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

1. You are designing an application by using Windows Presentation Foundation (WPF) and
Microsoft .NET Framework 4.
The user interface (UI) tier of the application will be implemented in WPF.
The middle tier of the application is implemented by using an existing COM component.
The middle tier contains a long-running method named ProcessDatA.
You need to ensure that users can continue to use the UI while ProcessData is running.
What should you do?

A) Use an asynchronous worker thread to call ProcessDatA.
B) Call the Run method of the Dispatcher class before invoking ProcessDatA.
C) Call the DoEvents method of the Application class before invoking ProcessDat
D) Use the Invoke method of the Dispatcher class to call ProcessDatA.

2. ---
You are designing updates to a Windows solution that processes complex scientific datA.The solution extracts analyzed data from Microsoft Excel by using an application-level add-in.
You have the following requirements:
Deploy the Excel add-in to client machines with the application.
Ensure that the solution supports Excel 2007 and Excel 2010.
Minimize the size of the deployment package.
You need to recommend an approach that meets the requirements.
What should you recommend?

A) Embed the Excel 2010 COM library.
B) Include the primary interop assembly for Excel 2007.
C) Include the primary interop assembly for Excel 2010.
D) Embed the type information from the Excel 2010 COM library.

3. You are designing a Windows Presentation Foundation (WPF) client application from which
employees will access a Web service.
Business partners will access the Web service by using proprietary client applications.
You need to recommend a solution for ensuring the integrity of data in the system.
What should you recommend?

A) Implement data validation on the client and reject invalid datA.
B) Implement data validation at the service layer and reject invalid datA.
C) Secure the Web service by using SSL.
D) Encrypt data while storing it in the database.

4. You are developing an application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
You plan to use Microsoft Sync Framework to synchronize the data stored in a local Microsoft SQL Server Compact Edition database with the data stored in a centralized SQL Server 2008 database.
Four columns are added to each table involved in the synchronization process to track changes to the database. You add the following four columns to the database table.

Users report that the synchronization process is not always successful. You need to ensure that the application synchronizes data successfully. What should you do?

A) Option B
B) Option D
C) Option A
D) Option C

5. You are preparing to deploy a solution that includes a Windows Forms application and several COM components. Unsigned interop assemblies have been created for each of the COM components.
You need to recommend an approach for deploying the solution.
What should you recommend?

A) Deploy the Windows Forms application and COM components to a folder on the client computer. Deploy the interop assemblies to the Global Assembly Cache (GAC).
B) Deploy the Windows Forms application to a folder on the client computer. Deploy the COM components and interop assemblies to the Global Assembly Cache (GAC). Register the COM components.
C) Deploy the Windows Forms application and interop assemblies to a folder on the client computer. Sign the interop assemblies.
D) Deploy the Windows Forms application, COM components, and interop assemblies to a folder on the client computer. Register the COM components.

Solutions: