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Microsoft Recertification for MCSD: Windows Store Apps using HTML5 Sample Questions:

1. In the following code segment, three functions return WinJS.Promise objects.

You need to chain the promise operations to optimize error handling. Which code segment should you use?

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

2. You are creating a Windows Store app for a retail business. You must enumerate the available human interface devices (HIDs) on the client computer.
You need to use the Windows.Devices.HumanInterfaceDevice namespace to detect the available devices.
What types of devices can you detect?

A) A Bluetooth-enabled joystick that uses a native Windows 8.1 device driver
B) A wireless router
C) The built-in GPS on a mobile device
D) An internal camera device

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

4. You need to implement the file storage solution for equipment drivers and updates.
What should you do?

A) Use the Live Connect REST API to map a default file storage location.
B) Map a KnownFolder as the local default file storage location.
C) Map the inspector's Documents folder as the default file storage location.
D) Map the inspector's OneDrive folder as the default file storage location.

5. HOTSPOT
You are developing an app that provides sports statistics updates to a Windows tile. You are using Windows Push Notification Services (WNS) to provide updates to the app. You must implement the steps to request a notification channel as illustrated in the following image.

You need to ensure that the app implementation follows current Windows Store requirements and guidelines.
Select the correct answer from each list based on the information presented in the screenshot. Each correct selection is worth one point.

Solutions: