network topologies
bus topolgy
ring topology
star topology
mesh topology
it is the simplest network topology.it consist of single central cable known as bus.all the devices are connected to the bus along its length to communicate with each other.
in mesh topology all the network nodes are connected to all other nodes.messages sent on a mesh network,can take any possible path from source to destination.
it is shaped just like a ring.it is like a bus with both ends connected together.all the messages travel in same direction .
in star topology all the nodes are connected to a central devices called switch or hub .a switch can bo connected to another switch to expand the network
advantages
lowest cost topology
easy to add computer
easy to setup as compared to star
suitable for small network
disadvantages
if bus is damaged at any point,the entire network stops working
difficult to detect and fix fault
advantages
it is most reliable network topology
alternative paths are available
disadvantages
most expensive topology
difficult to implement
difficult to add new computer
advantages
high network performance
server or swith is not require
all computer have equal opportunity
disadvantage
if ring is broken at one point,the entire network stops functioning
detection of faults is difficult
expansive than star and bus
advantages
provide fast communication between computer
easy to connect new devices to the network
easy to detect and fix faults
disdavantage
at least one switch is required for connecting two computer
lengthy cable is required
costly to implement