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Microsoft 070-491 Exam Syllabus Topics:

Microsoft Recertification for MCSD: Windows Store Apps using C# Sample Questions:

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) App.xaml
B) Package.appxmanifest
C) Assemblyinfo.es
D) Geoloc.csproj

2. Users report performance issues when getting the location information associated with a photo. You suspect the app is encountering performance issues in the GetLocationAsync() method of the Environment class.
You need to enhance the performance of the GetLocationAsync() method of the app.
What should you do?

A) Move the locator variable to a class level variable and initialize it in the Environment constructor.
B) set the ReportInterval property of the Compass object to 16.
C) set the ReportInterval property of the Compass object to 0.
D) Remove the Compass initialization from the LoadSensors() method and initialize it within the GetLocationAsync() method.

3. You are developing a Windows Store app. You have the following requirements:
- Enable the app to receive shared data.
- Save the sharing settings for future use.
You need to ensure that the requirements are met.
What should you implement?

A) a share charm
B) a QuickLink
C) a Share target
D) a play to charm

4. You are developing a Windows Store app that accesses a USB Human Interface Device (HID). The app has a default page and a settings page.
You need to ensure that when a user connects the USB device, the app starts automatically and opens the settings page.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

A) Override the OnLaunched method in the Application class and use the ApplicationViewEventArgs interface.
B) Add a File Type Associations declaration to the app manifest.
C) Add an AutoPlay Device declaration to the app manifest.
D) Override the OnActivated method in the Application class and use the ActivatedEventArgs interface.
E) Add a Removable Storage capability to the app manifest.

5. DRAG DROP
You are developing a Windows Store app.
The app has the following requirements:
- Open the Search charm.
- Provide query suggestions by using the GetSuggestions() method-
You need to ensure that the app meets the requirements. You have the following code:

Which code snippets should you insert in Target 1 and Target 2 to complete the code? (To answer, drag the appropriate code snippets to the correct targets in the answer area. Each code snippet 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.)

Solutions: