In Windows Server 2011 it is called Active Directory.
The directory database is controlled by a Network Operating System (NOS). And examples are Windows Server 2011, UNIX, and Linux.
window 2000 server domain controller and windows 2000 server member server in domain.
Domain Controller it is Microsoft Windows Server 2000/2003 directory server that provides access controls over users, accounts, groups, computers and other network resources. Domain Controller authenticate users and maintains directory services and the security database for a domain. without ADS it is not possible.
a domain controller (DCO) is a server that responds to security authentication requests (logging in, checking permissions, etc.) within the Windows Server domain
Domain Controller it is Microsoft Windows Server 2000/2003 directory server that provides access controls over users, accounts, groups, computers and other network resources. Domain Controller authenticate users and maintains directory services and the security database for a domain.
The Domain Controller (Server)
domain controller DC a domain controller (DC) is a server that responds to security authentication requests (logging in, checking permissions, etc.) within the Windows Server domain.
in Active Directory server roles, computers that function as servers within a domain can have one of two roles: member server or domain controller. A member server is a computer that runs an operating system in the Windows 2000 Server family or the Windows Server 2003 family, belongs to a domain, and is not a domain controller. Member servers typically function as the following types of servers: file servers, application servers, database servers, Web servers, certificate servers, firewalls and remote-access servers.
Server is a computer which serves files to other users or computers. A server can be a windows XP operating system also, but it does not have any securityDomain controller is a computer which controls other users or computers .A domain controller must have windows 2003 server operating system and need to configure as a domain. It has a Excellent security
True.
Yes its is located but replaced by another Smaller SAM database SAM Accounts on a Windows 2000 Server That Becomes a Domain Controller When you install Active Directory on a computer that is running Windows 2000 Server to create a domain controller, you can either create a new domain or configure the domain controller to contain a copy of an existing domain. In both cases, the existing registry key that contains the SAM database is deleted and is replaced by a new, smaller SAM database. The security principals in this database are used only when the server is started in Directory Services Restore Mode. The disposition of the security principals in the SAM database on the server is different in each case, as follows: If you create an additional domain controller in an existing domain, the security accounts in the existing SAM database on the server are deleted. The accounts from the existing domain are replicated to Active Directory on the new domain controller. If you create a new domain, the security accounts in the existing SAM database are preserved as follows: User accounts become user objects in Active Directory. Local groups in the account domain become group objects in Active Directory. The group type indicates a local group. Built-in local groups become group objects in Active Directory. The group type indicates a built-in local group. These groups retain their constant SIDs and are stored in the Builtin container.
Windows Server 2003, Web Edition