Domain Name System (DNS) is the name resolution protocol for TCP/IP networks, such as the Internet. Client computers query a DNS server to resolve memorable, alphanumeric DNS names to the IP addresses that computers use to communicate with each other. See more in the DNS Server Overview for Windows Server 2008.
Looking for DNS content about Windows Server 2003? See
DNS on the Networking and Access Technologies TechCenter.
DNS Server in the Windows Server 2008 Technical Library