Your role of Systems Administrator at ABC.com includes the management of the company’s private
cloud.
The private cloud is hosted on an internal System Center 2012 infrastructure.
The network includes servers that run Windows Server 2008 R2 Hyper-V and are managed by servers
running System Center 2012 – Virtual Machine Manager (VMM).
You are configuring a hardware profile in VMM.
The hardware profile will be used to create virtual machines configured for Windows Network Load
Balancing.
In the Network Adapter Properties, you configure the network adapter to be connected to a logical
network and to use a Static IP address from the Static IP Pool.
You now need to configure the MAC address options.
Which two of the following options should you configure? (Choose two).

A.
You should select the option for a Dynamic MAC Address.

B.
You should select the option for a Static MAC Address.

C.
You should tick the Enable Spoofing of MAC Addresses checkbox.

D.
You should clear the Enable Spoofing of MAC Addresses checkbox.

Explanation:
Answers C, B
In order for NLB service to function properly, it will assign all clustered NIC the same MAC address. It
cannot do this if spoofing is disabled, so answer C is valid. Additionally, we want to make sure that
once the MAC addresses are set by NLB, they don’t change, this means answer B is valid.
http://technet.microsoft.com/en-us/library/bb742455.aspx
http://blogs.technet.com/b/jhoward/archive/2009/05/21/new-in-hyper-v-windows-server-2008-r2-
part-2-macspoofing.aspx

(Since VMM is an abstraction to hyperv, we can assume hyperV NLB requirements are the same as
VMM NLB requirements.)