home network or small office network may look like. As can be seen below, this network is setup to enable all computers and other devices with network abilities, such as the Tivo, to communicate with each other as well as share the single Internet connection.

Bus topology

A type of network setup where each of the computers and network devices are connected to a single cable or backbone. Below is a visual example of a simple computer setup on a network using the bus topology.



Ring topology

Also known as a ring network, the ring topology is a type of computer network configuration where each network computer and device are connected to each other forming a large circle (or similar shape). Each packet is sent around the ring until it reaches its final destination. Today, the ring topology is seldom used. Below is a visual example of a simple computer setup on a network using a ring topology.



Star topology

Also known as a star network, a star topology is one of the most common network setups where each of the devices and computers on a network connect to a central hub. A major disadvantage of this type of network topology is that if the central hub fails, all computers connected to that hub would be disconnected. Below is a visual example of a simple computer setup on a network using the star topology.

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