HOTSPOT
You have a server named Server5 that runs Windows Server 2012. Servers has the Windows Deployment Services server role installed. You need to ensure that
when client computers connect to Server5 by using PXE, the computers use an unattended file. What should you configure? To answer, select the appropriate tab
in the answer area.
Hot Area:
Answer: 
Correct answer is ‘Client tab’.
https://technet.microsoft.com/en-us/library/cc732723.aspx
https://blogs.technet.microsoft.com/privatecloud/2016/05/13/how-to-configure-wds-unattend-xml-file-windows-pe-image-and-nano-server-image-to-deploy-a-nano-server/
“To associate a client unattend file by architecture using the Windows interface
Create an Unattend.xml. (See Sample Unattend Files at http://go.microsoft.com/fwlink/?LinkId=122642.)
Copy the client unattend file to RemoteInstall\WDSClientUnattend.
Open the Windows Deployment Services MMC snap-in and right-click the server that contains the image that you want to associate the unattend file with, and then click Properties.
ON THE CLIENT TAB, select Enable unattended installation, browse to the appropriate unattend file, and then click Open.
Click OK to close the Properties page.”
Correct.