Microsoft Recertification for MCSD: Windows Store Apps using HTML5 : 070-490

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Microsoft 070-490 Exam Syllabus Topics:

Microsoft Recertification for MCSD: Windows Store Apps using HTML5 Sample Questions:

1. DRAG DROP
You need to ensure that product images are displayed according to the requirements.
Which attributes should you use? (To answer, drag the appropriate attributes to the correct locations in the answer area. Each attribute 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 develop a Windows Store app that allows users to modify images by using filters and image-processing algorithms.
The app must meet the following requirements:
- Use a web worker to initiate the image-processing algorithms on a separate thread. - Clean up the web worker after processing the algorithms.
You need to ensure that the web worker releases memory after processing the algorithms. What should you do?

A) From the calling page, call the postMessage() command with the terminate parameter.
B) From the web worker, call the GCollect method.
C) From the calling page, call the closet) command.
D) From the web worker, call the close() command.

3. DRAG DROP
You are developing a Windows Store app. The app will enable users to read e-books.
Users must be able to lock the app orientation so that rotating the device does not change the app display.
You need to implement the code for locking and unlocking the orientation.
How should you complete the relevant code? To answer, drag the appropriate code segments to the correct targets. 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.

4. You develop a Windows Store app.
You need to ensure that the app will pass certification and successfully run on Windows RT devices.
What is the best approach to achieve the goal? More than one answer choice may achieve the goal. Select the BEST answer.

A) Test the app on an x86 development device in emulated mode by using Windows App Certification Kit for Windows RT.
B) Register the app in the Windows Store and run the Application Verifier for Windows on the uploaded app.
C) Test the app on an x86 development device by using the Windows App Certification Kit.
D) Test the app on a Windows RT device by using the Windows App Certification Kit for Windows RT.

5. In the following code segment, three functions return WinJS.Promise objects.

You need to chain the promise operations to optimize error handling. Which code segment should you use?

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

Solutions: