The abbreviation of DNS is DomainNameSystem. I think DNS is the very big change in the technology. If there is no DNS we have to remember the ip addresses of the websites it is impossible to remember more than 5 or 6 ip addresses so it is the big change in the technology. DNS will convert text into ip address before it is going to server because every web page in server has an address with out knowing that address it is not possible to retrieve the web page so DNS is very important technology.
Here I am going to tell how DNS working actually when we are sending request to server. I am taking example ,i am requested www.google.com from my system then how DNS working.
1.when i request www.google.com request the nearest DNS server (Naming Resolver) will convert into ip address.
2.It will check ip address in the cache of that DNS server(Naming Resolver) if it is found that will not go to google server instead the page in the cache will be returned to my system.
3.If my page not in the cache then it will go to the root server then it will ask do you know this ip address then it will tell to the Naming Resolver i know from which domain it is coming then it will return .com server ip address to the Naming Resolver.
4.Then Naming Resolver go the .com server we can call as top level domain server.It will tell to the Naming Resolver I know the ip address of google.com and returns ip address of the google.com to the Naming Resolver.
5.Then again it will go to the ip address given by top level domain server.Then it will search requested address in the second level domain server.It will find that address and returns the page in the address to the naming resolver.
Then that page returned to my system.This is how DNS system working.Thank you readers for reading article for getting good subject on DNS.
1.when i request www.google.com request the nearest DNS server (Naming Resolver) will convert into ip address.
2.It will check ip address in the cache of that DNS server(Naming Resolver) if it is found that will not go to google server instead the page in the cache will be returned to my system.
3.If my page not in the cache then it will go to the root server then it will ask do you know this ip address then it will tell to the Naming Resolver i know from which domain it is coming then it will return .com server ip address to the Naming Resolver.
4.Then Naming Resolver go the .com server we can call as top level domain server.It will tell to the Naming Resolver I know the ip address of google.com and returns ip address of the google.com to the Naming Resolver.
5.Then again it will go to the ip address given by top level domain server.Then it will search requested address in the second level domain server.It will find that address and returns the page in the address to the naming resolver.
Then that page returned to my system.This is how DNS system working.Thank you readers for reading article for getting good subject on DNS.
