Your company runs Remote Desktop Services. You have a Remote Desktop Session Host (RD Session
Host) server. You need to select a digital certificate for signing Remote Desktop Protocol (.rdp) files.
Which two certificate types can you use to achieve this goal? (Each correct answer presents a
complete solution. Choose two.)

A.
Code signing

B.
Authenticated Session

C.
Workstation Authentication

D.
Remote Desktop Protocol (RDP) Signing

Explanation:
You can sign .rdp files that are used for RemoteApp connections by using a Server Authentication
certificate [Secure Sockets Layer (SSL) certificate], a Code Signing certificate, or a specially defined
Remote Desktop Protocol (RDP) Signing certificate.
http://technet.microsoft.com/en-us/library/cc754499.aspx