Fully-Associated Topology and Mesh Topology

                                          Fully-Associated Topology

In this topology, all nodes are directly connected to each other as shown in figure:

Fully-Associated Topology

Thus, it is completely connected network with a separate physical link for connecting each node to the other node. The control is distributed with each Computer deciding its communication priorities. In this mode cost is high because more wires are needed to connect nodes but chances of failure are very less.

Let’s talk about the merits of fully-Associated Topology; Very Reliable. Each node of network need not have individual routing capacity. Communication is very fast between two nodes. It is robust because the failure of any one computer does not bring down the entire network. It provides security and privacy because each message send travels along a dedicated line.

Demerits:

Most Expensive networks. Adding more nodes will increase cost.

                     Mesh Topology

 

Mesh Topology

In mesh topology, each node is connected to more than one nodes of the system. In this way, there exist multiple paths between two nodes of the network. In case of failure of one path, the other one can be used.
A fully connected mesh topology is same as fully associated topology.
Fully-Associated Topology and Mesh Topology merits and demerits are same.