In computer networking, topology refers to the layout of connected devices. Network topologies can be physical or logical. Physical topology means the physical design of a network including the devices, location and cable installation. It defines how the systems are physically connected. Several physical physical topologies are in for networks today. Some of the common include the bus, ring, tree, and mesh. More complex networks can be built as hybrids of two or more of the above basic topologies. The logical topology defines how the systems communicate across the physical topologies. The two most common types of logical topologies are broadcast and token passing.
The factors that decide which topology we should chose are::
Cost is a factor that plays an important role for the decision of topology. If we want to creat a network for 4-5 computer, we should not expense very much in network.
what is the size of the network that we need to make and is it possible in that kind of topology.
Bandwidth capacity ::
The required speed of the network that can be taken care by any particular topology
Ease of installation ::
It is easy to install the network using selected topology.
Easy of fault finding and maintenance ::
if we have a network we will definitely getthe problem also, so will it be easy for network administrator to identify the problem and give the solution with ease and least possible time