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Windows Server 2012 Active directory Interview Questions and Answers

>How can you forcibly remove AD from a server, and what do you do later? ? Can I get user passwords from the AD database?
Dcpromo /forceremoval , an administrator can forcibly remove Active Directory and roll back the system without having to contact or replicate any locally held changes to another DC in the forest. Reboot the server then After you use the dcpromo /forceremoval command, all the remaining metadata for the demoted DC is not deleted on the surviving domain controllers, and therefore you must manually remove it by using the NTDSUTIL command.

In the event that the NTDS Settings object is not removed correctly you can use the Ntdsutil.exe utility to manually remove the NTDS Settings object. You will need the following tool: Ntdsutil.exe, Active Directory Sites and Services, Active Directory Users and Computers

>What are the FSMO roles? Who has them by default? What happens when each one fails?
Flexible Single Master Operation (FSMO) role. Currently there are five FSMO roles:
Schema master
Domain naming master
RID master
PDC emulator
Infrastructure master

>What is domain tree ?
Domain Trees: A domain tree comprises several domains that share a common schema and configuration, forming a contiguous namespace. Domains in a tree are also linked together by trust relationships. Active Directory is a set of one or more trees.
Trees can be viewed two ways. One view is the trust relationships between domains. The other view is the namespace of the domain tree.

>What is forests ?
A collection of one or more domain trees with a common schema and implicit trust relationships between them. This arrangement would be used if you have multiple root DNS addresses.

>How to Select the Appropriate Restore Method ?
You select the appropriate restore method by considering:
Circumstances and characteristics of the failure. The two major categories of failure, From an Active Directory perspective, are Active Directory data corruption and hardware failure.

Active Directory data corruption occurs when the directory contains corrupt data that has been replicated to all domain controllers or when a large portion of the Active Directory hierarchy has been changed accidentally (such as deletion of an OU) and this change has replicated to other domain controllers.

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