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Advanced Windows Store App Development using C#

Question No: 51 DRAG DROP – (Topic 4)

You add a MediaElement named VideoTour and a button named playToButton to the properties details page.

You need to ensure that video tours can be played to other devices.

You have the following code: (Line numbers are included for reference only.)

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Which elements should you include in Target 1, Target 2 and Target 3 to complete the code? (To answer, drag the appropriate elements to the correct targets in the answer area. Each element 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.)

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Answer:

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Question No: 52 HOTSPOT – (Topic 4)

You need to handle the Click event of the Print button.

You have the following code: (Line numbers are included for reference only.)

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Which code snippets should you insert in Target 1 and Target 2 to complete the code? (To answer, select the correct code snippet from each drop-down list in the answer area.)

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Answer:

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Question No: 53 – (Topic 4)

You add a button named btnDownloadTours to the search results page.

You create a method named DownloadTour to download video tours synchronously.

DownloadTour receives a single parameter of type integer, representing the ID of a video tour.

As customers add listings to their favorites list, the ID of the video tour is added to a collection named selectedTours.

You need to implement the code required to download the video tour based on the video tour requirements.

What code should you add to the Click event of btnDownloadTours? (More than one answer choice may achieve the goal. Select the BEST answer.)

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  1. Option A

  2. Option B

  3. Option C

  4. Option D

Answer: C

Question No: 54 – (Topic 4)

You need to configure Package.appxmanifest to support the download of pictures. The solution must meet the general requirements.

Which code segment should you add to line 04? (More than one answer choice may achieve the goal. Select the BEST answer.)

  1. lt;Task Type=quot;timerquot; /gt;

  2. lt;Task Type=quot;SystemEventquot; /gt;

  3. lt;Task Type=quot;deviceUsequot; /gt;

  4. lt;Task Type=quot;pushNotificationquot; /gt;

Answer: D

Question No: 55 DRAG DROP – (Topic 4)

You need to recommend which code must be implemented to meet the requirements for resuming the video tour downloads.

Develop the solution by selecting and ordering the required code snippets. You may not need all of the code snippets.

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Answer:

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Explanation:

Box 1:

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Box 2:

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Box 3:

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Box 4:

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Box 5:

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Note:

  • GetCurrentDownloadsAsync

    Returns a collection of pending downloads that are not associated with a group.

  • await Task.WhenAny

    By using Task.WhenAny, you can start multiple tasks at the same time and process them one by one as they’re completed rather than process them in the order in which they#39;re started.

  • From scenario:

/When a customer clicks the details of a listing, the app must start downloading the video tour in the background.

/ When the app starts, the app must verify whether there are any pending downloads, and resume any paused downloads.

/ When downloading the video tours, the app must remain responsive, and each download must be processed on a separate thread.

Incorrect:

  • Not: await Task.WhenAll (need separate threads)

    You apply the Task.WhenAll method to a collection of tasks. The application of WhenAll returns a single task that isn’t complete until every task in the collection is completed. The tasks appear to run in parallel, but no additional threads are created. The tasks can complete in any order.

  • Not: RequestUnconstrainedDownloadsAsync

Used to request an unconstrained download operation

When this method is called the user is provided with a UI prompt that they can use to indicate their consent for an unconstrained operation.

An unconstrained transfer operation will run without the resource restrictions normally associated with background network operations while a device is running on battery.

Topic 5, Mixed Questions

Question No: 56 DRAG DROP – (Topic 5)

You are developing a Windows Store app.

You need to create an animation that moves a rectangle horizontally across the screen by using a storyboard.

You have the following code:

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Which code snippets should you include in Target 1, Target 2, Target 3, Target 4 and Target 5 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.)

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Answer:

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Explanation:

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C:\Users\Kamran\Desktop\image.jpg

Question No: 57 – (Topic 5)

You are preparing to deploy a Windows Store app to the marketplace.

You need to ensure that unhandled errors and exceptions are never displayed to users. What should you do?

  1. In the app object, wrap the call to the Window.Current.Activate() method in a try-catch statement to handle any exceptions that occur.

  2. Open the Exceptions window in Visual Studio and clear the check box for unhandled exceptions for the Common Language Runtime.

  3. Write a handler for the UnhandledException event and set the Handled property on the UnhandledExceptionEventArgs object to true.

  4. Write a handler for the UnhandledException event and set the CancelBubble property on the UnhandledExceptionEventArgs object to true.

Answer: C

Question No: 58 HOTSPOT – (Topic 5)

You are developing a Windows Store app. The app has the following requirements:

->It must allow users to choose contacts by using a ContactPicker class.

->It must continue to be responsive while the ContactPicker class is displayed.

You need to ensure that the ContactPicker class is displayed to meet the requirements.

How should you complete the code segment? (To answer, select the appropriate line of code from each drop-down list in the answer area.)

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Answer:

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Question No: 59 HOTSPOT – (Topic 5)

You are developing a Windows Store app that uses location services. You need to indicate that a user has blocked location services.

How should you complete the code segment? (To answer, select the appropriate line of code from the drop-down list in the answer area.)

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Answer:

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Question No: 60 HOTSPOT – (Topic 5)

You are developing a Windows Store app.

A file named Test.csv contains the following content:

You have a project that contains the following code:

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The Test1 function is the only test in the project.

For each of the following statements, select Yes if the statement is true. Otherwise select No. Each correct selection is worth one point.

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Answer:

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