Topology

Topology

1. Star Network

   • What is it: In a star network each device on the network has its own cable that connects to a switch or hub. A hub sends every packet of data to every device, whereas a switch only sends a packet of data to the destination device.
   • Advantages 1) As compared to Bus topology it gives far much better performance, signals don’t necessarily get transmitted to all the workstations. A sent signal reaches the intended destination after passing through no more than 3-4 devices and 2-3 links. Performance of the network is dependent on the capacity of central hub. 2) Easy to connect new nodes or devices. In star topology new nodes can be added easily without affecting rest of the network. Similarly components can also be removed easily.
   • Disadvantages 1) Too much dependency on central device has its own drawbacks. If it fails whole network goes down. 2) The use of hub, a router or a switch as central device increases the overall cost of the network. 3) Performance and as well number of nodes which can be added in such topology is depended on capacity of central device. Keep Reading :

2. Mesh Network

   • A mesh network is a network topology in which each node relays data for the network. All mesh nodes cooperate in the distribution of data in the network. Mesh networks can relay messages using either a flooding technique or a routing technique.
   • Advantage 1) A broken node won’t distract the transmission of data in a mesh network. Each node is connected to several other nodes which make it easier to relay data. A broken device will be ignored by the signals and will then find a new one that is connected with the node.
   • Disadvantage 1) Maintaining mesh networks can be very hard to manage. It requires continuous supervision because of the redundancy present in the network. Skilled network administrators will find it easy to manage this kind of topology.

3. What is a Topology ? The way in which constituent parts are interrelated or arranged.