All servers on your network run Windows Server 2008 R2. You deploy Remote Desktop
Services (RDS). You are configuring the Remote Desktop Session Host (RD Session Host)
role service. You install an application on all of the RD Session Host servers. The application
communicates with a server that allows only one connection per IP address. You need to
configure the Remote Desktop IP Visualization settings for this application. Which two
actions should you perform? (Each correct answer presents part of the solution. Choose
two.)

A.
Enable Remote Desktop IP Visualization,

B.
Set the IP Visualization mode to Per session,

C.
Set the IP Visualization mode to Per program.

D.
Disable Remote Desktop IP Visualization.

Explanation:

12/06/2012 Changed answer from BC to AC, because it states in the question “The
application communicates with a server that allows only one connection per IP address.”
there is no need to set Set the IP Visualization mode to Per session,
http://blogs.msdn.com/b/rds/archive/2009/07/09/configuring-remote-desktop-ip-virtualizationpart- 1.aspx
Remote Desktop IP Virtualization allows IP addresses to be assigned to remote desktop
connections on a per session or per program basis. This can be useful if a program
communicates with a server that only allows one connection per IP address. Prior to
Windows Server 2008 R2, every session on an RD Session Host server was assigned the
same IP address. With Windows Server 2008 R2, you can use Remote Desktop IP
Virtualization to assign IP addresses on a per session or per program basis. If you assign IP
addresses for multiple programs, they will share a per session IP address. If you have more
than one network adapter on the server, you must also choose one network adapter for
Remote Desktop IP Virtualization.
Remote Desktop IP Virtualization is configured by using the Remote Desktop Session Host
Configuration tool.
On the RD IP Virtualization tab of Remote Desktop Session Host Configuration, you can do
the following:
Enable or disable Remote Desktop IP Virtualization.
Select the network adapter to be used for Remote Desktop IP Virtualization.
Configure whether the Remote Desktop IP Virtualization mode is per session or per
program.
If Remote Desktop IP Virtualization is configured per program, you can add a list of
programs that Remote Desktop IP Virtualization can use.
Membership in the local Administrators group, or equivalent, on the RD Session Host server
that you plan to configure, is the minimum required to complete this procedure. Review
details about using the appropriate accounts and group memberships at
http://go.microsoft.com/fwlink/?LinkId=83477.
To configure Remote Desktop IP Virtualization settings
On the RD Session Host server, open Remote Desktop Session Host Configuration. To
open Remote Desktop Session Host Configuration, click Start, point to Administrative Tools,
point to Remote Desktop Services, and then click Remote Desktop Session Host
Configuration.
In the Edit settings area, under RD IP Virtualization, double-click IP Virtualization.
In the Properties dialog box, click the RD IP Virtualization tab.
To enable or disable Remote Desktop IP Virtualization, do one of the following:
Select the Enable IP virtualization check box to enable Remote Desktop IP Virtualization.
Clear the Enable IP virtualization check box to disable Remote Desktop IP Virtualization.
To select the network adapter to be used for Remote Desktop IP Virtualization, in the Select
the network adapter to be used for IP virtualization list, select the appropriate network
adapter.
To select the Remote Desktop IP Virtualization mode, under IP virtualization mode:
Click Per session to configure Remote Desktop IP Virtualization to run in per session mode.
Click Per program to configure Remote Desktop IP Virtualization to run in per program
mode.
To assign which programs use Remote Desktop IP Virtualization, under Assign virtual IP
addresses to these programs, click Add Program.
http://technet.microsoft.com/en-us/library/dd759263.aspx