Microsoft 070-491 : Recertification for MCSD: Windows Store Apps using C#

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

1. You are developing a Windows Store app.
You declare a Search declaration in the app manifest and you add a search results page.
You plan to display search results by using a Query Text property that derives from EventArgs,
You need to ensure that users can use the Search charm to search for content within the app.
What should you do?

A) Add an event handler for the SearchPane.QuerySubmitted event to MainPage.xaml.es. Register the event handler in the OnWindowCreated method in MainPage.xaml.es.
B) Add an event handler for the SearchPane.QuerySubmitted event to App.xaml.cs. Register the event handler in the OnWindowCreated method of the page.
C) Add an event handler for the SearchPane.QuerySubmitted event to App.xaml.cs. Register the event handler in the constructor of the page.
D) Add an event handler for the SearchPane.QueryChanged event to MainPage.xaml.es. Register the event handler in the OnWindowCreated method in MainPage.xaml.es.

2. You are developing a Windows Store app to view MP4 videos.
You need to ensure that when a user double-clicks an MP4 file, the app starts and plays back the video automatically.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

A) Add an OnFileActivated event handler to the App.xaml.cs file.
B) Add an AutoPlay Content declaration to the Appxmanifest file.
C) Modify the OnActivated event of the App.xaml.cs file to pass ProtocolActivatedEventArgs to the page if ActivatedEventArgs.Kind == ProtocolActivatedEventArgs.
D) Add the Videos Library capability to the Appxmanifest file.
E) Add a File Type Associations declaration to the Appxmanifest file.

3. You are developing a Windows Store app that will provide users with the ability to save annotations to text files.
You have the following code segment: (Line numbers are included for reference only.)

You need to add the contents of data to the beginning of file. Which code segment should you insert at line 03?

A) Option A
B) Option D
C) Option B
D) Option C

4. DRAG DROP
You need to recommend a solution to share images from the capture photo page. You have the following code. (Line numbers are included for reference only.)

Which code segments should you recommend inserting at lines 06 and 12? (To answer, drag the appropriate code segments to the correct locations. 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.)

5. 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) Remove the Compass initialization from the LoadSensors() method and initialize it within the GetLocationAsync() method.
C) set the ReportInterval property of the Compass object to 0.
D) set the ReportInterval property of the Compass object to 16.

Solutions: