Question

explain domain name system in simple words

Answer 1

The Domain Name System (DNS) is asystem used to convert a computer's host name into an IP address on the Internet. For example, if a computer needs to communicate with the webserver example.net, your computer needs the IP address of the web serverexample.net. ... There are later RFC which define changes to the system.

Answer 2

Basically all the web pages on the internet have unique addresses which are represented in dotted decimal notation such as 172.16.254.1. Now it's difficult to remember such a number for all the sites you visit. But you can easily remember a name like google.com or youtube.com. The DNS (Domain Name System) maps this name to its dotted decimal notation equivalent.

Eg: say 236.152.168.124 is the dotted decimal notation for google

so when you type google.com in your browser, the DNS gets the dotted decimal notation equivalent to google.com which is 236.152.168.124 in this case.

Hope this helps you:)