Advantages VS Disadvantage

Disadvantage of Ring Topology Failure of one computer can affect the total network Difficult to troubleshoot Adding or removing Computers disrupts the network A ring network requires more cable than a bus network. Star Topology In this type of topology all the computers are connected to a central device called a “hub" which may be a hub, a router or a switch. . This hub/switch is the central node and all other nodes are connected to the central node. The computers present in star topology cannot have a direct relation with each other. They have to be linked via hub. The minimum distance between node and hub is 100 meter. Advantages of Star Topology It is easy to prepare and connect. Failure of one computer does not affect the other. More nodes can be connected in it with it, propagation delay does not increase. It is easier to find faults in networks. Easy to troubleshoot. Easy to set up and modify. Disadvantage of Star Topology Failure of hub results in failure of complete network. Cost of installation is high. Performance and as well number of nodes which can be added in such topology is dependent on the capacity of the central device. Advantages of Mesh Topology Data can be transmitted from different devices simultaneously. This topology can withstand high traffic. Even if one of the components fails there is always an alternative present. So data transfer doesn't get affected. In the event that one of those nodes fails, network traffic can be directed to any of the other nodes. Expansion and modification in topology can be done without disrupting other nodes. Disadvantage of Mesh Topology 1. Installation and configuration is difficult. 2. Cabling cost is more. Tree Topology A tree network is a combination of two or more star networks connected together which involve a variety of single nodes connected to a central node. Multiple stars involve either a series or tertiary nodes attached to two or more secondary nodes,which are attached to the tree's primary trunk node. Experts may define a tree topology as a combination of star and bus topologies, where multiple elements are connected through a single lateral connection. Advantages of Tree Topology This topology is the combination of bus and star topology. This topology provides a hierarchical as well as central data arrangement of the nodes. As the leaf nodes can add one or more nodes in the hierarchical chain, this topology provides high scalability.The other nodes in a network are not affected if one of their nodes gets damaged or does not work.Tree topology provides easy maintenance and easy fault identification can be done. A callable topology. Leaf nodes can hold more nodes.Supported by several hardware and software vendors.Point-to-point wiring for individual segments.Tree Topology is highly secure.It is used in WAN.Tree Topology is reliable. Disadvantage of Tree Topology Tree Topology has a whole basic structure that relies heavily on the main bus cable if it breaks the whole network is crippled. As more and more nodes and segments are added, the maintenance becomes difficult. Scalability of the network depends on the type of cable used. It has a higher cabling cost in setting up a tree structure.

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