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

1. You are designing a Windows application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
The business logic layer of the application is implemented by using Windows Communication Foundation (WCF).
You create a duplex bidirectional WCF service that contains a single operation. The service operation sends the result back to the client application by using a two-way callback operation.
You plan to design a service interaction strategy.
You need to ensure that deadlocks are prevented.
What should you do?

A) Configure the ServiceBehaviorAttribute attribute to use the Synchronization context in the service class.
B) Configure the ServiceBehaviorAttribute attribute to use the Reentrant or Multiple concurrency mode in the service class.
C) Configure the CallbackBehaviorAttribute attribute to use the Synchronization context in the callback class.
D) Configure the CallbackBehaviorAttribute attribute to use the Reentrant or Multiple
concurrency mode in the callback class.

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 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.

3. 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 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.
B) In the constructor of the application window, add code to load the control. Save the control to a static variable.
C) 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.
D) In the Load event of the application window, add code to load the control. Save the control to an instance variable.

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

5. You are designing a Windows Presentation Foundation (WPF) application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
During testing of the application, you identify several bottlenecks by using Windows Task Manager and Windows Performance Monitor.
You need to recommend a system test strategy that will meet the following requirements:
- Identify major application workloads.
- Identify the functions of the application that are most impacted.
Which testing strategy should you recommend?

A) Stability testing
B) Security testing
C) Scalability testing
D) Usability testing

Solutions: