How many Network Topologies?
Network Topologies
Topology of a network is a geometric representation of the relationship among the interconnected devices.
There are four basics Network Topologies.
- Bus Topology
- Star Topology
- Ring Topology
- Mesh Topology
Bus Topology
Bus Topology
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- A Bus Topology connects all devices of the network through a single common cable having exactly two ends point.The cable is called backbone of the topology.
- Bus Topology offers a simple way to connect devices.
- All of the devices of the network are connected to common transmission medium which has exactly two endpoints.
- In this simple form of networking,failure of any single device does not affect other devices connected with the cable.
- However,if there is some problem in the shared communication cable,then all other devices can stop functioning.
Star topology
Star Topology
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- A Star topology connects all devices using point to point connections with cables to central point.The Central point is known as Hub or Switch.
- The central device controlls all the traffic.Therefore,devices can transfer data to each other only through the central point.
- It is easy to install and reconfigure.
- Star Topology cosumes more cable than the bus topology.
- However,if there is some problem in a cable,then only the respective computer gets disconnected from the network.
- On the other hand if there is some problem in Hub or Switch,then whole network become dead.
Ring Topology
Ring Topology
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- A Ring Topology connects a computer with exactly two other computers forming a ring of computers.
- Acomputer can send data to its immediate neigbour.A ring can be undirecional or biderectional.
- In a undirectional ring topology,data is sent either clockwise or anticlockwise.
- In a biderectional ring topology,data can travel in any direction.
- A faliure of connection between two computers may down the whole network.
- Unlike star topology,it does not require a central device to manage the connectivity between the devices.
Mesh Topology
Mesh Topology
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- Mesh Topology connects all devices with each other through a direct link.
- As compered to ring topology,data may reach its destination quickly.
- The mesh topology is an expensive topology in terms of cable cost as it uses a lengthy cable to connect computers as compared to the cable used in other topologies.
- However,the mesh topology is more reliable as it offers point-to-point connection.
- It is also considered more secure data travels only between a sender and a receiver.
THE END
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