70-491 Exam
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2021 Dec 70-491 practice exam
Q41. - (Topic 9)
You are developing a Windows Store app that allows users to record audio and video files and save them to their devices.
You have the following requirements:
. The audio and video files must be shorter than three minutes in duration.
. The app must finalize recording automatically when the time limit is reached.
. You cannot use continuous polling to test when the time limit is reached.
You need to ensure that the app meets the requirements.
What should you do?
A. Handle the RecordLimitationExceeded event.
B. Assign a handler lo the DefaultAudioCaptureDeviceChanged event.
C. Handle the AudioTransferRequested event.
D. Call the StopRecordAsyncO method.
Answer: C
Q42. - (Topic 4)
You need to create the ButtonForegroundColor resource.
Which code segment should you insert at line XA09?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: A
Explanation:
* Create a resource named ButtonForegroundColor to implement the button foreground color so that it can be referenced in XAML by using the following standard syntax: Foreground-"{StaticResourceButtonForegroundColor}"
* SolidColorBrush
Q43. - (Topic 7)
You need to implement a custom control to display thumbnail images of video clips. Which code segment should you use?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: C
Explanation: http://msdn.microsoft.com/en-us/library/windows/apps/windows.ui.xaml.controls.control.defaultstylekey.aspx
Q44. DRAG DROP - (Topic 9)
You are developing a Windows Store app that uses a light sensor to detect and respond to light changes. An object named lightSensor is an instance of the sensor service.
The light sensor must detect changes once per second. If the sensor is unable to record as fast as once per second, then it must use the fastest interval possible.
You need to ensure that the app meets the requirements. 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:
Q45. - (Topic 9)
You are developing a Windows Store app.
The app contains a page named MainPage. The page contains a media element named videoPlayer and a button named btnPlayTo. You need to provide users with the ability to select a device that will display the contents of
videoPlayer when they click btnPlayTo.
Which code segment should you add to the Click event handler of btnPlayTo?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: D
Explanation: http://msdn.microsoft.com/en-us/library/windows/apps/windows.media.playto.playtomanager.showplaytoui.aspx
Most recent 70-491 exam cost:
Q46. - (Topic 9)
You are developing an app that will be used to purchase and share music. Users will be allowed to share only content that they have purchased.
You need to display a message within the Share charm when users attempt to share content that they have not purchased.
What should you do?
A. Use a toast notification.
B. Use the SetText() method of the DataPackage object.
C. Set the LegalInformation property of the DataPackage object.
D. Use the FailWithDisplayText() method of the DataRequest object.
Answer: D
Explanation: Use the FailWithDisplayText method when your app is unable to supply a DataPackage to a target app. This method cancels the share operation and supplies a text message to the target app. The target app can then display this text to the user to explain why the share operation failed.
Q47. - (Topic 9)
You are developing a Windows Store app that includes the following controls:
. The ApplicationView control, which is entirely opaque, displays content that the app displays under normal circumstances.
. The MessageView control, parts of which are transparent displays information messages in exceptional circumstances.
You are creating an app page that includes the ApplicationView and MessageView controls.
When both controls are visible, you have the following requirements:
. The controls must expand to fill the entire page. . The ApplicationView control must be recognizable through the transparent portions of the MessageView control.
You need to create the page content.
Which code segment should you use?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: A
Q48. DRAG DROP - (Topic 9)
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.)
Answer:
Q49. HOTSPOT - (Topic 9)
You are developing a Windows Store app.
The app receives badge notifications from Windows Push Notification Services (WNS).
You configure the app to establish a communication channel with WNS. You use a variable named pushChannel to store the notification channel object used for communication. You add the following line of code to the app:
Which code snippets should you insert in Target 1, Target 2 and Target 3 to complete the code? (To answer, select the correct code snippet from each drop-down list in the answer area.)
Answer:
Q50. DRAG DROP - (Topic 2)
You add a MediaElement named VideoTour and a button named playToButton to the
properties details page.
You need to ensure that video tours can be played to other devices.
You have the following code: (Line numbers are included for reference only.)
Which elements should you include in Target 1, Target 2 and Target 3 to complete the code? (To answer, drag the appropriate elements to the correct targets in the answer area. Each element 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: