Microsoft Advanced Windows Store App Dev using HTML5 and JavaScript Sample Questions:

1. You are developing a Windows Store app that will access a device's webcam. All necessary device capabilities have been declared in the app manifest.
The app must not throw an error if the user has declined or revoked permission to the webcam.
You need to identify whether the app has permission to use the webcam.
What should you do?

A) Using the CameraCaptureUI class, test for the value returned by the CaptureFileAsync method.
B) Using the MediaCapture class, test for the value returned by the MediaCaptureSettings property.
C) Using the CameraCaptureUI class, test for the value returned by the videoSettings property.
D) Using the MediaCapture class, test for the value returned by the async method.

2. You are developing a Windows Store app that will display a greeting. You use the following JavaScript code to localize app content;

You plan to move the localization functionality from the JavaScript code to the HTML markup.
Which HTML markup segment should you use to localize the greeting?

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

3. DRAG DROP
You are developing a Windows Store app that will display a list of items. Users should be able to expand any list item to display valid actions for that item.
The JavaScript code includes the following elements:
elemExpand represents the element to be expanded.
elemAffected represents the adjacent element.
You need to animate the expansion action when the user clicks a list item.
Which three code segments should you use in sequence? To answer, move the appropriate code segments from the list of code segments to the answer area and arrange them in the correct order. 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 are developing a Windows Store app that will allow users to take photos by using the built-in device camera. The app will immediately open the photo for editing.
You need to programmatically specify the location from which to open the most recent photo taken by the app.
What is the best option to achieve the goal? More than one answer choice may achieve the goal. Select the BEST answer.

A) KnownFolders.pictureslibrary
B) KnownFolders.savedPictures
C) SkyDrive.Pictures
D) KnownFolders.cameraRoll

5. You are developing a custom tooltip control that inherits from an existing WinJS tooltip control. The custom control overrides the open ( ) method of the base control to extend the functionality. The following code segment depicts the structure of the method override.
Open: function (type) {
}
You need to ensure that the base method executes at the start of the override.
Which code segment should you use to call the base method?

A) this.base.open ( ) ;
B) this.prototype.open( );
C) this .super.open ( ) ;
D) base.open( ) ;

Solutions: