070-485 試験問題を無料オンラインアクセス

You are developing a Windows Store app that will download files from a remote server.
You need to recommend a solution to display a custom message if a network error occurs during a file download.
What should you include in the recommendation?

• A.Wrap the asynchronous call in a try/catch block
• B.Wrap the Window.Current.ActivateQ call in a try/catch block.
• C.Register an event handler for the Application.UnhandledException event and call Application.Current.Exit.
• D.Register an event handler for the Application.UnhandledException event and set e.Handled to true.

You are developing a Windows Store app named VideoPlayer.
The app will provide user with the ability to select video files by using the file picker and to play the video.
You need to recommend a solution for the app that meets the following requirements:
- If the app is terminated while playing a video, the next time the app starts, the
video must play.
- The app must minimize the amount of storage space used.
- The app must NOT request any capabilities.
What should you include in the recommendation?

• A.Store the StorageFile.Path property in ApplicationData.Current.LocalSettings.
• B.Store the video in ApplicationData.Current.LocalFolder.
• C.Add the file to AccessCache.StorageApplicationPermissions.MostRecentlyUsedList.
• D.Store the video in ApplicationData.Current.RoamingFolder.

HOTSPOT
You are developing a Windows Store app.
The app receives badge notifications from Windows Push Notification Services (WNS).
You configure the app to establish a communication channel with WNS, You use a variable named pushChannel to store the notification channel object used for communication. You add the following line of code to the app:

Which code snippets should you insert in Target 1, Target 2 and Target 3 to complete the code? (To answer, select the correct code snippet from each drop-down list in the answer area.)

正解：

You create a mobile service to send push notifications to the app.
You configure the service and the app to work with Windows Push Notification Services
(WNS).
You add the following code to the App.xaml.cs file:

You need to ensure that the app can access the push notification channel.
What should you do first?

• A.Add a call to GetChannel in the OnActivated event handler of the app.
• B.Add a call to GetChannel in the OnLaunched event handler of the app.
• C.Set the Uri property of pushChannel in the OnLaunched event handler of the app.
• D.Set the Uri property of pushChannel in the OnActivated event handler of the app.

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.)

• A.<Task Type="SystemEvent" />
• B.<Task Type="deviceUse" />
• C.<Task Type="pushNotification" />
• D.<Task Type="timer" />