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

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

2. You are designing an application by using Windows Presentation Foundation (WPF) and Microsoft .NET Framework 4.
You create a control named HelpViewer to view the Help documentation of the application. The HelpViewer control must be available to all windows in the application.
You need to ensure that the application allows users to perform the following tasks:
- Bookmark their location in the documentation and return to the bookmark from any
window.
- Hide the HelpViewer control.
- Dock the HelpViewer control.
You create a main window as a base class.
What should you do next?

A) Add the HelpViewer control and a Frame control to a DockPanel control to the window at runtime.
Create all other windows in the application as pages and host them in the Frame control.
B) Add the HelpViewer control to the window at runtime.
Inherit all other window classes in the application from the main window base class.
C) Add the HelpViewer control to a DockPanel control at runtime.
Inherit all other window classes in the application from the main window base class.
D) Add the HelpViewer control and a Frame control to a StackPanel control to the window at runtime.
Create all other windows in the application as pages and host them in the Frame control.

3. ---
You are designing a .NET Framework 4 solution. The solution contains a Windows Presentation Foundation (WPF) application and a Windows Communication Foundation (WCF) Web service.
The WPF application uses the WCF Web service to store data in a Microsoft SQL Server 2008 database.
You have the following requirements:
Ensure that the WPF application functions while users' computers are offline.
Minimize the time spent sending data to the WCF Web service.
Minimize disk space requirements for data storage.
You need to recommend an approach for synchronizing data between the WPF application and the database.
Which two actions should you recommend? (Each correct answer presents part of the solution. Choose two.)

A) Create a local caching solution that periodically checks for Internet connectivity, uses local memory, and batches changes to the WCF Web service.
B) Store data in custom business objects. Serialize data locally by using custom serialization.
C) Create a local caching solution that periodically checks for Internet connectivity and writes directly to the local data store and to the WCF Web service.
D) Store data in DataSet objects. Serialize data locally by using XML serialization.

4. You are designing a Windows application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
You plan to implement control caching to improve the loading time of a control. It is not required to refresh the content of the control after the application loads.
The application will be compiled by using the .NET 4 client profile.
You need to ensure that the following requirements are met:
--
The control is reusable in multiple forms.
Data in the control is cached when the application is loaded.
What should you do?

A) In the constructor of the application window, add code to load the control. Save the control to the cache by using objects in the System.WeCaching namespace.
B) In the constructor of the application window, add code to load the control. Save the control to a static variable.
C) In the Load event of the application window, add code to load the control. Save the control to an instance variable.
D) In the Load event of the application window, add code to load the control. Save the control to the cache by using objects in the System.WeB.Caching namespace.

5. You are reviewing an existing Windows application that uses .NET Framework 4.
When the user clicks a button, the application sequentially processes thousands of image
files contained in a directory.
The user interface becomes unresponsive while the application processes the files.
You have the following requirements:
---
Modify the button's click event.
Increase application throughput by processing multiple image files concurrently.
Ensure that the user interface remains responsive while the application processes
the image files.
You need to recommend an approach for meeting the requirements.
What should you recommend?

A) Iterate over the image files by using the Parallel.ForEach() method. For each image file, start a separate thread that processes the image file, by using the Thread.Start()method.
B) Use the ThreadPool.QueueUserWorkItem() method to queue up a single work item that uses the Parallel.ForEach () method to process the image files concurrently.
C) Iterate over the image files. For each image file, use the Process.Start() method to launch a console application that processes the image file.
D) Use the Parallel.ForEach() method to process the images concurrently.

Solutions: