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Microsoft 70-518 Exam Syllabus Topics:

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

Question 1

You are designing a Windows Presentation Foundation (WPF) client application that requests reports from a Windows Communication Foundation (WCF) Web service.
Users must be able to perform other tasks while the WCF Web service generates the report.
You need to recommend a message exchange pattern for the communication between the WPF application and the WCF Web service.
What are two possible message exchange patterns that will meet the requirements? (Each correct answer presents a complete solution, Choose two.)

A. Datagram without session
B. Duplex
C. Datagram with session
D. Request-Response

Question 2

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

Question 3

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

Question 4

You are designing a Windows Presentation Foundation (WPF) data entry application. The application uses data binding to bind controls in the user interface (UI) to business objects. The UI uses validation rules for each input control.
The data validation rules change based on the state of the business object.
You need to recommend a validation strategy that will allow changes to the validation rules without changes to the UI code.
What should you recommend?

A. Set the ValidationStep attribute on ValidationRule elements to CommittedValue.
B. Implement the IDataErrorInfo interface in the business objects and replace all ValidationRule elements with Exception ValidationRule elements.
C. Set the ValidationStep attribute on ValidationRule elements to RawProposedValue.
D. Implement the IDataErrorInfo interface in the business objects and replace all
ValidationRule elements with Data ErrorValidat ion Rule elements.

Question 5

You are updating a Windows desktop client application that was created by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
The application displays data derived from several database queries. The display takes a long time to update.
The application currently uses a BackgroundWorker thread and a Parallel.ForEach statement on that thread.
Users have requested a modification to the program that would allow them to interrupt the display of data and begin processing a new and different query.
You decide to provide a new Stop button on the user interface (UI) to allow the user to terminate the current data display and initiate the new query. The main UI thread must be notified when the current data processing is terminated so that the new query can be started.
You need to implement the Stop button event handler.
What should you do?

A. Use the DoWork handler of the worker thread and test a shared status value.
Use a loopStatus.Stop() statement to terminate the Parallel.ForEach loop.
B. Use a CancelAsync() function to cancel the worker thread.
In the Parallel.ForEach loop, test the CancellationPending property.
If the property is set to true, perform the following tasks:
Write a loopStatus.Stop() statement.
Set the DoWorkEventArgs.Cancel property to true.
Use a return statement to exit from the loop.
C. Use the DoWork handler of the worker thread and test a shared status value.
Use a break statement to terminate the Parallel.ForEach loop.
D. Use the DoWork handler of the worker thread and test a shared status value.
Use the Thread.Abort() statement to terminate the worker thread. Start a new BackgroundWorker thread from the main UI thread.

Solutions: