Introduction to DNS

A bit about DNS

What is DNS and Why is DNS?? Answer for these 2 questions may clear all the basic doubts regarding DNS. Domain Name System aka DNS is a system that translates the domain name or host name to an IP address. This system uses a database which contains several records to translate a domain or host name to an IP address. The records in that database contains the mapping information's. There are different types of records in it.This databases are stored in a dedicated server and those servers are known as DNS servers. This is what is DNS.. :).

Then the second part why is DNS?? Actually why there is a need for DNS?? Can you remember 216.58.220.46 instead of www.youtube.com or 31.13.79.246 instead of www.facebook.com? Then there is the answer for it. This is the need of DNS. Its a fact that humans can't remember such long numbers of different patterns. Use of phone-book to store contact details of different persons is a good example. Actually whats in it? Its is just mapping of name and pone number.Yes, like that there is only domain names and IP addresses (and some information's regarding it we will see about those things later) are present in a DNS database. DNS makes us easier to remember addresses of different websites easily. It is true that we are surfing on Internet without actually knowing about the IP address of any page or site. You may even don't know whats the IP of this page now you are looking at..:). Thus DNS plays a crucial role in Internet. That's all a bit about DNS you can surf on net for more or can ask me...:)