Active Directory Domains and Trusts:

1 Implementing trusts
2 Raising domain/forest functional levels
3 Adding user logon suffixes

Active Directory Sites and Services:

25 Configuring intrasite/intersite replication
26 Configuring global catalog
27 Creation of sites, site links, subnets.
28 Scheduling replication


Active Directory Users and Computers:

29 Managing users/groups
30 Managing computers.
31 Managing OUs
32 Managing Group Policy (Domain Level)
33 Managing Operations masters.
34 Raising domain functional level.

Domain controller security policy:

1 Set account, audit and password policies
2 Set user rights
3 Permissions or policies Pertains only to the DC where you set.

Domain security policy:

4 Set account, audit and password policies
5 Set user rights
6 Permissions or policies Pertain to the DC as well as to all the domains within.