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Recertification for MCSD: Windows Store Apps using C#

Question No: 21 – (Topic 7)

You need to implement the photo viewer control to meet the requirements.

What should you do? (Each correct answer presents part of the solution. Choose all that apply.)

  1. Add the themes\generic.xaml file to the project and reference it from the control.

  2. Create a composite control.

  3. Create a user control.

  4. Create a custom control.

  5. In the constructor of the class, set the value of the DefaultStyleKey to the type of the control.

Answer: C,D,E

Question No: 22 – (Topic 7)

You need to implement the requirements for the playback of media.

What should you do? (Each correct answer presents part of the solution. Choose all that apply.)

  1. Add the following line of code at line MC02. private void ShowPlayTo()

    {

    Windows.Media.PlayTo.PlayToManager.ShowPlayToUI();

    }

  2. Add the following line of code at line MC06. ptMgr.DefauitSourceSelection = false;

  3. Add the following line of code at line MC10. ptMgr.PlayRequested = SourceRequestHandler;

  4. Add the following line of code at line MC05. ptMgr.SourceRequested = SourceRequestHandler;

Answer: B,D

Explanation: http://msdn.microsoft.com/en- us/library/windows/apps/windows.media.playto.playtomanager.aspx

Question No: 23 – (Topic 7)

You need to implement a custom control to display thumbnail images of video clips. Which code segment should you use?

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  1. Option A

  2. Option B

  3. Option C

  4. Option D

Answer: C

Explanation: http://msdn.microsoft.com/en- us/library/windows/apps/windows.ui.xaml.controls.control.defaultstylekey.aspx

Topic 8, Scenario 8 Background

You are developing a Windows Store app by using C# and XAML The app will allow users

to share and rate photos. The app will also provide information to users about photo competitions.

Application Structure

The app stores data by using a class that is derived from the DataStoreBase class.

The app coordinates content between users by making calls to a centralized RESTful web service.

The app has a reminder system that displays toast notifications when a photo competition is almost over. The app gets the competition schedule data from the web service.

The app displays a list of images that are available for viewing in a data-bound list box. The image file list stores paths to the image files. The app downloads new images from the web service on a regular basis.

Relevant portions of the app files are shown. (Line numbers are included for reference only and include a two-character prefix that denotes the specific file to which they belong.)

Business Requirements

The app must allow users to do the following:

->Run the app on a variety of devices, including devices that have limited bandwidth connections.

->Share and synchronize high resolution photographs that are greater than 1 MB in size.

->Rate each photo on a scale from 1 through 5.

Technical Requirements

The app must meet the following technical requirements:

->Retain state for each user and each device.

->Restore previously saved state each time the app is launched.

->Preserve user state and photo edits when switching between this app and other apps.

->When the app resumes after a period of suspension, refresh the user interface, tile images, and data with current information from the web service.

->Update the image list box as new images are added to the image file list.

->Convert the image paths into images when binding the image file list to the list box.

The app must store cached images on the device only, and must display images or notifications on the app tile to meet the following requirements:

->Regularly update the app tile with random images from the user#39;s collection

displayed one at a time.

->When a photo is displayed on the tile, one of the following badges must be displayed:

->If the photo has a user rating, the tile must display the average user rating as a badge.

->If the photo does not have a rating, the tile must display the Unavailable glyph as a

badge.

->Update the app tile in real time when the app receives a notification.

->Display only the most recent notification on the app tile.

The app must display toast notifications to signal the end of a photo competition. The toast notifications must meet the following requirements:

->Display toast notifications based on the schedule that is received from the web

service.

->Display toast notifications for as long as possible.

->Display toast notifications regardless of whether the app is running.

->When a user clicks a toast notification that indicates the end of the photo competition, the app must display the details of the photo competition that triggered the toast notification.

App.xaml.cs

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DataStorcBasc.es

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Question No: 24 – (Topic 8)

A photo competition is ending.

You need to meet the requirements when a user clicks the toast notification. Which code segment should you use?

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  1. Option A

  2. Option B

  3. Option C

  4. Option D

Answer: D Explanation: From scenario:

When a user clicks a toast notification that indicates the end of the photo competition, the app must display the details of the photo competition that triggered the toast notification.

Question No: 25 – (Topic 8)

You need to configure toast notifications for the photo competition. Which code segment should you use?

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  1. Option A

  2. Option B

  3. Option C

  4. Option D

Answer: B

Question No: 26 – (Topic 8)

You need to access the remote image data according to the requirements. Which data storage methods should you use?

  1. SaveDataToSqlAzureStorage() and GetDataFromSqlAzureStorage()

  2. SaveDataToRemoteStorage() and GetDataFromRemoteStorage()

  3. SaveDataToAzureStorage() and GetDataFromAzureStorage()

  4. SaveDataToWebService() and GetDataFromWebService()

Answer: D

Topic 9, Mix Questions

Question No: 27 DRAG DROP – (Topic 9)

You are developing a Windows Store social media app. The app communicates with the server by using a secure web service.

You need to ensure that users can securely store and retrieve web service credentials. You have the following code:

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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.)

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Answer:

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Question No: 28 HOTSPOT – (Topic 9)

You are developing a Windows Store app that detects and displays users#39; geographic location details.

During the unit testing of the app, the location details are not displayed. You need to ensure that the user#39;s location data is displayed.

Which tab in Visual Studio should you use to reconfigure the app to display the location data? (To answer, select the appropriate object in the answer area.)

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Answer:

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Explanation:

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

Question No: 29 – (Topic 9)

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?

  1. Add an event handler for the SearchPane.QuerySubmitted event to App.xaml.cs. Register the event handler in the constructor of the page.

  2. 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.

  3. 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.

  4. Add an event handler for the SearchPane.QuerySubmitted event to App.xaml.cs. Register the event handler in the OnWindowCreated method of the page.

Answer: D

Question No: 30 – (Topic 9)

You are developing a Windows Store app.

The app contains a page named MainPage. The page contains a media element named videoPlayer and a button named btnPlayTo.

You need to provide users with the ability to select a device that will display the contents of videoPlayer when they click btnPlayTo.

Which code segment should you add to the Click event handler of btnPlayTo?

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  1. Option A

  2. Option B

  3. Option C

  4. Option D

Answer: D

Explanation: http://msdn.microsoft.com/en- us/library/windows/apps/windows.media.playto.playtomanager.showplaytoui.aspx

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