mplementing, Managing and Supporting Windows 2000 Network Infrastructure Concepts DNS in a Windows 2000 Network Infrastructure DNS Overview DNS is the name service for Internet addresses used to translate friendly domain names to numeric IP addresses. Microsoft's web page, http://www.microsoft.com translates to 207.46.130.149. A host computer queries the name of a computer and a domain name server cross-references the name to an IP address. Windows 2000 clients use DNS for name resolution and locating domain controllers for logon. In the DNS, the clients are resolvers and the servers are name servers. DNS uses three components: resolvers, name servers, and the domain name space. A resolver sends queries to a name server. The name server returns the requested information, a pointer to another name server, or a failure message, if the request cannot be satisfied. Resolvers Resolvers pass name requests between applications and name servers. The name request contains a query, such as the IP address of a Web site. The resolver can be built into the application or may be running on the host computer as a library routine. Name Servers A name server contains address information about other computers on tile network. Name servers are grouped into domains. Access to each computer in a given group is controlled by the same server. If the name server is not able to resolve the request, it can forward the request to another name server.

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