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Microsoft 070-491 Exam Syllabus Topics:

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

1. You need to authenticate to a social networking site.
Which code segments should you insert at line SR40? (Each correct answer presents part of the solution. Choose all that apply.)

A) source.RequestUri,
B) WebAuthenticationOptions.None,
C) WebAuthenticationOptions.SilentMode,
D) source.RequestUri.SecureString,

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

3. You are developing a Windows Store app that will provide users with the ability to save annotations to text files.
You have the following code segment: (Line numbers are included for reference only.)

You need to add the contents of data to the beginning of file. Which code segment should you insert at line 03?

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

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

5. DRAG DROP
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:

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.)

Solutions: