This may be useful for granting users access to the internet by remotely updating their registry to know which DNS servers to use. If adapter is configured to use DHCP server, then exact name is not "Name Server" but "DHCPName Server". If there are several network adapters in computer, then location of "Name Server" as you have written is incorrect.
Basically DNS provides a name to number (IP address) mapping or translation, allowing internet users to use, easy to remember names, and not numbers to access resources on a network and the Internet.
Add a couple of hundred other addresses to your frequent site list, and you can see that host names are a lot easier on the brain than IP addresses.
But converting host names to IP addresses doesn’t happen by magic.
Method-I: The most predominant cause for this error to occur has been the hosts file issue in windows and mac.
This may be due to the outdated version of i Tunes software you are using.
Anyone that has ever used IP addresses knows that it’s tough enough to remember a few addresses on your local network, much less keep track of the addresses for remote systems you use often. Host names provide a more “friendly” way to name hosts, making it easier to remember host addresses.