.AD Domain General FAQ Andorra FAQ - What is DNS?
- DNS (Domain Name Server) is the system used in Internet to be able to assign and universally use unequivocal names to refer to systems connected to the net. Thus both human users and applications can used DNS names instead of the numeric addresses of the IP net. This represents great advantages, among others the fact that it is easier and less burdensome for us to use names and not
numbers and it allows an organization to make the name of machines, services, email addresses etc independent from the specific number addresses which working systems may have at a given time in function of changing elements such as the topology of the net and the provider of access to Internet.
Technically DNS is an immense data base distributed hierarchically throughout Internet: there are innumerable servers which interact among themselves to find and provide for the customer applications which consult them the translation of a name to its associated PI address, to which the desired connexion may be made. Each part of the data base has a replica in at least two servers and this
ensures the proper redundancy factor.
The reason which motivated the development and implementation of DNS in Internet was the great growth in the number of machines connecred. Previously, the link between numbers and IP addresses was made via lists kept centrally is a single file (Host.txt) which had to be constantly updated with each new system connected up and to be present in all the computers connected to Internet.
The maintenance of this system became unviable when the number of connected systems reached a few thousand in the mid 1980s.
- What is a .ad domain?
- .Ad domain names are reserved for business or individual entities within Andorra.
Source: www.nic.ad
|
|
