* Star
In star topology, every node (computer workstation or any other peripheral) is connected to a central node called a hub or switch.
* Ring
Each device present in Ring Topology is incorporated with a REPEATER.
* Mesh
Fully connected mesh topology:

A fully connected network is a communication network in which each of the nodes is connected to each other.
* Star
In star topology, every node (computer workstation or any other peripheral) is connected to a central node called a hub or switch.
* mesh (full)
The major disadvantage is that the number of connections grows quadratically with the number of nodes,as per the formula: c=n(n-1)/2
* Ring
Ring Topology: In this type of Topology, data is passed from one node to another in a series. Here each device has dedicated Point-to-Point connection, with only two devices present on either side of it.