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Microsoft PRO: Design & Develop Wndws Apps Using MS .NET Framework 4 Sample Questions:

1. You are working with an existing Windows Presentation Foundation (WPF) application in Microsoft Visual Studio 2010. The WPF application requires approximately one minute to initialize before displaying its main window.
You have the following requirements:
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Immediately display a splash screen when the WPF application launches. Allow for the display of an initialization progress bar on the splash screen. Close the splash screen when the WPF application is ready to display the main window.
You need to recommend an approach for meeting the requirements.
What should you recommend?

A) Create a SplashScreen object. Display the object in the code-behind of the App.xaml file.
B) Launch a custom splash screen by using a Window object. When the initialization completes, launch the main window from the splash screen.
C) Compile an image into the WPF application with a Build Action value of SplashScreen.
D) Move the initialization code to the code-behind of the main window.

2. You are designing a Windows Presentation Foundation (WPF) application.
The application calls methods that perform long-running computational tasks.
You need to recommend an approach for ensuring that the application remains responsive
while the tasks are executing What are two possible ways to achieve this goal? (Each correct answer presents a complete solution. Choose two.)

A) Use asynchronous method calls from the user interface thread.
B) Use synchronous method calls from the user interface thread.
C) Use synchronous method calls from a thread other than the thread on which the user interface runs.
D) Run the user interface from a new multi-threaded apartment (MTA) thread.

3. You are designing a Windows Forms application that allows users to search a product catalog and place orders.
You have the following requirements:
--
Display a progress indicator while the application is searching the catalog. Ensure that users can cancel search operations.
You need to recommend an approach that meets the requirements.
What should you recommend?

A) Execute the search on the user interface thread. Provide a Cancel button to cancel the search.
B) Implement the search as a Windows Communication Foundation (WCF) service by usingthe AsyncPattern property of the OperationContractattribute.
C) Implement the search as a duplex service.
D) Use a BackgroundWorker component to perform the search.

4. You are designing a complex and critical Windows desktop application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
You plan to implement a logging strategy for the application.
You need to record all unexpected errors that occur in the application.
What should you do?

A) Subscribe to the unhandled exception event handler for the application's dispatcher on the main application thread.
Record relevant application-specific information to an external log.
B) Subscribe to the unhandled exception event handler for the AppDomain object.
Record relevant application-specific information to an external log.
C) Create a global WIN 32 unhandled exception filter.
Record relevant application-specific information to an external log from within the filter.
D) Create a generic catch (Exception e) block in the Main method of the application.
Record relevant application-specific information to a log in the Main method.

5. You are designing a Windows Presentation Foundation (WPF) application. The application data files have the file name extension.abc.
The WPF application installer must meet the following requirements:
----
Add a shortcut to the desktop.
Install infrequently used assemblies on demand.
Associate the .abc file name extension with the WPF application.
Roll back the installation in the event of a failure.
You need to recommend a deployment method.
What should you recommend?

A) XCopy
B) Windows Installer
C) Background Intelligent Transfer Service (BITS)
D) ClickOnce

Solutions: