You are developing a Windows Store app. The following code is provided as part of an RSS feed reader. You need to create an asynchronous method that reports progress and allows cancellation. Which three actions should you perform in sequence?…

You create a class in a namespace named BacJcgrounaTasics by using the following signature: Public sealed class GetLatestPricesBackgroundTask : IBackgroundTask The background task connects to a service to retrieve the latest price of the stock information used by an app.…

You are developing a Windows Store app that writes data to a file. You have the following requirements: If a file exists with the same name, it should be overwritten by the new file. The data must be stored in…

You are developing a Windows Store app. The app must receive push notifications from a calling app by using Windows Push Notification Service (WNS). You have the following code: Which code snippets should you insert in Target 1 and Target…

You are developing a Windows Store app that uses a light sensor to detect and respond to light changes. An object named lightSensor is an instance of the sensor service. The light sensor must detect changes once per second. If…

You are developing a Windows store app that requires text documents. The documents are loaded from a web service and are often larger than 5 MB. The users of the app travel between offices that are located on different continents.…

You are developing a Windows Store app. You need to use text resources in the app for localization. You have the following code: Which code snippets should you include in Target 1, Target 2 and Target 3 to complete the…

You plan to deploy an app to the Windows Store. The app will have a trial mode of 30 days. You need to develop a solution that displays a notification on the main page that shows the number of days…

You are developing a Windows Store app that logs error information to be used for troubleshooting. You need to create a log that will contain the events to be used by Event Tracing for Windows (ETW). You have the following…

You need to develop an app to measure whether a surface is level. The app will be used on devices that have a gyrometer. You have the following code: Which code snippets should you include in Target 1, Target 2…