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

1. You are designing an n-tier Windows application by using Microsoft .NET Framework 4, Microsoft Visual Studio 2010, and Microsoft SQL Server 2008.
The application will replace an existing client/server application. The existing application was created by using Microsoft Visual Basic 6.0 and consists of a series of COM components that access a SQL Server database.
You plan to move the existing COM components into a Windows Communication Foundation (WCF) tier.
You need to ensure that the COM components can be replaced without impacting the existing user interface (UI) tier.
You also need to ensure that the COM components can be replaced separately.
What should you do?

A) Use .NET COM Interop on the client tier to interact directly with the COM components until they are replaced by the managed code.
B) Convert the Visual Basic 6.0 source code to managed code by using the Visual Studio converters. Use these code components on the client/server application until they are replaced individually with the new permanent managed code functionality.
C) Create a common assembly on the UI tier of the new application to interface with the COM components.
D) Create a common assembly on the WCF tier of the new application to interface with the COM components.

2. You are designing an n-tier Windows solution that includes a data entry application. The solution uses Microsoft .NET Framework 4 and Microsoft SQL Server 2008.
The data entry application sends customer orders to a middle-tier server. The middle-tier server sends orders to a set of services that perform operations on the orders. Business rules determine which services to call and whether to run them in sequence or in parallel. The business rules are complex and data dependent.
The Windows solution must meet the following requirements:
- Optimize application performance by using dynamic load balancing. - Allow for business rules to be changed at runtime.
You need to recommend an approach that meets the requirements.
What should you recommend?

A) A routed service that uses Windows Communication Foundation (WCF) messaging
B) A Windows Communication Foundation (WCF) service for each operation, with a controller class on the middle-tier server
C) SQL Server stored procedures
D) Private message queues with a controller class on the middle-tier server

3. You are developing a Windows Presentation Foundation (WPF) application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
The application will run in a partially trusted sandbox.
You plan to deploy the application on client computers by using the ClickOnce deployment technology. You plan to sign the deployment and application manifest by using a trusted publisher certificate.
You need to ensure that the following requirements are met:
- Users are not prompted for elevated permissions during application deployment.
- The application can request elevated permissions at runtime.
Where should you install the trusted publisher certificate?

A) In the trusted publisher store on the deployment server
B) In the trusted root store on each client computer
C) In the trusted publisher store on each client computer
D) In the trusted root store on the deployment server

4. You are designing a Windows Presentation Foundation (WPF) application that uses .NET Framework 4. The WPF application will be deployed to 5,000 users worldwide.
You need to recommend an approach for identifying problems that users will experience.
Which testing methodology should you recommend?

A) Usability testing
B) Functional testing
C) Integration testing
D) Acceptance testing

5. You are designing a Windows Forms application.
You intend to display graphics on a form in the application by using a third-party Windows Presentation Foundation (WPF) control.
You need to recommend a control for hosting the third-party WPF control.
What should you recommend?

A) A Panel control
B) AnElementHost control
C) A Canvas control
D) A windowsFormsHost control

Solutions: