Changes

DNS由许多服务器和数据库组成，通过在各种高速缓存存储器中进行一系列查找，将[[Domain Name|域名]]配置成[[IP Address|IP地址]]。域名系统是一个分层排列的分布式数据库；其目的是在互联网服务（网络、电子邮件等）和用于唯一标识互联网上任何一台给定机器的数字地址（IP地址）之间提供一个抽象层。DNS各种信息与域名结合起来，最重要的是，将对于人类而言有意义的域名转化为可以定位指定目标的数字标识。

DNS由许多服务器和数据库组成，通过在各种高速缓存存储器中进行一系列查找，将[[Domain Name|域名]]配置成[[IP Address|IP地址]]。域名系统是一个分层排列的分布式数据库；其目的是在互联网服务（网络、电子邮件等）和用于唯一标识互联网上任何一台给定机器的数字地址（IP地址）之间提供一个抽象层。DNS各种信息与域名结合起来，最重要的是，将对于人类而言有意义的域名转化为可以定位指定目标的数字标识。

==How Does It Work?==

== DNS的工作原理是什么？==

The DNS makes it possible to assign domain names in a meaningful way to Internet resources as well as to users, regardless of the entity's location. As a result, the WWW hyperlinks remain consistent, even for mobile devices. A domain name is an easy way to remember an address, but that needs to be converted to its numerical, IP format. <ref>[http://www.modemhelp.net/faqs/dns.shtml About DNS]</ref>

DNS使人们能够将域名以有意义的方式分配给互联网资源以及用户，而与实体的位置无关。因此，即使是对于移动设备而言，“WWW”超链接也得以保持一致。人们通过域名更加容易记住一个地址，但是连接到互联网时，这个域名需要被转化为相应的数字形式，即IP格式。<ref>[http://www.modemhelp.net/faqs/dns.shtml About DNS]</ref>

Coordination across the Internet is maintained by means of a complex authoritative root system known as the [[TLD|Top Level Domain]] (TLD), as well as the DNS  and other smaller name servers responsible for hosting individual domain information. For each domain, the DNS spreads the responsibility by mapping the domain names and assigning them into IP addresses, and vice-versa. This is accomplished through authoritative name servers which have been designated for each domain. Each authoritative name server is responsible for its own particular domain, but it has the authority to assign new authoritative name servers to any  of its sub-domains. The DNS is able to store many types of information, even the mail server lists for a specific domain. The DNS is a core element which ensures the functionality of the Internet through its distributed keyword-based redirection service.  

Coordination across the Internet is maintained by means of a complex authoritative root system known as the [[TLD|Top Level Domain]] (TLD), as well as the DNS  and other smaller name servers responsible for hosting individual domain information. For each domain, the DNS spreads the responsibility by mapping the domain names and assigning them into IP addresses, and vice-versa. This is accomplished through authoritative name servers which have been designated for each domain. Each authoritative name server is responsible for its own particular domain, but it has the authority to assign new authoritative name servers to any  of its sub-domains. The DNS is able to store many types of information, even the mail server lists for a specific domain. The DNS is a core element which ensures the functionality of the Internet through its distributed keyword-based redirection service.