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

1. You are designing a Windows Store app that creates large amounts of temporary binary data each time it is run.
You need to ensure that data is persisted while the app is running but deleted when the app is closed.
Which app data storage mechanism should you use? (Each correct answer presents a complete solution. Choose all that apply.)

A) a roaming app data store
B) a temporary app data store
C) the app files of the local app data store
D) the app settings of the local app data store

2. DRAG DROP
You are creating a Windows Store app that contains a StackPanel named myltemPanel. You need to ensure that myltemPanel displays contents horizontally when the device is in landscape mode and vertically when the device is in portrait mode.
You have the following code:

Which code snippets should you include in Target 1, Target 2, and Target 3 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 are developing a Windows Store app.
The app will access several web resources that use an OAuth 2.0 authentication provider.
You need to recommend in which class to store user credentials so that users do not have
to reenter their credentials when they access the web resources.
Which class should you recommend?

A) System.Net.AuthenticationManager
B) Windows.Security.Credentials.PasswordVault
C) System.Net.NetworkCredential
D) Windows.Security.Credentials.WebAccount

4. 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.)

A) Add the following line of code at line MC06.
ptMgr.DefauitSourceSelection = false;
B) Add the following line of code at line MC02.
private void ShowPlayTo()
{
Windows.Media.PlayTo.PlayToManager.ShowPlayToUI();
}
C) Add the following line of code at line MC05.
ptMgr.SourceRequested += SourceRequestHandler;
D) Add the following line of code at line MC10.
ptMgr.PlayRequested += SourceRequestHandler;

5. You are developing a Windows Store app.
You need to create a service for the app to receive push notifications from Windows Push Notification Services (WNS).
Which tool should you use?

A) The Developer Dashboard
B) The Manifest Designer
C) The Windows App Certification Kit
D) The Microsoft Visual Studio XML Editor

Solutions: