70-491 Exam
Dec 2021 updated: Actualtests Microsoft 70-491 training 11-20
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2021 Dec 70-491 free practice exam
Q11. - (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
Q12. - (Topic 9)
You are developing a Windows Store app.
The app will access several web resources that use an OAuth 2.0 authentication provider.
You need to recommend in which class to store user credentials so that users do not have
to reenter their credentials when they access the web resources.
Which class should you recommend?
A. System.Net.AuthenticationManager
B. System.Net.NetworkCredential
C. Windows.Security.Credentials.WebAccount
D. Windows.Security.Credentials.PasswordVault
Answer: D
Explanation: The task of storing and retrieving user credentials securely and allowing user credentials roam at no cost with the user’s Microsoft account is simplified with the Credential Locker. Storing user credentials in the Credential Locker is a quick, two-step process. 1.Obtain a reference to the Credential Locker using the PasswordVault object from the Windows.Security.Credentials namespace. 2.Create a PasswordCredential object that contains an identifier for your app, the username and the password, and pass that to the PasswordVault.Add method to add the credential to the locker.
Q13. - (Topic 3)
Users report performance issues when getting the location information associated with a photo. You suspect the app is encountering performance issues in the GetLocationAsync() method of the Environment class.
You need to enhance the performance of the GetLocationAsync() method of the app.
What should you do?
A. Remove the Compass initialization from the LoadSensors() method and initialize it within the GetLocationAsync() method.
B. set the ReportInterval property of the Compass object to 16.
C. set the ReportInterval property of the Compass object to 0.
D. Move the locator variable to a class level variable and initialize it in the Environment constructor.
Answer: D
Q14. - (Topic 5)
You need to protect the metadata for the secure documents.
Which protection descriptor should you use for the DataProtectionProvider object?
A. SID
B. WEBCREDENTIALS=userrpassword
C. LOCAL=user
D. USER=current
Answer: C
Explanation: http://msdn.microsoft.com/en-us/library/windows/apps/windows.security.cryptography.dataprotection.dataprotectionprovi der.aspx
Q15. - (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
Down to date 70-491 braindumps:
Q16. - (Topic 9)
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. Webcam
B. Pictures Library
C. Proximity
D. Internet (Client & Server)
E. Private Networks (Client & Server)
F. Enterprise Authentication
Answer: A,B,D
Explanation: A: The webcam capability provides access to the webcam’s video feed, which allows the app to capture snapshots and movies from a connected webcam.
B: The picturesLibrary capability provides programmatic access to the user's Pictures, allowing the app to enumerate and access all files in the library without user interaction. This capability is typically used in photo playback apps that need to access the entire Pictures library.
D: Internet and public networks The internetClient capability provides outbound access to the Internet and public networks through the firewall. Almost all web apps use this capability. The internetClientServer capability provides inbound and outbound access to the Internet and public networks through the firewall.
http://msdn.microsoft.com/en-us/library/windows/apps/hh464936.aspx
Q17. DRAG DROP - (Topic 3)
You need to allow users to capture video instead of photos.
You have the following code:
Which code snippets should you include 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.)
Answer:
Q18. - (Topic 9)
You are developing a Windows Store app that accesses a USB Human Interface Device (HID). The app has a default page and a settings page.
You need to ensure that when a user connects the USB device, the app starts automatically and opens the settings page.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Override the OnLaunched method in the Application class and use the ApplicationViewEventArgs interface.
B. Add a File Type Associations declaration to the app manifest.
C. Add a Removable Storage capability to the app manifest.
D. Override the OnActivated method in the Application class and use the ActivatedEventArgs interface.
E. Add an AutoPlay Device declaration to the app manifest.
Answer: A,D
Explanation: http://msdn.microsoft.com/en-us/library/windows/apps/windows.ui.xaml.application.aspx
Q19. - (Topic 9)
You are developing a Windows Store app.
You create a custom control named AppSettingsFlyout, which is inherited from the SettingsFlyout control.
You need to ensure that the Settings flyout of the app is available from the charm bar.
When the flyout is dismissed, users must be returned to the Settings pane. You have the following code. (Line numbers are included for reference only.)
Which code segment should you insert at line 05?
A. updatesFlyout.Show();
B. ApplicationSettings.SettingsPane.GetForCurrentView();
C. ApplicationSettings.SettingsPane.Show();
D. updatesFlyout.Showlndependent();
Answer: A
Q20. DRAG DROP - (Topic 9)
You are developing your first Windows Store app and submitting it to the Windows Store.
The app uses a cloud server to send notifications by using Windows Push Notification
Service (WNS).
You need to authenticate the cloud server with WNS.
Which five actions should you perform in sequence? (To answer, move the appropriate
actions from the list of actions to the answer area and arrange them in the correct order.)
Answer: