70-491 Exam
Regenerate 70-491: Examcollection real practice from 11 to 20
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Q11. - (Topic 9)
You are developing a Windows Store app named GeoLoc. You have the following code:
When you run the app on some devices, you receive the following error message: "An exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll but was not handled in user code."
You need to resolve the issue that causes the exception to occur.
Which file should you modify?
A. Package.appxmanifest
B. Assemblyinfo.es
C. App.xaml
D. Geoloc.csproj
Answer: A
Q12. DRAG DROP - (Topic 9)
You are developing a Windows Store app that uses the Windows Push Notification Service (WNS) to provide real-time updates to users. The app uses an HTTP request to authenticate a cloud service to interact with WNS.
The Package Security Identifier (SID) prefix is app://.
Parameter values must be URL encoded.
You need to ensure that the authentication request provides the required parameters.
Which parameters should you use? (To answer, drag the appropriate parameters to the correct location or locations. Each parameter 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.)
Answer:
Q13. - (Topic 9)
You are developing a Windows Store app that will be used to access large files stored
online.
The files will be shared between users worldwide.
You need to recommend a solution to ensure that the users can download the files as quickly as possible.
Which storage solution should you recommend?
A. OneDrive
B. Microsoft Azure Mobile Services
C. A roaming folder
D. Microsoft Azure Content Delivery Network (CDN)
Answer: D
Q14. HOTSPOT - (Topic 1)
You need to write code to comply with the search requirements of the item detail page.
You have the following code:
Which code snippets should you insert in Target 1, Target 2, Target 3, and Target 4 to complete the code? (To answer, select the correct code snippet from each drop-down list in the answer area.)
Answer:
Q15. HOTSPOT - (Topic 9)
You plan to develop several Windows Store apps.
You plan to use a CheckBox control in all of the apps. The CheckBox control will use a custom visual display.
You create XAML markup to customize the control. The code contains all of the necessary visual components for the control, including elements named checkedGlyph and indeterminateGlyph.
You need to ensure that the check box meets the following requirements:
. If a value for the check box was NOT set, the check box must display indeterminateGlyph.
. When the check box is selected, the check box must display checkedGlyph.
. If the check box is cleared, the check box must NOT display any glyphs.
You have the following XAML markup:
Which code snippets should you insert in Target 1, Target 2, Target 3, Target 4, Target 5 and Target 6 to complete the XAML markup? (To answer, select the correct code snippet from each drop-down list in the answer area.)
Answer:
Q16. - (Topic 9)
You are developing a Windows Store app that will provide users with the ability to subscribe to content by using in-app purchases.
You need to test the in-app purchase functionality of the app before you deploy the app to the Windows Store.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Modify the Package.appxmanifest file.
B. Use the CurrentAppSimulator class.
C. Modify the App.xaml file.
D. Modify the Windowsstoreproxy.xml file.
E. Use the CurrentApp class.
Answer: B,E
Q17. DRAG DROP - (Topic 5)
You need to meet the app caching requirements.
Which caching technique should you use in each scenario? (To answer, drag the appropriate technique to the correct scenario. Each technique 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.)
Answer:
Q18. - (Topic 9)
You are developing a Windows Store app to view MP4 videos.
You need to ensure that when a user double-clicks an MP4 file, the app starts and plays
back the video automatically.
Which two actions should you perform? (Each correct answer presents part of the solution.
Choose two.)
A. Add the Videos Library capability to the Appxmanifest file.
B. Modify the OnActivated event of the App.xaml.cs file to pass ProtocolActivatedEventArgs to the page if ActivatedEventArgs.Kind == ProtocolActivatedEventArgs.
C. Add a File Type Associations declaration to the Appxmanifest file.
D. Add an OnFileActivated event handler to the App.xaml.cs file.
E. Add an AutoPlay Content declaration to the Appxmanifest file.
Answer: C,D
Explanation: http://msdn.microsoft.com/en-us/library/windows/apps/xaml/jj191724.aspx
Q19. - (Topic 5)
You need to enable the capabilities that allow communication according to the technical requirements.
Which capabilities should you enable? (Each correct answer presents part of the solution. Choose all that apply.)
A. Shared User Certificates
B. SSL Certificates
C. Internet (Client)
D. Default Windows Credentials
Answer: B,C
Explanation: B: From scenario:
Communication between the app and e-book vendors must occur over an encrypted
communication channel.
Communication must use certificates to enable the SSL connection.
C:
http://msdn.microsoft.com/en-us/library/windows/apps/Hh770532.aspx http://msdn.microsoft.com/en-us/library/windows/apps/Hh986970.aspx
Q20. DRAG DROP - (Topic 9)
You are developing a Windows Store app that provides users with the ability to make short audio recordings if an audio device is available.
You need to ensure that the users can replay the audio recording before they save the recording.
You have the following code: (Line numbers are included for reference only.)
Which code segments should you insert at lines 02, 07 and 10? (To answer, drag the appropriate code segments to the correct locations. Each code segment 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.)
Answer: