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Thursday, December 11, 2008

Technical Interview Questions – Active Directory :

1. What is Active Directory?
Ans:
Active Directory is a hierarchical collection of network resources that can contain users, computers, printers, and other Active Directories.

2. What is LDAP?
Ans: Lightweight Directory Access Protocol. LDAP is an Internet standard protocol used by applications to access information in a directory.

3. Can you connect Active Directory to other 3rd-party Directory Services? Name a few options.

Ans:

4. Where is the AD database held? What other folders are related to AD?

5. What is the SYSVOL folder?

Ans: The SYSVOL folder stores the server's copy of the domain's public files. The contents such as group policy, users etc of the sysvol folder are replicated to all domain controllers in the domain. The sysvol folder must be located on an NTFS volume.

6. Name the AD NCs and replication issues for each NC

7. What are application partitions? When do I use them

8. How do you create a new application partition

9. How do you view replication properties for AD partitions and DCs?

10.What is the Global Catalog?

Ans: The global catalog is a distributed data repository that contains a searchable, partial representation of every object in every domain in a multidomain Active Directory forest. The global catalog is stored on domain controllers that have been designated as global catalog servers and is distributed through multimaster replication.

11.How do you view all the GCs in the forest?

12. Why not make all DCs in a large forest as GCs?

13. Trying to look at the Schema, how can I do that?

14. What are the Support Tools? Why do I need them?

15. What is LDP? What is REPLMON? What is ADSIEDIT? What is NETDOM? What is REPADMIN?What are sites? What are they used for?

16. What's the difference between a site link's schedule and interval?

17. What is the KCC?

Ans: The Knowledge Consistency Checker (KCC) is a built-in process that runs on each domain controller and regenerates the replication topology for all directory partitions that are contained on that domain controller. The KCC runs at specified intervals of every 15 minutes by default and designates replication routes between domain controllers that are most favorable connections that are available at the time.

18. What is the ISTG? Who has that role by default?

19. What are the requirements for installing AD on a new server?

20. What can you do to promote a server to DC if you're in a remote location with slow WAN link?

21. How can you forcibly remove AD from a server, and what do you do later? • Can I get user passwords from the AD database?

22. What tool would I use to try to grab security related packets from the wire?Name some OU design considerations.

23. What is tombstone lifetime attribute?

24. What do you do to install a new Windows 2003 DC in a Windows 2000 AD?

25. What do you do to install a new Windows 2003 R2 DC in a Windows 2003 AD?

26. How would you find all users that have not logged on since last month?

27. What are the DS* commands?

28. What's the difference between LDIFDE and CSVDE? Usage considerations?

29. What are the FSMO roles? Who has them by default? What happens when each one fails?

30. What FSMO placement considerations do you know of?

31. I want to look at the RID allocation table for a DC. What do I do?

32. What's the difference between transferring a FSMO role and seizing one?Which one should you NOT seize? Why?

33. How do you configure a "stand-by operation master" for any of the roles?

34. How do you backup AD?

35. How do you restore AD?

Ans: Active Directory restore can be performed in several ways. Replication synchronizes the latest changes from every other replication partner. Once the replication is finished each partner has an updated version of Active Directory. There is another way to get these latest updates by Backup utility to restore replicated data from a backup copy. For this restore you don't need to configure again your domain controller or no need to install the operating system from scratch.

36. How do you change the DS Restore admin password?

Ans: If Windows 2000 Service Pack 2 or later is installed on your computer, you can use the Setpwd.exe utility to change the SAM-based Administrator password.

To do this:

1. Log on to the computer as the administrator or a user who is a member of the Administrators group.

2. At a command prompt, change to the %SystemRoot%\System32 folder.

3. To change the local SAM-based Administrator password, type setpwd, and then press ENTER. To change the SAM-based Administrator password on a remote domain controller, type the following command at a command prompt, and then press ENTER
setpwd /s:servername
where servername is the name of the remote domain controller.

4. When you are prompted to type the password for the Directory Service Restore Mode Administrator account, type the new password that you want to use.

37. Why can't you restore a DC that was backed up 4 months ago?

38. What are GPOs?

Ans: Group Policy gives you administrative control over users and computers in your network. By using Group Policy, you can define the state of a user's work environment once, and then rely on Windows Server 2003 to continually force the Group Policy settings that you apply across an entire organization or to specific groups of users and computers.

39. What is the order in which GPOs are applied?

40. Name a few benefits of using GPMC.

41. What are the GPC and the GPT? Where can I find them?

42. What are GPO links? What special things can I do to them?

43. What can I do to prevent inheritance from above?

44. How can I override blocking of inheritance?

45. How can you determine what GPO was and was not applied for a user?Name a few ways to do that.

46. A user claims he did not receive a GPO, yet his user and computer accountsare in the right OU, and everyone else there gets the GPO. What will you look for?

47. Name a few differences in Vista GPOs

48. Name some GPO settings in the computer and user parts.

49. What are administrative templates?

Ans: Administrative templates are a key component of Group Policy on Windows 2000, Windows XP, and Windows Server 2003. These templates are Unicode-formatted text files with the extension .adm and are used to create the Administrative Templates portion of the user interface for the Group Policy Object Editor

50. What's the difference between software publishing and assigning?

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