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Exam Code: 070-491
Exam Name: Recertification for MCSD: Windows Store Apps using C#
Updated: Aug 27, 2026
Q & A: 91 Questions and Answers
070-491 Free Demo download
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| Section | Objectives |
|---|---|
| Topic 1: Debugging, Performance, and Troubleshooting | - Debugging tools and techniques - Exception handling and diagnostics - Performance optimization strategies |
| Topic 2: User Interface Design with XAML | - Control templates and styling - Data binding and MVVM pattern implementation - Layout controls and adaptive UI design |
| Topic 3: Networking and Services | - Consuming RESTful services - Background transfers and connectivity scenarios - Handling HTTP requests and responses |
| Topic 4: App Deployment and Windows Store | - Packaging and deployment process - Windows Store certification requirements |
| Topic 5: Application Lifecycle Management | - State management and persistence during lifecycle events - App activation, suspension, and termination handling |
| Topic 6: Data Access and Storage | - File system access and permissions - Local storage and roaming data - Serialization and data persistence techniques |
Question 1
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.)

Question 2
DRAG DROP
You are developing a Windows Store app.
You need to ensure that the app meets the following requirements:
- When the app is started, the app bar must appear at the top of the app. - When the app is resized, if the new width of the app is less than 400 pixels, the app bar must be hidden. Users must be able to show the app bar by right-clicking.
- When the app is resized, if the new width is greater than 400 pixels, the app bar must be visible. Users must be able to hide the app bar by right-clicking, pressing Windows + Z, or swiping in from the top edge of the screen.
You have the following XAML markup in a file named MainPage.xaml. (Line numbers are included for reference only.)
You have the following code in a file named MainPage.xaml.es. {Line numbers are included for reference only.)
Which code segments should you insert in MainPage.xaml and MainPage.xaml.cs? (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 3
You need to localize the Picture Sharer app in the required language.
Which actions should you perform? (Each correct answer presents part of the solution. Choose all that apply.)
A. Create a resource file named resources.res.
B. Create a folder named es-ES at the root of the project.
C. Create a resource file named resources.resw.
D. Create a folder named fr-CA at the root of the project.
E. Add a Uid attribute to any XAML elements that must be localized.
F. Add a Name attribute to any XAML elements that must be localized.
Question 4
You need to track the screen orientation and page size. Which code segment should you insert at line CS09?
A. Option C
B. Option A
C. Option D
D. Option B
Question 5
You are developing a Windows Store app that will provide users with the ability to subscribe to content by using in-app purchases.
You need to test the in-app purchase functionality of the app before you deploy the app to the Windows Store.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Modify the App.xaml file.
B. Use the CurrentApp class.
C. Modify the Windowsstoreproxy.xml file.
D. Modify the Package.appxmanifest file.
E. Use the CurrentAppSimulator class.
Solutions:
| Question 1 Answer: Only visible for members | Question 2 Answer: Only visible for members | Question 3 Answer: C,D,E | Question 4 Answer: B | Question 5 Answer: B,E |
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