HOTSPOT
You have an image of Windows 10 Enterprise named Image1. Image1 has version number 1.0.0.0 of a
custom, line-of-business universal app named App1.
You deploy Image1 to Computer1 for a user named User1.
You need to update App1 to version 1.0.0.1 on Computer1 for User1 only.
What command should you run? To answer, select the appropriate options in the answer area.
Hot Area:

Answer:

Explanation:
In this question, we need to update App1 to version 1.0.0.1 on Computer1 “for User1 only”. The AddAppxPackage cmdlet adds a signed app package (.appx) to a user account.
To update the application, we need to use the –path parameter to specify the path to the upgraded application.
Incorrect Answers:
add-provisionedappxpackage would make the app available to all users, not just User1 only.
Set-AppXProvisionedDataFile adds custom data into an app. It does not update it to a later version.

https://technet.microsoft.com/en-us/library/hh856048.aspx
http://blogs.technet.com/b/sunshine/archive/2014/03/22/updating-a-modern-app-in-windows-8.aspx