Ucertify offers free demo for 70-491 exam. "Recertification for MCSD: Windows Store Apps using C#", also known as 70-491 exam, is a Microsoft Certification. This set of posts, Passing the Microsoft 70-491 exam, will help you answer those questions. The 70-491 Questions & Answers covers all the knowledge points of the real exam. 100% real Microsoft 70-491 exams and revised by experts!
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Q11. 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:
Q12. DRAG DROP - (Topic 9)
You are developing a Windows Store app.
The app has the following requirements: . Open the Search charm. . Provide query suggestions by using the GetSuggestions() method-You need to ensure that the app meets the requirements. 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.)
Answer:
Q13. - (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.
Q14. 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:
Q15. - (Topic 9)
You plan to develop a Windows Store app to create pictures.
Users of the app will be able to save the pictures that they create and to share the pictures with friends by using a web link.
You need to ensure that the friends can makes comments on the shared pictures.
Which storage technology should you use? (More than one answer choice may achieve the goal. Select the BEST answer.)
A. Roaming storage
B. Microsoft Azure blob storage
C. Microsoft Azure Mobile Services
D. One Drive
Answer: D
Q16. - (Topic 8)
You need to configure toast notifications for the photo competition. Which code segment should you use?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: B
Q17. - (Topic 9)
You are developing a Windows Store app.
The app contains a page named MainPage. The page contains a media element named videoPlayer.
You need to provide users with the ability to play the contents of videoPlayer on different devices by using the Devices charm.
Which two code segments should you add to the OnNavigateTo event handler on MainPage? (Each correct answer presents part of the solution. Choose two.)
A. Option A
B. Option B
C. Option C
D. Option D
E. Option E
Answer: B,D
Explanation: http://msdn.microsoft.com/en-us/library/windows/apps/windows.media.playto.playtosource.aspx
http://msdn.microsoft.com/en-us/library/windows/apps/windows.media.playto.playtosourceselectedeventargs.aspx
Q18. DRAG DROP - (Topic 9)
You are creating a Windows Store app that contains a StackPanel named myltemPanel. You need to ensure that myltemPanel displays contents horizontally when the device is in landscape mode and vertically when the device is in portrait mode.
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.)
Answer:
Q19. 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:
Q20. - (Topic 6)
You need to implement storage for the user preferences.
Which storage solutions can you use to meet the specification for the app? (Each correct answer presents a complete solution. Choose all that apply.)
A. TheWindows.Storage.StorageItemType object
B. TheWindows.Storage.ApplicationData.Current.RoamingSettings object
C. Windows Azure
D. The await Windows.Storage.ApplicationData.Current.LocalFolder method
Answer: A,D
Explanation: * Scenario: The app will run locally on the user's device. User preferences will be available locally.
