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Microsoft 070-491 Exam Syllabus Topics:

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

1. DRAG DROP
You are developing an augmented reality app.
You need to retrieve the direction to which the device points.
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.)

2. 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 B
B) Option C
C) Option D
D) Option A

3. You are developing a Windows Store app.
The app will access a web service.
You need to declare the web service Uniform Resource Identifier (URI).
Which file should you modify?

A) xap
B) WebConfig
C) Wsp
D) AppConfig
E) AppxManifest

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

5. You are developing a Windows Store app.
The app will store data in a text file.
You create the following method to store encrypted text in the text file:

The WriteData method writes the contents of an IBuffer object to a StorageFile object.
You need to recommend a solution to encrypt the data. The solution must minimize the use
of system resources and must ensure that the app can decrypt the data.
Which code segment should you recommend adding to line 06?

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

Solutions: