DNS SERVER

 

DNS SERVER

Right now you are using the DNS server without knowing what it is because you are using internet now.
Without the help of DNS you cannot use the internet.
Let us see it via this post...

What is DNS?

DNS- Domain Name System
It is apt to say that DNS is the computer's GPS for the internet.
DNS is a protocol for computers to exchange data on the internet.
The main job of the DNS is to convert domain name into an Internet Protocol (IP) address.
For example, converting domain name "digitalnativeengg.blogspot.in" into IP address "70.42.251.42"
The internet use an IP address for routing data from one device to the other or vice versa.
Direct routing with IP address is a complex task so we are using DNS severs.

DNS SERVER:

 

DNS server contains book of IP address and it maps domain name with suitable IP address.
If you searching anything in search engines or sending e-mail, then it means you are using DNS server.
It converts your domain name into IP address of that domain, so that it is easy for you to get into that site.
The name of this process is called DNS name resolution.
Without this DNS server the whole world of internet will ruin.

Is there only one DNS server? 

 

No, more number of DNS servers are available worldwide.
If there is only one DNS server the data storage may be insufficient.
And also failure in the server makes the data inaccessible.
To avoid this number of DNS servers are available.
The services are distributed among these servers.
Each server is allocated with certain area and it takes control of that area.
If some services not come under a DNS server then it ask other DNS server and send appropriate service to the user.

How does your computer know which DNS server you should use?

While using internet you must need the help of Modem or Wi-Fi network.
The modem or Wi-Fi router also have network address that assign one or more DNS server to your device which is nearby your home.
In this way your device cab translate DNS name to IP address.