Hotspot Question
You have a server named Served that runs Windows Server 2016. Server1 has the Windows
Application Proxy role service installed. You are publishing an application named App1 that will use
Integrated Windows authentication as shown in the following graphic.
Use the drop-down menus to select the answer choice that completes each statement based on
the information presented in the graphic.
Answer: 
Explanation:
https://technet.microsoft.com/en-us/library/dn383640(v=ws.11).aspx
Correct.
Both the Backend URL and the External URL are required to be the same.