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QUESTION 51
You need to register the reusable WinMD component. What should you do?

A.    Option A
B.    Option B
C.    Option C
D.    Option D

Answer: A

QUESTION 52
You need to modify the existing GetCurrentEnvironmentAsync() method in the Environment WinMD component to accept parameters.
Which type should you use at line CE07?

A.    dynamic
B.    List<string>
C.    Task<EnvironmentalStatus>
D.    IList<string>

Answer: C

QUESTION 53
The users need the ambient light readings at the time a goose sighting is made.
You need to set up the light-sensing device.
Which code segment should you add to the LoadSensors() method of the Environment class?

A.    Option A
B.    Option B
C.    Option C
D.    Option D

Answer: D
Explanation:
http://msdn.microsoft.com/en-us/library/windows/apps/br206408.aspx ¹

QUESTION 54
You need to set the PlayTo source in the LoadFile() method.
Which line of code should you insert at line PT30?

A.    element.SetSource(videoFile, contentType);
B.    playToManager.SetSource(stream, contentType);
C.    dispatcher.SetSource(stream, contentType);
D.    element.SetSource(stream, contentType);

Answer: D

QUESTION 55
You need to ascertain whether the device that the app is running on has a compass.
Which line of code should you insert at line CE43?

A.    while(Windows.Devices.Sensors == Compass)
B.    if (Compass.GetDefault() != null)
C.    if (Compass.GetDefault() == Compass.FirstOrDefault)
D.    if (Compass.GetCurrentReading() != null)

Answer: B

QUESTION 56
Drag and Drop Question
You need to call the DoWork() method asynchronously in a background task.
Which four lines of code should you use to create the Run() method on line SP13? (To answer, move the appropriate lines of code from the list of code segments to the answer area and arrange them in the correct order.)

Answer:

QUESTION 57
You need to update the DoWork() method of the background task to meet the requirements.
What should you do? (Each correct answer presents part of the solution. Choose all that apply.)

A.    Get the IsCancellationRequested property from the CancellationToken object and return a TaskCompletionSource object.
B.    Access the Progress object and report the task's progress to the caller.
C.    Update the DoWork() method to receive a Progress object.
D.    Add the CancellationToken object to the client.GetAsync() method.
E.    Confirm that the IsCancellationRequested property of the CancellationToken object is true and exit the task.
F.    Update the DoWork() method to receive a CancellationToken object in the arguments of the method.

Answer: DEF

QUESTION 58
You need to enable the capabilities that allow communication according to the technical requirements.
Which capabilities should you enable? (Each correct answer presents part of the solution.
Choose all that apply.)

A.    Shared User Certificates
B.    SSL Certificates
C.    Internet (Client)
D.    Default Windows Credentials

Answer: BC

QUESTION 59
Drag and Drop Question
You need to ascertain whether the app trial period has expired.
You have the following code that you plan to insert at line AX22 of App.xaml.cs:

Which code snippets should you include 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.)

Answer:

QUESTION 60
You need to handle the following exception and meet the error handling requirements.

Which code segment should you use?

A.    Option A
B.    Option B
C.    Option C
D.    Option D

Answer: A

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1. http://msdn.microsoft.com/en-us/library/windows/ap ps/br206408.aspx