Windows NT operates in a domain structure. Every user in one particular domain adheres to the same body of global rules and privileges.
Windows NT can be configured into one of three domain models: the single domain model, the master domain model, and the multiple master domain model.
Windows NT server can play one of three roles within these domains. Windows NT server can be configured as a PDC (primary domain controller), a BDC (backup domain controller), or a member server.
A single Windows NT PDC is capable of accommodating 26,000 users.
Member servers are optimal as application servers in environments where they risk moving from one domain to another.
Before version 5.0 of Novell NetWare, NetWare's default protocol was IPX/SPX. NetWare versions 5.0 and higher now use TCP/IP as the default protocol.
Novell's tree directory structure is considered the predecessor to Microsoft's Active Directory.
To operate Windows NT and NetWare in a mixed environment, Gateway Services for NetWare must be configured on the NT server.