U

  • Article

  • universal group
    A group that can contain members from any domain and can be granted permissions to resources in any domain in the current domain forest.

  • update sequence number
    A type of identifier that is used to control replication between domain controllers in Windows 2000 and Windows Server 2003.

  • UPN
    See user principal name.

  • user principal name
    A logon name type of a user on a Windows 2000 or Windows Server 2003 network. The user principal name consists of the user object name used in Active Directory, followed by the at symbol (@) and then, typically, the Domain Name System parent domain. For example, JeffSmith in the Fabrikam.com domain tree might have the user principal name jeffsmith@fabrikam.com.

  • USN
    See update sequence number.