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Exam Code: 070-491
Exam Name: Recertification for MCSD: Windows Store Apps using C#
Updated: Aug 21, 2026
Q & A: 91 Questions and Answers
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| Section | Weight | Objectives |
|---|---|---|
| Implement Data Access and Connectivity | 25% | - Work with local and remote data
|
| Implement Security, Devices, and Windows Platform Features | 25% | - Integrate platform capabilities
|
| Design and Implement Application Architecture | 25% | - Design application structure
|
| Develop User Interface and User Experience | 25% | - Create adaptive user interfaces
|
Question 1
You are developing a Windows Store app named GeoLoc. You have the following code:
When you run the app on some devices, you receive the following error message: "An exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll but was not handled in user code."
You need to resolve the issue that causes the exception to occur.
Which file should you modify?
A. Package.appxmanifest
B. App.xaml
C. Geoloc.csproj
D. Assemblyinfo.es
Question 2
HOTSPOT
You plan to develop several Windows Store apps.
You plan to use a CheckBox control in all of the apps. The CheckBox control will use a custom visual display.
You create XAML markup to customize the control. The code contains all of the necessary visual components for the control, including elements named checkedGlyph and indeterminateGlyph.
You need to ensure that the check box meets the following requirements:
- If a value for the check box was NOT set, the check box must display
indeterminateGlyph.
- When the check box is selected, the check box must display checkedGlyph.
- If the check box is cleared, the check box must NOT display any glyphs.
You have the following XAML markup: Which code snippets should you insert in Target 1, Target 2, Target 3, Target 4, Target 5 and Target 6 to complete the XAML markup? (To answer, select the correct code snippet from each drop-down list in the answer area.)


Question 3
DRAG DROP
You are developing a Windows Store game. The game allows for interactive online play between users.
The game authenticates users by using the credentials of a third-party site that provides OAuth2 authentication.
You need to implement authentication that uses an implicit grant authorization.
How should you complete the relevant code? (To answer, drag the appropriate code segments to the correct locations in the answer area. Each code segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.)
Question 4
You need to protect the metadata for the secure documents.
Which protection descriptor should you use for the DataProtectionProvider object?
A. SID
B. LOCAL=user
C. WEBCREDENTIALS=userrpassword
D. USER=current
Question 5
HOTSPOT
You are developing a Windows Store app.
You configure the app to support AutoPlay when a portable media player is connected to a
Windows 8.1 device.
You need to verify whether the app was initiated from AutoPlay.
What code should you add to the OnActivated event handler? (To answer, select the
appropriate options in the answer area.)

Solutions:
| Question 1 Answer: A | Question 2 Answer: Only visible for members | Question 3 Answer: Only visible for members | Question 4 Answer: B | Question 5 Answer: Only visible for members |
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