Your network contains an Active Directory domain named contoso.com. All client computer
accounts are in an organizational unit (OU) named AllComputers. Client computers run either
Windows 7 or Windows 8.
You create a Group Policy object (GPO) named GP1.
You link GP1 to the AllComputers OU.
You need to ensure that GP1 applies only to computers that have more than 8 GB of memory.
What should you configure?

A.
The Security settings of GP1

B.
The Block Inheritance option for AllComputers

C.
The Security settings of AllComputers

D.
The WMI filter for GP1

Explanation:
Windows Management Instrumentation (WMI) filters allow you to dynamically determine the scope
of Group Policy objects (GPOs) based on attributes of the target computer.
When a GPO that is linked to a WMI filter is applied on the target computer, the filter is evaluated on
the target computer. If the WMI filter evaluates to false, the GPO is not applied (except if the client
computer is running Windows Server, in which case the filter is ignored and the GPO is always
applied). If the WMI filter evaluates to true, the GPO is applied. WMI filters, like GPOs, are stored on
a per-domain basis. A WMI filter and the GPO it is linked to must be in the same domain.
References:
Training Guide: Installing and Configuring Windows Server 2012 R2: Chapter 10: Implementing
Group Policy, p.470, 482
http://technet.microsoft.com/en-us/library/jj134176
WMI filtering using GPMC