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

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

2. You need to protect the metadata for the secure documents.
Which protection descriptor should you use for the DataProtectionProvider object?

A) WEBCREDENTIALS=userrpassword
B) USER=current
C) LOCAL=user
D) SID

3. A photo competition is ending.
You need to meet the requirements when a user clicks the toast notification.
Which code segment should you use?

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

4. DRAG DROP
You are developing a Windows Store app.
The app will provide users with the ability to play music remotely on another user's device
and then the other users will guess the name of the song.
You need to access the music storage and to retrieve files and folders.
You have the following code:

Which elements should you include in Target 1, Target 2, Target 3 and Target 4 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.)

5. DRAG DROP
You are developing a Windows Store app named App1.
You need to ensure that App1 meets the following requirements:
- Must be able to display a list of items in rows and columns.
- Must be able to display items one at a time.
What should you use for each requirement? (To answer, drag the appropriate elements to the correct requirements. 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.)

Solutions: