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

1. 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.

2. You need to track the screen orientation and page size. Which code segment should you insert at line CS09?

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

3. HOTSPOT
You are developing a Windows Store app that allows users to copy music from their local computers to removable storage.
The app displays songs grouped by the month the song was downloaded and allows individual songs to be copied to the removable storage device. The user interface for selecting and copying songs uses data binding.
You need to load and return songs in a format appropriate for data binding.
How should you complete the code segment? (To answer, select the appropriate line of code from each drop-down list in the answer area.)

4. You are developing an app that will be used to purchase and share music. Users will be allowed to share only content that they have purchased.
You need to display a message within the Share charm when users attempt to share content that they have not purchased.
What should you do?

A) Set the LegalInformation property of the DataPackage object.
B) Use the SetText() method of the DataPackage object.
C) Use the FailWithDisplayText() method of the DataRequest object.
D) Use a toast notification.

5. 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.)

Solutions: