Domain Name System (DNS)

Domain Name System (DNS), which is composed of the parser and domain name servers. Domain name server is the preservation of all hosts in the network and the corresponding IP address of the domain name, and has converted to IP address of the domain name server functionality. Which must correspond to a domain IP address, IP address does not have a domain name. Domain name system similar to the hierarchical structure tree. Domain name server for the client / server mode, the server side, it is mainly in two forms: the main server and forwarding server. Mapped to the IP address of the domain name of the process is called "domain name resolution." In the Internet domain names and IP addresses on a one to one between (or many to one), the domain name though for people to remember, but the machine only to each other between the IP address of conversion between them as domain name resolution, domain name by special resolution required to complete the DNS server, DNS server is the domain name resolution. DNS name for the Internet and other TCP / IP network, through a user-friendly name to find the computer and services. When the user input in the application DNS name, DNS service can resolve this name and other related information, such as IP addresses. Because, when you enter the URL in the Internet, through systematic analysis of DNS to find the corresponding IP address, so as to access. In fact, the domain name is the final point to IP.