Active Directory Administration Tools

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Domain Functional Levels As you learned in free 70-297 test questions, domain functional levels (formerly known as domain modes) provide a way to enable domain-wide Active Directory features within your network environment. Four domain functional levels are available: Windows 2000 mixed (default), Windows 2000 native, Windows Server 2003 interim, and Windows Server 2003.
When you first install or upgrade a domain controller to a Windows Server 2003 operating system, the domain controller is set to run in
Windows 2000 mixed functionality. The Windows 2000 mixed functional level allows a Windows Server 2003 domain controller to interact with domain controllers in the domain running Microsoft Windows NT 4, Windows 2000, or Windows Server 2003.
The Windows 2000 native functional level allows a domain controller running the Windows Server 2003 operating system to interact
with domain controllers in the domain running Windows 2000 or Windows Server 2003. You can raise the functional level of a domain to Windows 2000 native if the domain controllers in the domain are ...
... all running Windows 2000 Server or later.
The Windows Server 2003 interim functional level allows a domain controller running the MCSE required exams operating system to interact with domain controllers in the domain running Windows NT 4 or Windows Server 2003. The Windows Server 2003 interim functional level is an option only when upgrading the first Windows NT domain to a new forest and can be manually configured after the upgrade. This functional level does not support domain controllers running Windows 2000.
Windows Server 2003 The Windows Server 2003 functional level allows a domain controller running the Windows Server 2003 operating system to interact only with domain controllers in the domain running Windows Server 2003. You can raise the functional level of a domain to Windows Server 2003 only if all domain controllers in the domain are running Windows Server 2003.

Forest Functional Levels Forest functional levels provide a way to enable forestwide Active Directory features within your network environment. Three forest functional levels are available: Windows 2000 (default) and Windows Server 2003 interim, and Windows Server 2003.
Windows 2000 When you first install or upgrade a domain controller to a Windows Server 2003 operating system, the forest is set to run in the Windows
2000 functional level. The Windows 2000 functional level allows a Windows Server 2003 domain controller to interact with domain controllers in the forest running MCITP study guides free download, Windows 2000, or Windows Server 2003.