The term "topology" is used to describe the way in which computers are connected together on a computer network. Popular network topologies include bus, star and ring, but it is possible for two or more basic topologies to be combined on a single network, to form what is known as a hybrid topology.
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A star-bus topology, as the name suggests, involves several star topology networks linked by a common connection, known as a busbar or bus for short. If a single computer on the network fails, the remainder can continue running unhindered. But if the hub -- a component that allows data sharing by all devices connected to it -- at the centre of any of the star networks fails, all of the computers on that star become inaccessible.
In a starring topology, computers are wired to form a ring network and, once again, connected to a central component. A process known as "token passing" allows the network traffic between segments of a starring topology to be greater than that on a star-bus topology.
Many research and education networks around the world rely on hybrid topologies, according to the Open Grid Forum. Hybrid topologies provide computer applications with guaranteed, reliable and reproducible network services.
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