You have a server named Server1 that runs Windows Server 2012 R2. Server1 has the Windows
Deployment Services server role installed.
Server1 contains two boot images and four install images.
You need to ensure that when a computer starts from PXE, the available operating system images
appear in a specific order.
What should you do?
A.
Modify the properties of the boot images.
B.
Create a new image group.
C.
Modify the properties of the install images.
D.
Modify the PXE Response Policy.
C is correct
https://blogs.technet.microsoft.com/sunshine/2014/11/22/how-to-change-the-the-display-order-while-doing-pxe-boot-from-wds/
According to this: https://technet.microsoft.com/en-us/library/cc732729(v=ws.10).aspx#Boot
“What is the difference between install images and boot images?
Install images are the operating system images that you deploy to the client computer. Boot images are the images that you boot a client computer into to perform an operating system installation. Boot images contain Windows PE and the Windows Deployment Services client (the client is essentially Windows Vista Setup.exe and its supporting files for Windows Deployment Services). You can use the standard boot images that are included on the Windows Vista or Windows Server 2008 media (located at \Sources\boot.wim) without modification. However, the Boot.wim that you use must match or be newer than the operating system of the install image. For example, if you are installing Windows Vista, you must use the boot image from the Windows Server 2008 media; you cannot use the Boot.wim from the Windows Vista media. You can also create custom boot images. For more information, see Creating Images.”
And according to this: https://technet.microsoft.com/en-us/library/cc730907(v=ws.10).aspx
” Install image: The operating system image that you deploy to the client computer. To create install images using Windows Deployment Services, you must first create a capture image.
Boot image: The Microsoft Windows Preinstallation Environment (Windows PE) image that you boot a client into before you install the install image. To install an operating system, you first boot the computer into the boot image, and then you select the install image to install. You can also create two additional types of boot images:
Capture image: A type of boot image that you boot a client computer into to capture the operating system as a .wim file. You must first create a capture image when you are creating custom install images.
Discover image: A type of boot image that you can use to install an operating system on a computer that is not Pre-Boot Execution Environment (PXE) enabled. When you boot a computer into a discover image, a Windows Deployment Services server will be located, and then you can choose the install image you want to install.”
So it will be C isn’t it?
Because as I understood, you first use “boot images” to boot computer, but then, you choose to run “install images” to install an operating system. Isn’t it? And the question says that the computer is already started and needs to choose an image, so it needs “install images” to be configured.