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

1. 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 calling page, call the closet) command.
C) From the web worker, call the close() command.
D) From the web worker, call the GCollect method.

2. You need to complete the code to start the background task.
Which code segment should you insert at line BG07?

A) Windows.ApplicationModel.Background.SystemTriggerType.internetAvailable.false
B) Windows.ApplicationModel.Background.SystemTriggerType.userPresent.true
C) Windows.ApplicationModel.Background.SystemTriggerType.userAway.false
D) Windows.ApplicationModel.Background.SystemTriggerType.servicingComplete.true

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

4. HOTSPOT
You are developing a Windows Store app that will include a <div> element.
You are applying animation to the app. The animation must provide visual feedback that
the <div> element has been tapped or clicked.
You need to implement the animation by using a JavaScript library.
How should you complete the relevant code? (To answer, select the correct code segment
from each drop-down list in the answer area.)

5. You are developing a Windows Store app.
The app must store data locally. When the app terminates, it must destroy the stored data.
You need to choose the appropriate data storage location.
Which storage location should you use?

A) roamingStorage
B) indexedDB
C) localStorage
D) sessionStorage

Solutions: