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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) The Web API of the Windows Library for JavaScript
C) Windows Runtime Metadata (WinMD) components
D) Promises

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

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

3. 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.

4. You are developing two Windows Store apps by using JavaScript. A Source app will store sensitive customer information. A Target app will retrieve the stored information for validation and further processing.
The Source app must secure data by using a private-public key pair. Only the Target app must be able to consume data that has been secured by the Source app.
You need to ensure that the security of the data is not compromised.
What should you do?

A) Encode data to and decode data from a Base64 string.
B) Encrypt data by using an asymmetric algorithm. Decrypt data by using a symmetric algorithm.
C) Encrypt and decrypt data by using a symmetric algorithm.
D) Encrypt and decrypt data by using an asymmetric algorithm.

5. You are developing a fitness app for distribution through the Windows Store.
The app must interact with the following USB device classes:
Webcam
Infrared thermometer
Scale
Printer
----
You need to modify the app manifest file as required to support the devices.
Which two device classes should you include? Each correct answer presents part of the solution.

A) AudioVideo
B) IrDa
C) Printer
D) PersonalHealthcare

Solutions: