What Is DNS?
Hi there in this Article you'll learn about a crucial part of the internet the domain name system or DNS so what is DNS well is the translation system that allows us humans to search the internet using language we're comfortable with without DNS the internet as we know it would not exist for example
you couldn't do your shopping online you have to drive to an actual store to buy your things there would be no way to stream music or videos to your smartphone and no way to video chat with a friend across the ocean or even across the street but what does DNS have to do with this the internet is made up of computers that are set up in large networks around the world
these networks are connected by a web of underground and in some cases undersea wires computers on the internet communicate with each other using strings of numbers called Internet Protocol or IP addresses IP addresses function like street addresses they identify where a computer is located on the internet and help guide the formation traveling between
computers now it's one thing for computers to communicate using strings of numbers but imagine if we humans had to memorize these seemingly random number strings for every single website we wanted to find not very
realistic huh well because of DNS we don't have to DNS translates the human friendly domain names that were comfortable using into the IP addresses the computers need to communicate with one another when you type a domain name in here web browser your browser and computer
determine if one of them already has two domains related IP address in their memory is it to domain that you recently visited like saying newspaper you look at everyday your browser May has toured the domain name and IP address and its memory and can display the website in a split-second if it don't rain it isn't found in local memory your computer takes the search
out to the internet were asked or Aquarius a series of DNS servers if they have the domain name in their memory or a database. DNS server that receives a query checks his memory for the domain name if it doesn't find the domain name and its memory it sends a query on to the next DNS
server to see if they can help as soon as the domain name is found on a DNS server that server Returns the domain name and its IP address to the requesting DNS server and on Down the Line until it arrives back at your computer each time a requesting DNS server receives a domain name and IP address the server stores the information in its memory so any future requests for the domain name can be against her more quickly once your computer has the IP address for the domain name your browser knows where to find it on the internet your browser uses your computer
to communicate with the server where the domain name has hosted and request any Associated files the host server returns to files which then display in your web browser our ability to use domain names to quickly
and easily retrieve websites and fly from the Internet is entirely dependent on this tightly integrated into yard line of communication so the next time you buy a pair of shoes online listen to some music on your smartphone or video chat with a friend on another continent remember it's not magic that let you do these things on the web its DNS
Thank you