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

1. You develop a Windows Store app.
The app user interface is slow to load, and occasionally stops responding.
You need to increase the responsiveness of the user interface.
What should you implement?

A) TheTask.Run method
B) Windows Runtime Metadata (WinMD) components
C) The Web API of the Windows Library for JavaScript
D) Promises

2. You need to ensure that the settings for the About page meet the business requirements.
Which attribute should you add to the DIV element in line AB07?

A) data-win-options="{size:'narrow'}"
B) data-win-options="{width:'narrow'}"
C) data-win-options="{width:'346'}"
D) data-win-options={size:'346'}"

3. You need to implement the code to meet the search requirements. Which code segment should you insert at line NP11?

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

4. You need to ensure that inspectors can manage tasks that are assigned to them. Which code segment should you insert at line BT22?

A) BackgroundTask.unregisterBackgroundTasks(sender.BackgroundTaskName);
B) BackgroundTask.unregisterBackgroundTasks(BackgroundTask.TaskName);
C) BackgroundTask.unregisterBackgroundTasks(e.BackgroundTaskName);
D) BackgroundTask.unregisterBackgroundTasks(BackgroundTask.BackgroundTaskName);

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

Solutions: