Building block of DNS that maps a single IP address to a DNS host name. 

Role that provides developers the ability to store data for directory-enabled applications without incurring the overhead of extending the Active Directory schema to support their applications. This feature was introduced in Windows Server 2008.

Feature offered by Read-Only Domain Controllers (RODCs) that enables an administrator to configure a user as the local administrator of a specific RODC without making the user a Domain Admins with far-reaching authority over all domain controllers in the entire domain and full access to the Active Directory domain data.

Dynamic update feature that places a timestamp on record, based on the current server time, when the IP address is added. This is part of the aging and scavenging process.

Special startup mode used to run an offline defragmentation.

Domain name limited to 15 characters that is maintained for legacy compatibility with older applications that cannot use DNS for their name resolution.

Enables the DNS database to be updated with the changed information when the Internet Protocol (IP) address of a host changes.

Specific server roles that work together to enable the multimaster functionality of Active Directory.

Zone necessary for computer hostname–to–IP address mappings, which are used for name resolution by a variety of services.

Complete DNS name used to reference a host’s location in the DNS structure, such as LUCERNEPUBLISHING.

Method of conserving bandwidth by transferring part of a zone.

Amount of time or delay it takes to replicate information throughout the network.

Command-line tool that is used to create, delete, verify, and reset trust relationships from the Windows Server 2008 command line.

Command-line tool that is critical for working with DNS on Server Core.

List of user or group accounts whose passwords should be stored on a particular Read-Only Domain Controller (RODC) or should not be stored on the specific RODC.

Resource record that is the functional opposite of the A record, providing an IP address-to-name mapping for the system identified in the Name field using the in-adrr.arpa domain name.

Mechanism to set up load balancing between multiple servers that are advertising the same SRV records. Clients will always use the record with the lower-numbered priority first. They will only use an SRV record with a higher-numbered priority if the lower-numbered priority record is unavailable.

Zone that answers queries in which a client provides an IP address and DNS resolves the IP address to a hostname.

Process of removing records that were not refreshed or updated within specified time intervals.

Special installation option that creates a minimal environment for running only specific services and roles. Server Core runs without the Windows Desktop shell, which means that it must be administered exclusively from the command line or by using Group Policy. This feature was introduced in Windows Server 2008.

Shared folder that exists on all domain controllers that is used to store Group Policy Objects, login scripts, and other files that are replicated domain-wide.

Length of time a record is valid, after which it needs to be reregistered.

Running dcpromo from the command line using a specially formatted text file to specify the necessary installation options.

Naming format that simplifies access to multiple services, such as Active Directory and email. A UPN follows a naming convention that can reflect the forest root domain or another alias that follows the format of username@domainname.

Process of replicating DNS information from one DNS server to another.