DN

QUERY Browser Where is don’t know don’t know is at . . . Type Resolver Local Server Root Server Org Server tnscert.org Server ask them ask them Figure .

workflow of basic DNS Web Server Web server is a program running on dedicated machine which handle the queries of www enduser. Server is used to host the websites and to deliver the contents of websites using HTTP. While typing the URL in browser, the browser send the URL to DNS. After getting an IP address from DNS, It sends the request to the web server with IP address .

Now the content of websites appear on browser. associated with that specific domain. Until the query is solved it is passed to next level domains. Finally, the IP address is detected and the corresponding record is sent to the resolver.

Then the resolver returns the record back to the computer browser Now the user can view the webpages for the detected IP