You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF)
application.
You create a custom control named Wheel.
You need to ensure that the Speed property of Wheel can be animated.
What should you do?

• A. Declare an animation of the Speed property from within the code-behind file.
• B. Declare the Speed property as a dependency property.
• C. Inherit the DependencyObject class.
• D. Implement the System.Windows.Media.Animation.IAnimatable interface with the Wheel class.

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a
Windows Presentation Foundation (WPF) application.
You create a WPF window in the application.
You add the following code segment to the application.

The DataContext property of the window is set to an instance of the ViewModel class. The Data property of the ViewModel instance is initialized with a collection of BusinessObject objects.
You add a TextBox control to the window.
You need to bind the Text property of the TextBox control to the Name property of the current item of the CollectionView of the DataContext object.
You also need to ensure that when a binding error occurs, the Text property of the TextBox control is set to N/A.
Which binding expression should you use?

• A. {Binding Path=Data/Name, TargetNullValue='N/A' }
• B. {Binding Path=Data/Name, FallbackValue='N/A' }
• C. {Binding Path=Data.Name, TargetNullValue='N/A' }
• D. {Binding Path=Data.Name, FallbackValue='N/A' }

You use Microsoft .NET Framework to create a Windows Presentation Foundation (WPF) application.
You create a window that contains a Button control and a MenuItem control. Both controls are labeled "Add sugar." The Command properties of the Button and MenuItem controls are set to the same RoutedCommand named AddSugarCommand.
You write the following code segment.
Private Sub CanAddSugar(sender As Object, e As CanExecuteRoutedEventArgs)
...
End Sub
You need to ensure that when the CanAddSugar method sets e.CanExecute to false, the MenuItem and Button controls are disabled.
What should you do?

• A. Create an event handler for the CanExecuteChanged event of the AddSugarCommand command. Call the CanAddSugar method from within the event handler.
• B. Add a CommandBinding object to the CommandBindings property of the window. Set the Command property of CommandBinding to the AddSugarCommand command. Set the CanExecute property of the CommandBinding object to the CanAddSugar method.
• C. Add a CommandBinding object to the CommandBinding property of the MenuItem control. Set the CanExecute property of the CommandBinding object to the CanAddSugar method.
• D. Inherit the AddSugarCommand from the RoutedUICommand class instead of the RoutedCommand class. Call the CanAddSugar method from within the constructor of the AddSugarCommand command.

You are developing an XBAP application for your company intranet. During several development iterations, you manually copy the working executable, application, and deployment manifest files to the test Web server. You create an HTML file that has a hyperlink to the deployment manifest that you use for testing. During the next iteration, you enhance the XBAP application by making changes to the application.
When you use the hyperlink to the deployment manifest to test the deployment, you do not see the changes.
You need to ensure that the changes you make are visible when you test the deployment from your machine.
What should you do?

• A. Delete the application, deployment, and executable files from the Web server. Then rebuild the XBAP solution and manually copy the same files from the project bin directory to the Web server and click the Install hyperlink again.
• B. Delete the application, deployment, and executable files from the Web server. Then recopy the same files from the project bin directory to the Web server, restart IIS, and click the Install hyperlink again.
• C. Restart Microsoft Internet Information Services (IIS). Then click the Install hyperlink again.
• D. Open a Visual Studio command prompt and run mage -cc. Then click the Install hyperlink again.