You are developing a Windows Store app that uses a webcam. You need to be notified if new
webcams are connected to the system.
Which class should you use?

DRAG DROP
You are developing a Windows Store app that downloads large files from the Internet by using
background tasks.
The app includes the following:
tasklnstance is an instance of the IBackgroundTask interface that provides access to a background
task instance.
DownloadFilesAsyncQ is the asynchronous method that performs the download.
You need to ensure that the app performs the download operation asynchronously in a background
task.
Which three 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,)

HOTSPOT
You are developing a Windows Store app. The app has the following requirements:
It must allow users to choose contacts by using a ContactPicker class.
It must continue to be responsive while the ContactPicker class is displayed.
You need to ensure that the ContactPicker class is displayed to meet the requirements.
How should you complete the code segment? (To answer, select the appropriate line of code from
each drop-down list in the answer area.)

You are designing a Windows Store app to manage image and video files.
The app must meet the following requirements:
Video files must be stored locally on each device.
The app must use local storage for data caching.
User settings must be shared across multiple devices.
Image files must be available across multiple devices.
Metadata for images must be stored in a central database.
Image files, video files, and their associated metadata must load as quickly as possible.
You need to identify which data must be cached based on the app requirements.
Which two types of data should you identify? (Each correct answer presents part of the solution.
Choose two.)

DRAG DROP
You are developing a Windows Store app.
You need to create an animation that moves a rectangle horizontally across the screen by using a
storyboard.
What should you do? (To answer, drag the appropriate option to the correct location or locations in
the answer area. Each option 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.)

You are developing a Windows Store app for devices connected to AC power.
The app must meet the following requirements:
The app must download movie reviews from a web service once per hour.
The app must have new movie reviews ready for the user when the user interacts with the app.
The app cannot interact with the lock screen.

You need to ensure that the web service is called periodically whether the app is running or
suspended.
What should you do?

You are developing a Windows Store app. The app will receive push notifications from the Windows
Push Notification Services (WNS).
You store the secret for authentication in a variable named encodedSecret. You store the security ID
for authentication in a variable named encodedSid. Both variables contain string data encoded for
use in a Uniform Resource Identifier (URI).
You create a WebClient object named client.
You need to use the client object to retrieve an OAuth token as a string and to store the string in a
variable named response.
Which code segment should you use?

You are developing a Windows Store app that will provide users with the ability to create photos by
using the hardware on a device.
Once the users create the photos, they can save the photos to the Pictures library.
If the users sign in by using a Microsoft account, they can grant other users remote access to the
photos.
You need to identify which capabilities must be enabled for the app.
Which three capabilities should you identify? (Each correct answer presents part of the solution.
Choose three.)

You are developing a Windows Store app.
You need to ensure that the app can run only if the device is located in a specified location. If the
device is moved from the location while the app is running, the app must be disabled.
What should you use? (More than one answer choice may achieve the goal. Select the BEST answer.)

You plan to create a custom panel that displays a pie chart. Each value of the pie chart will have a
control.
You need to register a custom dependency property to the panel.
Which code segment should you use?