Networking is the process of linking two or more computers together. The linking is achieved by using optical fibers, ethernet,wireless LAN or Power line communication. TCP/IP is the commonly used protocol in both the wired and wireless networks.Based on the area covered by the network, it can be a Local Area Network(LAN),Wide Area Network(WAN),Personal Area Network(PAN) or Virtual Private Network(VPN). When different systems are connected, they form some relationships to each other. Either one server computer is connected to several client computers in the same network, or all the peer systems are simply connected together. In the peer-to-peer system, the problems of one computer will affect the other ones. In the case of a client-server architecture,the other computers are not affected even when one of the clients is affected. The server will provide the data or resources. Now the client-server system is considered to be the standard all over the world.