In Windows Server 2003, this is the ability of an administrator to distribute certain administrative tasks to other individuals or groups. In terms of DNS, a portion of a domain namespace can be delegated to another server that will then be responsible for resolving name-resolution requests.
Device Manager
A tool included with Windows Server 2003 that can be used to manage hardware as well as troubleshoot hardware problems.
DHCP clients
Clients configured to automatically obtain an IP address from a DHCP server. By default, Windows 2000, Windows XP, and Windows Server 2003 clients are configured as DHCP clients.
DHCP database
Database that stores information about client leases.
display filter
Filter configured within Network Monitor after data has been captured to specify the type of traffic to display.
domain
An Active Directory hierarchy component. Domains define the administrative and security boundaries within an Active Directory hierarchy. A domain can be created by installing Active Directory.
domain controller
Computers that are used for storing directory data, user authentication, and directory searches. A computer can be configured as a domain controller by installing Active Directory.
domain name system (DNS)
System used to translate host names into IP addresses. DNS is included as a service with Windows Server 2003.
Dynamic Host Configuration Protocol (DHCP)
A protocol used to dynamically assign IP addresses to devices on a network. It can also be used to provide DHCP clients with optional parameters such as the IP address of the default gateway. DHCP in Windows Server 2003 can be integrated with DNS.
dynamic update
Feature that enables a DNS client to automatically register and update its own host record with a DNS server. It can be used in conjunction with DHCP so that clients can update their resource records when IP addresses change.