You install the Windows Deployment Services (WDS) role on a server that runs Windows Server 2008 R2.
You plan to install Windows 7 on a computer that does not support Preboot Execution Environment (PXE).
You have a Windows 7 image that is stored on the WDS server.
You need to start the computer and install the image that is stored on the WDS server.
What should you create?

A.
a capture image

B.
a CD-ROM that contains PXE drivers

C.
a discover image

D.
an install image

Explanation:
Creating discover images
If you have a computer that is not PXE enabled, you can create a discover image and use it to install an operating system on that computer. Otherwise, you can skip this section. When you create a discover image and save it to media (CD, DVD, USB drive, and so on), you can then boot a computer to the media. The discover image on the media locates a Windows Deployment Services server, and the server deploys the install image to the computer. You can configure discover images to target a specific Windows Deployment Services server. This means that if you have multiple servers in your environment, you can create a discover image for each, and then name them based on the name of the server.
Source: http://technet.microsoft.com/en-us/library/cc766320%28WS.10%29.aspx