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

1. You are developing a Windows Store app that will provide users with the ability to create photos by using the hardware on a device.
Once the users create the photos, they can save the photos to the Pictures library.
If the users sign in by using a Microsoft account, they can grant other users remote access
to the photos.
You need to identify which capabilities must be enabled for the app.
Which three capabilities should you identify? (Each correct answer presents part of the
solution. Choose three.)

A) Proximity
B) Pictures Library
C) Internet (Client & Server)
D) Webcam
E) Enterprise Authentication
F) Private Networks (Client & Server)

2. You need to implement the photo viewer control to meet the requirements.
What should you do? (Each correct answer presents part of the solution. Choose all that apply.)

A) Add the themes\generic.xaml file to the project and reference it from the control.
B) Create a custom control.
C) Create a user control.
D) Create a composite control.
E) In the constructor of the class, set the value of the DefaultStyleKey to the type of the control.

3. 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) At line PA25, insert the following line of code. <Capability Name="picturesLibrary"/>
B) Move line CE09 to CE16.
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.

4. 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.)

5. You are developing a Windows Store app.
The app will store user names and passwords by using Windows Azure.
You need to recommend a method to store the passwords. The solution must minimize the likelihood that the passwords will be compromised.
Which algorithm should you recommend using?

A) 3DES
B) DES
C) AES
D) SHA512

Solutions: