Your company has an Active Directory Domain Services (AD DS) domain that runs at the Windows
Server 2008 R2 functional level. All servers run Windows Server 2008 R2. All client computers run
Windows XP Professional. You use the Key Management Service (KMS) to manage your volume
license activations. All servers have been activated by using KMS. You deploy 20 Windows 7 virtual
desktops. The virtual desktop operating systems do not activate. You need to ensure that the virtual
desktops activate by using KMS. What should you do?

A.
Deploy five more virtual desktops.

B.
Run slmgr.vbs with the -ato parameter.

C.
Use the Volume Activation Management Tool (VAMT).

D.
Raise the domain functions level to Windows Server 2008 R2.

Explanation:
KMS Activation Thresholds KMS can activate both physical computers and virtual machines. To
qualify for KMS activation, a network must meet the activation threshold: KMS hosts activate client
computers only after meeting this threshold. To ensure that the activation threshold is met, a KMS
host counts the number of computers that are requesting activation on the network. For computers
running Windows Server 2008 or Windows Server 2008 R2, the activation threshold is five. For
computers running Windows Vista or Windows 7, the activation threshold is 25. The thresholds
include client computers and servers that are running on physical computers or virtual machines. A
KMS host responds to each valid activation request from a KMS client with the count of how many
computers have contacted the KMS host for activation. Clients that receive a count below their
activation threshold are not activated. For example, if the first two computers that contact the KMS
host are running Windows 7, the first receives an activation count of 1, and the second receives an
activation count of 2. If the next computer is a Windows 7 virtual machine, it receives an activation
count of 3, and so on. None of these computers is activated, because computers running Windows 7
must receive an activation count 25 to be activated. KMS clients in the grace state that are not
activated because the activation count is too low connect to the KMS host every two hours to get
the current activation count and will be activated when the threshold is met.
http://technet.microsoft.com/en-us/library/ff793434.aspx