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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 main window of the WPF application includes two panels: panel1and panel2.
The WPF application must meet the following requirements:
- Panel2 must be enabled only after users have entered values into multiple text boxes in panel1. - The background color of panel2 must be set to a specific color based on oneof the text box values in panel1. - The background color of panel2 must be set at the same time the panel is enabled.
You need to recommend an approach for meeting the requirements.
What should you recommend?

A) Use a MultiDataTrigger object.
B) Use Dependency properties.
C) Use a Data Template object.
D) Use a Command object.

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

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

4. You are evaluating an existing Windows Presentation Foundation (WPF) application. The WPF application runs in a Web browser as a XAML browser application (XBAP). The WPF application runs in the Intranet zone with Full Trust. A client certificate for the WPF application has been generated.
Users are unable to access the WPF application. You locate the following message in the security log: "User has refused to grant required permissions to the application." Users state that they are clicking OK in all message boxes that appear.
You need to recommend an approach for ensuring that the WPF application runs correctly on all client computers.
Which two actions should you recommend? (Each correct answer presents part of the solution. Choose two.)

A) Use the Code Access Security Policy Tool to grant the appropriate permissions.
B) Sign the ClickOnce manifest for the WPF application.
C) Import the client certificate to the Trusted Root store.
D) Modify the ClickOnce manifest for the WPF application to grant the appropriate permissions.

5. You are designing a Windows Presentation Foundation (WPF) application.
The application calls methods that perform long-running computational tasks.
You need to recommend an approach for ensuring that the application remains responsive while the tasks are executing.
What are two possible ways to achieve this goal? (Each correct answer presents a complete solution. Choose two.)

A) Use asynchronous method calls from the user interface thread.
B) Use synchronous method calls from the user interface thread.
C) Use synchronous method calls from a thread other than the thread on which the user interface runs.
D) Run the user interface from a new multi-threaded apartment (MTA) thread.

Solutions: