| Subject | English | German |
| commun. | primary domain controller | Controller für die primäre Domäne |
| comp., MS | primary domain controller | primärer Domänencontroller (A computer running Windows NT 4.0 Server that authenticates logons and maintains the directory database for a Windows NT 4.0 domain. A primary domain controller is not used in a Windows 2000 domain. Instead, one domain controller is designated as the primary domain controller emulator for backward compatibility) |