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Exam Code: 70-482
Exam Name: Advanced Windows Store App Development Using HTML5 and JavaScript
Certification Provider: Microsoft
Corresponding Certifications: MCSD, MCSD: Windows Store Apps

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QUESTION 91
You are developing a Windows Store app by using JavaScript.
The app will be used in multiple geographic locations.
The app implements character grouping.
You need to ensure that the app can access only the first character group.
Which code segment should you use?

A.    var item = new Windows.Globalization.Collation.CharacterGroupings ( ) .getAt (1);
B.    var item = new Windows.Globalization.Collation.CharacterGroupings( ) .lookup(“1”);
C.    var item = new Windows.Globalization.Collation.CharacterGroupings( ) .first( );
D.    var item = new Windows.Globalization.Collation.CharacterGrouping( ) .first;

Answer: C

QUESTION 92
You are developing a Windows Store app by using JavaScript.
The app persists a list of stocks in the app’s settings.
The stock list is identified by a key of stockList.
The app must allow users to remove their stock lists from the app’s settings.
The following function call removes the stockList setting:
deleteAppSetting(“stockList”) ;
You need to remove only stockList from the settings storage without disrupting other settings.
Which code segment should you use?


A.    Option A
B.    Option B
C.    Option C
D.    Option D

Answer: D

QUESTION 93
Hotspot Question
You are developing a Windows Store app by using JavaScript.
The app will be used to create video blogs.
The app uses the device’s internal camera.
The app must meet the following requirements:
– Allow the user to record audio and video.
– Save files in the .mp4 file format.
– Store files in the user’s Videos library.
You need to ensure that the app meets the requirements.
How should you complete the relevant code? (To answer, select the correct code segment from each drop-down list in the answer area.)

Answer:

QUESTION 94
You are developing a Windows Store app by using JavaScript.
The app will allow users to customize various features.
The customizations will be persisted by using the saveMySettings function
You need to persist the customizations.
Which code segment should you use?


A.    Option A
B.    Option B
C.    Option C
D.    Option D

Answer: A

QUESTION 95
Hotspot Question
You are developing a Windows Store app by using JavaScript.
The app will be used in multiple geographic regions.
You need to ensure that the app displays dates in the region-specific full date format.
How should you complete the relevant code? (To answer, select the correct code segment from each drop-down list in the answer area.)

Answer:

QUESTION 96
Drag and Drop Question
You are developing a custom date picker control for a Windows Store app.
The control must meet the following requirements:
– Inherit from the WinJS DatePicker control.
– Provide an additional property to set if the date selection is required.
You need to ensure that the requirements are met.
How should you complete the relevant code? (To answer, drag the appropriate code segments to the correct locations in the answer area. 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.)

Answer:

QUESTION 97
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 postMessage() command with the clean parameter.
C.    From the web worker, call the close() command.
D.    From the calling page, call the postMessage() command with the close parameter.

Answer: C
Explanation:
In Internet Explorer 10 and Windows Store apps using JavaScript, the Web Workers API supports the following method .
void close();
MethodDescription: Terminates the worker thread.
Note: Internet Explorer 10 and Windows Store apps using JavaScript introduce support for Web Workers. The Web Workers API defines a way to run scripts in the background.

QUESTION 98
Hotspot Question
You develop a Windows Store app by using JavaScript.
The app displays a list of video controls.
The user can add video controls to the list.
You need to animate the video control list when the user adds a control to the list.
How should you complete the relevant code? (To answer, select the correct code segment from each drop-down list in the answer area.)

Answer:

QUESTION 99
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.    Synchronous calls
B.    The Web Worker API
C.    The Task.Run method
D.    Windows Runtime Metadata (WinMD) components

Answer: B

QUESTION 100
Hotspot Question
You are creating a Windows Store app by using JavaScript.
You need to ensure that the app can receive push notifications from a calling app.
How should you complete the relevant code? (To answer, select the appropriate method from the drop-down list in the answer area.)

Answer:


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