DNS (Domain Name System) is a hierarchical, decentralized system for assigning unique domain names to resources on the Internet. Domain names are easily remembered and can be translated into any language.
A domain name is a logical label assigned to a computer, server, or other resource.
Domain names are important for two reasons:
1. They are the foundation for the Domain Name System.
2. They are used to identify resources on the Internet.
DNS is a hierarchical system in which each node in the system has a copy of the entire database. The DNS system provides a means for computers to lookup the name of a resource by its domain name.
For example, if you want to access the website for the University of Michigan, you would type the domain name “michigan.edu” into your browser.
The Domain Name System also solves the problem of routing requests to the correct server. In the early days of the Internet, there was no way to automatically determine the address of a remote computer. The Domain Name System is responsible for assigning unique domain names to resources on the Internet. For example, the domain name “www.yahoo.com” is associated with the address 209.85.128.
112. When a user requests the website www.com, the Domain Name System queries computers in the 209.112 network for the website’s name.
