A topology is a way to connect different nodes in a network. We can connect computers in many
different ways with the help of cabling. Below figure reveals different topologies to connect
devices in a network. In a bus topology different types of connectors or transceivers are used to connect the cables. For example in 10Base2 each device connects to a single strand of coaxial cable through a vampire tap. This device taps into the coaxial cable so that it can provide the physical connection from a network device to the single strand of cable. In a Ring topology each device connects to the next one in a ring like device one connects to device two, device two connects to device three and so on, finally last device connects back to device one. Ring topology can be categorized in two classes: Single Ring and Dual Ring. Dual Ring technique is used when we need redundancy so that if one of the devices fails in a ring the ring can wrap itself to form a single functional ring topology.  Physical Versus Logical Topologies Meshing |
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