Active Directory Domain Controller (AD DC) authenticates and authorizes all users and computers on a Windows domain network by assigning and enforcing security policies. It uses LDAP, Kerberos, and DNS to authenticate users and determine their access privileges when they log in. To configure a server as an AD DC, an administrator opens Server Manager, adds the Active Directory Domain Services role, and runs through a wizard to create a new domain forest, set the domain name and password, configure DNS, and restart the server.

1. Windows server 2012 R2
AD DC
By : Abdullah alalyani
Teacher :Ibrahim AL-Odaini
Article : Operating systems

2. What is AD DC ?
Active Directory (AD) is a directory service that Microsoft developed for Windows domain networks and is included in most Windows Server operating systems as a set of processes and services.
An AD domain controller authenticates and authorizes all users and computers in a Windows domain type network—assigning and enforcing security policies for all computers and installing or updating software. For example, when a user logs into a computer that is part of a Windows domain, Active Directory checks the submitted password and determines whether the user is a system administrator or normal user.
Active Directory makes use of Lightweight Directory Access Protocol (LDAP) versions 2 and 3, Microsoft's version of Kerberos, and DNS.

3. The first step go to server manager and press add roles and fetchers .

4. Then open add roles and fetchers wizard (before you begin)press next .

5. Then select installation type press next.

6. Select destination server press next.

7. Select server roles and select active directory domain server and press next .

8. Select fetchers and press next .

9. Active directory domain services and press next .

10. Confirm installation selections and press install .

11. The finale steps close wizard .

12. Go to navigation mark and go to the link domain configuration .

13. Select add new forest and write domain name .

14. Input the password .

15. Configuration DNS press next .

16. Additional options press next .

17. Paths press next .

18. Prerequisites cheek press install .

19. Final step restart the server .