I am still very new to networking but also working through windows server based training at this time. My question is very basic: What is the PDC role within the windows server and is the concept of PDC/BDC still used in windows server networking today? I have read that the Multi-master replication model pretty much kills the PDC/BDC concept... is this true?

hi, PDC Emulator: The PDC emulator is a domain controller that advertises itself as the primary domain controller (PDC) to workstations, member servers, and domain controllers that are running earlier versions of Windows. For example, if the domain contains computers that are not running Microsoft Windows XP Professional or Microsoft Windows 2000 client software, or if it contains Microsoft Windows NT backup domain controllers, the PDC emulator master acts as a Windows NT PDC. It is also the Domain Master Browser, and it handles password discrepancies. At any one time, there can be only one domain controller acting as the PDC emulator master in each domain in the forest.please look at here ;http://www.petri.co.il/understanding_fsmo_roles_in_ad.htmhttp://en.wikipedia.org/wiki/Primary_Domain_Controllerhttp://support.microsoft.com/kb/324801/en-us regards,Mumin CICEK | Exchange - MVP | www.cozumpark.com | www.mumincicek.com