The Domain Name System (DNS) is a sequential naming system for computers, services, or resources connected to an Internet or a private network . It collects various information with the domain nameassigned to the participant . Most importantly, it transforms domain names meaningful to humans into numeric (binary) identities associated with networking devices for the purpose of identifying and addressing these devices around the world. An often used adage about the domain name system is that it translates human-friendly computer hostnames to IP addresses as “phone books”for the Internet . For example, www.example.comAfter translation it becomes 126.96.36.199 . The domain name system makes it possible for a group of Internet users to specify the domain name ina meaningful way no matter where the user is. Because of this, the World Wide
Web (WWW) hyperlinks and Internet connectivity information remains constant and neutral even if the current Internet routing system changes or the user uses a mobile device. Remembering Internet domain names is easier than memorizing IP addresses like 188.8.131.52 (IPv4) or 2001: db8: 1f70 :: 999: de8: 7648: 6e8 (IPv6) . People regardless of the URL and e-mail address Create and take advantage of how the machine (server) will find them.
The domain name system distributes the responsibility of determining the domain name and finding the IP address of those names by specifying the authoritative name servers . Authoritative name servers are responsible for their particular domains and in turn they can define other authoritative name servers for their sub-domains. This mechanism has made the denial of the need for a central register to distribute DNS, tolerate errors, and avoid frequent advice and updates.
In general, the domain name system also stores other information such as a list of mail servers that accept email for a given Internetdomain . The domain name system is an essential component of the Internet facility due to providing a worldwide distributed keyword- based redirection system. Other identifiers such as RFID tags, UPC codes, international characters in email addresses and host names, and a variety of other identifiers can potentially use DNS.  Thedomain name system also defines the technical underpinnings of the functionality of this database service. For this purpose it is the DNS protocol for Internet Protocol Suite(TCP / IP) defines a detailed description of the data structures and communication exchanges used in DNS as parts. The DNS protocol was developed and defined in the early 1980s and made public by the Internet Engineering Task Force