Internet refers to network of networks. In this network each computer is recognized by a globally unique address known as IP address. A special computer DNS (Domain Name Server) is used to give name to the IP Address so that user can locate a computer by a name.
For example, a DNS server will resolve a name http://www.w3ii.com to a particular IP address to uniquely identify the computer on which this website is hosted.
This tutorial has been prepared for the students as well as professionals to ramp up quickly. This tutorial is also easily understood by general person with an interest in becoming computer literate.
Before proceeding with this tutorial you should have a basic knowledge of Computers, which will help you in understanding this tutorial easily and quickly.