... Domain Structure Blueprint PDF) . The chart has beenadopted from the organizational chart of a major U.S. city, and we will use itthroughout the book to see examples of both logical domain structure ... decentralizedadministration or controlled delegated responsibility. The Windows NT SAM, forexample, can only be written to at the primary domain controllers (PDC). Copies ofthe SAM on the backup domain controllers ... structure also allows subsidiaries operating under the same Internet rootto similarly extend the hierarchy. For example: mcnippon.mcity.orgis a perfectlylegitimate scenario for a domain controller...