Microsoft-Essentials of Developing Windows Store Apps using HTML5 and JavaScript

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Microsoft-Essentials of Developing Windows Store Apps using HTML5 and JavaScript

You are developing a Windows Store app. The app includes a handler for the datarequested event. A portion of the code for the event handler is shown in the following code segment: The app must meet the following requirements:

e.request.data.setData(url); ✘ e.request.data.setText(url); ✘ var link = new Windows.Foundation.Uri(url);e.request.data.setUri(link); ✘ var link = new Windows.Foundation.Uri(url);e.request.setLink(link); ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

You are developing two Windows Store apps named PhotoApp and PictureAlbum. The apps must meet the following requirements:

Add the Pictures Library setting to the list of declarations for PhotoApp, and add the Share Target setting to the list of capabilities for PictureAlbum. ✘ Add the Share Target setting to the list of declarations for PictureAlbum, and add the Pictures Library settingto the list of capabilities for PhotoApp. ✘ Add the Pictures Library setting to the list of capabilities for PictureAlbum, and add the Share Target settingto the list of declarations for PictureAlbum. ✘ Add the URI of PhotoApp to the Content URIs list for PictureAlbum, and add the URI of PictureAlbum to theContent URIs list for PhotoApp. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

You are planning to deploy a Windows Store app to a large number of users. The size of the app is approximately 5 GB. You need to package the app to prepare it for deployment to the Windows Store. How many packages should you use?

3 ✘ 1 ✘ 2 ✘ 4 ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

You are developing a Windows Store app by using HTML5. The app will be optimized for accessibility. The app must meet the following accessibility requirements:

Set the tabIndex attribute for interactive elements. Dynamically manage the tabIndex attribute for composite elements. Set the aria-live attribute of user interface elements to polite for important content that changes dynamically. Ensure that visible text has a minimum luminosity contrast ratio of 1:1 against the background. Implement event handlers for invoking default functionality.

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

You are developing a Windows Store app by using HTML5 and JavaScript. The app will support both the English and French languages. The app must meet the following requirements:

Specify both the element properties and the resource names of data-win-res attributes, and process the data-win-res attributes in the onactivated event. ✘ Specify only the properties of data-win-res attributes, and process the data-win-res attributes prior to theDOMContentLoaded event. ✘ Specify both the element properties and the resource names of data-win-res attributes, and process thedata-win-res attributes immediately after the DOMContentLoaded event. ✘ Specify only the resource names of data-win-res attributes, and process the data-win-res attributes in theonactivated event. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

You are developing a Windows Store app that will be used to display daily high temperatures and other weather conditions for five cities. The app must meet the following requirements:

Configure settings in the app manifest to display the splash screen until the data is fully available. Create an image that duplicates the splash screen, load the image from the dismissed event of the splashscreen, and display the image until the data is fully available. Create an image that duplicates the splash screen, and display the image by using fragment loading untilthe data is fully available. Configure settings in the app manifest to display the splash screen for 10 seconds.

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

You are developing a Windows Store app. The app will be used on devices that are capable of changing view states. The app contains the following CSS code segment. (Line numbers are included for reference only.) The app has the following requirements when the host device is in a landscape orientation:

@ device screen and (-ms-view-state: fullscreen-landscape) { ✘ @ device screen and (-ms-view-state: fullscreen-snapped) { ✘ @ media screen and (-ms-view-state: fullscreen-landscape) ✘ @ media all and (-ms-view-state: fullscreen-snapped) { ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

You are developing a Windows Store app that uses a fluid layout for all user interface elements. You need to ensure that app elements are styled appropriately based on the size and orientation of the app on the screen. Which media feature should you evaluate?

-ms-application-state ✘ resolution ✘ -ms-view-state ✘ -aspect-ratio ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

You are developing a Windows Store app by using HTML5 and JavaScript. The app will be used to display image files from a folder. The app has the following requirements:

Create a custom DataSource object. Implement only the IListDataSource interface of the DataSource object. ✘ Create a WinJS.UI.FIipView object.Bind the object to the ListView control. ✘ Create a custom DataSource object.Implement only the IListDataAdapter interface of the DataSource object. ✘ Create a WinJS.UI.StorageDataSource object.Bind the object to the ListView control. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

10.

You are developing a Windows Store app by using HTML5 and JavaScript. You need to list all the keyboard, stylus, mouse, and touch input devices that are connected to the local computer system. Which Windows library should you use?

Windows.UI.Input ✘ Windows.Media.Devices ✘ Windows.Devices.Enumeration ✘ Windows.Devices.Input ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

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