You are the systems administrator for a medium-sized Active Directory domain.
Currently, the environment supports many different domain controllers, some of which are running Windows
NT 4and others that are running Windows 2003and Server 2008 R2.
When you are running domain controllers in this type of environment, which of the following types of groups
can you not use?
(Choose Two)

A.
Universal security groups

B.
Global groups

C.
Domain local groups

D.
Computer groups

Explanation:
http://support.microsoft.com/kb/231273
Group Type and Scope Usage in Windows
Windows 2000 and later extends the Microsoft Windows NT 4.0concept of user groups by adding
Universal and Distribution groups. In Windows NT 4.0, there are only Global and Local groups, and both are
considered Security groups.