WHAT IS NETWORK TOPOLOGY?
Network It gives a pictorial representation or map of the way the different devices in the network are linked. It’s similar to a floor plan of a building and hence signifies a design of the community.
Bus topology Is a multipoint connection of apparatus. A long cable function as a backbone to connect all devices in a network.
Stations are connected to this bus by drop line. A tap is a connector between a fall line along with the bus. In a bus topology, there are some limitations to add stations on that, because sign traveling from one end of the bus gets weaker and weaker as it moves farther and farther. The advantages are easy installations and it needs less cabling than other topologies. It is difficult to add new nodes as it is created for a specific number of nodes. Bus topology is one of the first topology used in ancient LAN.
The example includes an Ethernet bus network.
A ring Topology has a dedicated point to point connection. When a system receives a signal then its repeater regenerates the bits and then invisibly into another device. Ring topology is also simple to install and each gadget is linked to only its immediate neighbors. The drawback of ring topology is a fracture in the ring can disable the entire network.
In this Topology, each device is connected to a central controller by a dedicated connection. This central controller is called the hub. Devices are not directly connected with one another. It doesn’t permit any direct traffic involving device to device. If a single device sends information to another device then it regards the hub then relay the information to its destination apparatus.
Star topology Is less expensive and here just a single link needs to connect 1 device with tons of additional device, so, less cabling needs to incorporate it. Another benefit is if one link fails then only that link is affected but all other links stay active. It is likewise easy fault identification. However, one big disadvantage is that there, if the heartbeat goes down then the entire network system will go down.
Example Includes the Ethernet star network.
In a mesh Topology, each unit is connected to every other device by dedicated point to point link. If the number of nodes is n then the required number of a link is (n-1). Every physical link permit communication in both manners. So we want n(n-1)/two no. Of link. Using a dedicated connection provides the facility to journey signal only between two devices. It mentions that the security constraints. It makes the error identification easy. If one link is broken then it does not affect other link or system. The disadvantages are setup and reconnection as every device is connected with another device directly. The huge number of cabling needs as a result. Hardware demand is high for every I/o port, and it is apparent that price will be also high to configure this topology.
The example Of mesh topology is the link of telephone regional offices in which each regional offices is required to connect every regional office.
The shrub Topology is normally utilized in a point-to-point network. It’s the look of an inverted tree. Active hubs are Utilized to link each branch of this tree to Its higher division. The Major advantage of this topology is that parts of the Network can work even in the event of a cable breakdown.