MCPDMCPD(70-511)單項選擇題每日一練(2019.07.28)

You use Microsoft .NET Framework 4 to create a Windows Forms application.
You write the following code segment. (Line numbers are included for reference only.)
01sealed class FormSettings :

You need to ensure that the first time each user opens the application, a text field displays the following message: "Please enter your setting."
Which code segment should you insert at line 03?（）

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You create a Button control for the application.
You need to ensure that the application meets the following requirements:
When the mouse pointer is over the Button control, the background color of the button is set to red and
the Button control appears bigger.
When the mouse pointer is not over the Button control, the button returns to its original state.
What should you do?（）

You use Microsoft .NET Framework 4 to create an application. 
The application performs resource-intensive calculations that consist of multiple layers of nested looping.
The application will be deployed to servers that contain varying hardware configurations. 
You need to ensure that the application utilizes CPU resources on the server in the most efficient manner. 
You want to achieve this goal by using the minimum amount of code. 
What should you do?（）

You are developing a Windows Presentation Foundation (WPF) application. All of the application styles are in the file name Themes.dll
You have the followiing markup segment.

BlueBackground is defined in a XAML file named BlueTheme.xaml. The XAML markup is compiled into the Themes.dll file.
You need to ensure that the XAML file is referenced so that the application can apply the settings in the BlueBackground style.（）

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. 
The application contains three text boxes named txtAddress, txtCity, and txtState. 
You need to ensure that the postal code is automatically set based on the information typed by users in the text boxes.  
You also need to ensure that the complete address is displayed in a TextBlock control. 
Which code fragment should you use?（）