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

1. You are developing a Windows Store app by using HTML5 and JavaScript. The app has HEADER, NAV, and SECTION elements. The SECTION element displays a list of records.
The app will allow users to sort records multiple times. The app must meet the following requirements:
- Each time the user performs a sort, replace the content in the SECTION element with the sorted records. - Animate the updated content by sliding the sorted records into the SECTION element.
You need to use the WinJS library to apply the animation to the SECTION element. Which function should you use?

A) createExpandAnimation()
B) createPeekAnimation()
C) enterPage()
D) enterContent()

2. You develop a Windows Store app that allows users to modify images by using filters and image-processing algorithms.
The app must meet the following requirements:
- Use a web worker to initiate the image-processing algorithms on a separate thread. - Clean up the web worker after processing the algorithms.
You need to ensure that the web worker releases memory after processing the algorithms. What should you do?

A) From the web worker, call the GCollect method.
B) From the calling page, call the postMessage() command with the terminate parameter.
C) From the web worker, call the close() command.
D) From the calling page, call the closet) command.

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

4. HOTSPOT
You are developing 3 Windows Store app that uses a canvas object.
When the page loads, a blue rectangle must move across the canvas from left to right.
The following code calls the function to perform the animation:

You need to create the animateShape function.
How should you complete the relevant code? (To answer, select the correct code segment from each drop-down list in the answer area.)

5. DRAG DROP
You are developing a Windows Store app that streams photos to and from any Windows-compliant device on the same network.
You need to configure the Play To receiver.
How should you complete the relevant code? To answer, drag the appropriate code segments to the correct targets. 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.

Solutions: