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

1. You are developing a Windows Store app.
The app contains a page named MainPage. The page contains a media element named videoPlayer.
You need to provide users with the ability to play the contents of videoPlayer on different devices by using the Devices charm.
Which two code segments should you add to the OnNavigateTo event handler on MainPage? (Each correct answer presents part of the solution. Choose two.)

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

2. DRAG DROP
You are developing a Windows Store app.
The app has the following accessibility requirements: - The automation name of each text box must be the same as the text box caption. - Each Label element must be associated with its corresponding text box. You need to create an interface that meets the requirements.
You have the following code:

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.)

3. 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) Internet (Client)
C) SSL Certificates
D) Default Windows Credentials

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

5. You place a breakpoint at line MP31 in the app.
When you debug the app, the debugger continuously catches a
System.UnauthorizedAccess exception.
You need to resolve the exception.
What should you do?

A) Move line CE09 to CE16.
B) At line PA25, insert the following line of code. <Capability Name="picturesLibrary"/>
C) At line MP10, change the code segment to the following line of code. read if(cameraUI != null)
D) Wrap lines CE43 through CE46 in a try-catch statement.

Solutions: