The main advantage of peer to peer network is that it is easier to set up and use than a network with a dedicated server. In peer-to-peer networks all nodes are act as server as well as client therefore no need of dedicated server. When demand on the system increases, the total capacity of the system also increases. Robustness of the peer -to-peer network increases when duplicate data arrive on multiple peers. Here is some points that describe that the peer to peer network is less expensive. Peer to peer network is easier to set up and use this means that you can spend less time in the configuration and implementation of peer to peer network. It is not require for the peer to peer network to use the dedicated server computer. Any computer on the network can function as both a network server and a user workstation.