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

2. DRAG DROP
You are developing a Windows Store app that will display photos that are stored on various services including Microsoft OneDrive and third-party social media sites.
You must use the WebAuthenticationBroker class to manage and provide authentication across all services. The app must support single sign-on (SSO).
You need to implement an authentication strategy for the app.
Which five actions should you perform in sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.

3. You are developing a Windows Store app. The app will allow users to upload and share
text messages.
The app must upload each message to a Windows Azure back-end database. The stored
data must be encrypted by using public/private key encryption.
You need to implement data encryption for the app. Which code segment should you use?

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

4. You are developing a Windows Store enterprise app.
The app must retrieve data from other apps asynchronously across domains by using the XMLHttpRequest object.
You need to retrieve the data.
What should you use?

A) GetResponseStream()
B) WinJS.xhr
C) HttpWebRequest
D) HTTPClient

5. 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:
- A splash screen is displayed on the device until the data is retrieved from the Internet.
- The user must be able to view weather information as soon as the data is fully available.
You need to ensure that the splash screen is displayed at startup until the app has completed loading updated data.
Which actions can you perform to achieve this goal? (Each correct answer presents a complete solution. Choose all that apply.)

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

Solutions: