Hotspot Question
You have a server named Server1 that runs Windows Server 2016. Server1 has the Web
Application Proxy role service installed. You publish an application named App1 by using the Web
Application Proxy. You need to change the URL that users use to connect to App1 when they work
remotely. Which command should you run? (To answer, select the appropriate options in the
answer area.)
Answer: 
Answer should be “Set-WebApplicationProxyApplication” and “-ExternalURL”.
Source: https://docs.microsoft.com/en-us/powershell/module/webapplicationproxy/set-webapplicationproxyapplication?view=win10-ps
Example:
PS C:\>Set-WebApplicationProxyApplication -ID 874A4543-7983-77A3-1E6D-1163E7419AC1 -ExternalUrl https://SP.Contoso.com/
Yep.