Forest root domain
The forest root domain.
Domain Controller
No, you do not. You only install Active Directory if the system is going to be a domain controller. If it is a member server or a standalone server Active Directory should not be installed.
Default Domain Policy and Default Domain Controller Policy
, the server hosting the replica of Active Directory database is called Domain Controller. In it's database is all information about all objects, that exist in particular Active Directory domain.
The Active Directory database is stored on each domain controller in a file called NTDS.DIT
Active Directory is called active bacause it is actively updating it's data through replication from differnt sites and other domain controllers with in the network
In Windows Server 2011 it is called Active Directory.
NTDS.DIT
the Domain is called as the security boundary with in the active directory. A Windows domain is a logical group of computers running versions of the Microsoft Windows operating system that share a central directory database. domain governs the way user access resources of the network
Administrative domain.
the centralized directory database in the domain model is NTDS.DIT(directory information tree) but for the local sstem not connected to domain is SAM
A simple 2003 installed server in domain is known as the Member server. When we install AD on it then It becomes Domain Controller.