Abstract
This chapter explores the Domain Name System (DNS), a method of creating hierarchical names that can be resolved to IP addresses (which, in turn, are resolved to MAC addresses). The chapter explains the basis of DNS and compares it to the alternative naming systems. It also describes how the DNS namespace is created and resolved to an IP address throughout the Internet or within a single organization. DNS is the backbone of the Windows network. Without DNS, Active Directory would cease to function. When it comes to Active Directory, DNS does much more than simple name resolution. It stores information about LDAP resources, Global Catalog resources, as well as other resources (such as SIP servers) within environment. In addition, it also discusses the two additional services: Windows Internet Naming Service (WINS) and Dynamic Host Configuration Protocol (DHCP), two common services used on Transmission Control Protocol/Internet Protocol (TCP/IP) networks.
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