1. You are developing a Silverlight 4 application that uses commands. When a user clicks a button on the page you need to pass it the selected value of a ComboBox control named cbShapes. What should your button look like?

a.<Button Content="Get Shape" Command="{Binding GetShapeCommand}" CommandParameter="{Binding SelectedItem, ElementName=cbShapes}"/>

b.<Button Content="Get Shape" Command="{Binding GetShapeCommand}" CommandParameter="{Binding SelectedValue, ElementName=cbShapes}"/>

c.<Button Content="Get Shape" Click="{Binding GetShapeCommand}" ClickParameter="{Binding SelectedItem, ElementName=cbShapes}"/>

d.<Button Content="Get Shape" Command="{Binding GetShapeCommand}"/>

2. You are writing a Silverlight 4 application that connects to a Windows Communication Foundation (WCF) service. The WCF service is hosted on a domain different from the one running your application. When you run your application, you receive the following error: Page not found...