Read Active Directory Interview Questions and Answers for Interview
Active Directory interview questions and answers most asked at top companies. These Active Directory questions are for both experienced & fresher candidates.
List of Questions
- What is Active Directory?
- What are the new features in Active Directory (AD) of Windows server 2012?
- Which is the default protocol used in directory services?
- Explain the term FOREST in AD?
- What is SYSVOL?
- What is the difference between domain admin groups and enterprise admins group in AD?
- What system state data contains?
- What is Kerberos?
- Where does the AD database is held? What other folders are related to AD?
- What is PDC emulator and how would one know whether PDC emulator is working or not?
- What are lingering objects?
- What is TOMBSTONE lifetime?
- What is Active Directory Schema?
- What is a child DC?
- What is RID Master?
- What are the components of AD?
- What is Infrastructure Master?
#Active Directory Interview Questions and Answers
What is Active Directory?
An active directory is a directory structure used on Microsoft Windows based servers and computers to store data and information about networks and domains.
What are the new features in Active Directory (AD) of Windows server 2012?
- dcpromo (Domain Controller Promoter) with improved wizard: It allows you to view all the steps and review the detailed results during the installation process
- Enhanced Administrative Center: Compared to the earlier version of active directory, the administrative center is well designed in Windows 2012. The exchange management console is well designed
- Recycle bin goes GUI: In windows server 12, there are now many ways to enable the active directory recycle bin through the GUI in the Active Directory Administrative Center, which was not possible with the earlier version
- Fine grained password policies (FGPP): In windows server 12 implementing FGPP is much easier compared to an earlier It allows you to create different password policies in the same domain
- Windows Power Shell History Viewer: You can view the Windows PowerShell commands that relates to the actions you execute in the Active Directory Administrative Center UI
Which is the default protocol used in directory services?
The default protocol used in directory services is LDAP ( Lightweight Directory Access Protocol).
Explain the term FOREST in AD?
Forest is used to define an assembly of AD domains that share a single schema for the AD. All DC’s in the forest share this schema and is replicated in a hierarchical fashion among them.
What is SYSVOL?
The SysVOL folder keeps the server’s copy of the domain’s public files. The contents such as users, group policy, etc. of the sysvol folders are replicated to all domain controllers in the domain.
What is the difference between domain admin groups and enterprise admins group in AD?
|Enterprise Admin Group||Domain Admin Group|
What system state data contains?
System state data contains
- Contains startup files
- Com + Registration Database
- Memory page file
- System files
- AD information
- SYSVOL Folder
- Cluster service information
What is Kerberos?
Kerberos is an authentication protocol for network. It is built to offer strong authentication for server/client applications by using secret-key cryptography.
Where does the AD database is held? What other folders are related to AD?
AD database is saved in %systemroot%/ntds. In the same folder, you can also see other files; these are the main files controlling the AD structures they are
- res 1.log
What is PDC emulator and how would one know whether PDC emulator is working or not?
PDC Emulators: There is one PDC emulator per domain, and when there is a failed authentication attempt, it is forwarded to PDC emulator. It acts as a “tie-breaker” and it controls the time sync across the domain.
These are the parameters through which we can know whether PDC emulator is working or not.
- Time is not syncing
- User’s accounts are not locked out
- Windows NT BDCs are not getting updates
- If pre-windows 2000 computers are unable to change their passwords
What are lingering objects?
Lingering objects can exists if a domain controller does not replicate for an interval of time that is longer than the tombstone lifetime (TSL).
What is TOMBSTONE lifetime?
Tombstone lifetime in an Active Directory determines how long a deleted object is retained in Active Directory. The deleted objects in Active Directory is stored in a special object referred as TOMBSTONE. Usually, windows will use a 60- day tombstone lifetime if time is not set in the forest configuration.
What is Active Directory Schema?
Schema is an active directory component describes all the attributes and objects that the directory service uses to store data.
What is a child DC?
CDC or child DC is a sub domain controller under root domain controller which share name space
What is RID Master?
RID master stands for Relative Identifier for assigning unique IDs to the object created in AD.
What are the components of AD?
Components of AD includes
- Logical Structure: Trees, Forest, Domains and OU
- Physical Structures: Domain controller and Sites
What is Infrastructure Master?
Infrastructure Master is accountable for updating information about the user and group and global catalogue.