| Subject | English | Welsh |
| comp., MS | Active Directory Domain Services | Gwasanaethau Parth Active Directory (The Microsoft Windows based directory service. Active Directory Domain Services stores information about objects on a network and makes this information available to users and network administrators) |
| comp., MS | Active Directory Service Interfaces | Rhyngwynebau'r Gwasanaeth Active Directory (A directory service model and a set of Component Object Model (COM) interfaces. ADSI enables Windows applications and Active Directory clients to access several network directory services, including Active Directory) |