Microsoft MCSD 070-491

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Microsoft Recertification for MCSD: Windows Store Apps using C# Sample Questions:

1. You are developing a Windows Store app that accesses a USB Human Interface Device (HID). The app has a default page and a settings page.
You need to ensure that when a user connects the USB device, the app starts automatically and opens the settings page.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

A) Add an AutoPlay Device declaration to the app manifest.
B) Override the OnActivated method in the Application class and use the ActivatedEventArgs interface.
C) Override the OnLaunched method in the Application class and use the ApplicationViewEventArgs interface.
D) Add a File Type Associations declaration to the app manifest.
E) Add a Removable Storage capability to the app manifest.

2. You are developing a Windows Store app named VideoPlayer.
The app will provide user with the ability to select video files by using the file picker and to play the video.
You need to recommend a solution for the app that meets the following requirements:
- If the app is terminated while playing a video, the next time the app starts, the
video must play.
- The app must minimize the amount of storage space used.
- The app must NOT request any capabilities.
What should you include in the recommendation?

A) Add the file to AccessCache.StorageApplicationPermissions.MostRecentlyUsedList.
B) Store the video in ApplicationData.Current.LocalFolder.
C) Store the StorageFile.Path property in ApplicationData.Current.LocalSettings.
D) Store the video in ApplicationData.Current.RoamingFolder.

3. HOTSPOT
You need to verify whether the app conforms to the Windows Store requirements.
What command should you run? (To answer, select the appropriate options in the answer area.)

4. DRAG DROP
You are developing a Windows Store social media app. The app communicates with the server by using a secure web service.
You need to ensure that users can securely store and retrieve web service credentials. You have the following code:

Which code snippets should you insert in target 1 and target 2 to complete the code? (To answer, drag the appropriate code snippets to the correct targets in the answer area. Each code snippet 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.)

5. DRAG DROP
You need to write code for the method that will be called when a user takes a picture. (Develop the solution by arranging the code snippets. You will need all of the code snippets.)

Solutions:

Question # 1 Answer: B,C

Question # 2 Answer: A

Question # 3 Answer: Only visible for members

Question # 4 Answer: Only visible for members

Question # 5 Answer: Only visible for members