You are reviewing multiple Windows Presentation Foundation (WPF) applications that capture postal addresses. The WPF applications have different appearances and functionality. Each WPF application uses a different control to visualize the captured addresses.
You plan to modify all WPF applications to allow developers to visualize addresses by using a common template.
You need to recommend an approach for standardizing the visualization of captured addresses.
What should you recommend?

• A. Use a FrameworkTemplate object.
• B. Use an ItemsPanelTemplate object.
• C. Use a ControlTemplate object.
• D. Use a DataTemplate object.

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:
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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 Load event of the application window, add code to load the control. Save the control to an instance variable.
• D. 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.

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

You are developing a Windows application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
The application will consume a Windows Communication Foundation (WCF) service. The WCF service will provide data to the application.
You plan to use the ADO.NET Entity Framework to create a data model that will be used by the application.
Another development team makes changes to the WCF service data contract.
You need to ensure that changes made to the WCF service data contract do not require the application to be recompiled.
What should you do?

• A. Create a storage model based on the schema of the existing WCF service. Update the mapping file when the new version of the WCF service is available.
• B. Create a storage model based on the business model. Use a class generated from the storage model for programming.
• C. Create a conceptual model and a storage model based on the existing version of the WCF service.
• D. Create a conceptual model based on the business model. Use a class generated from the conceptual model for programming. Update the mapping file when the new version of the WCF service is available.

You are designing a Windows Presentation Foundation (WPF) application that will be used to display real-time data from a Microsoft SQL Server 2008 database.
You need to recommend an approach for displaying the datA.
Which two actions should you recommend? (Each correct answer presents part of the solution. Choose two.)

• A. Use a System.Runtime.Caching object in the data layer with a sliding expiration, and query the database when the Cache object expires.
• B. Implement OneWay binding between the controls in the WPF application and objects in the data layer.
• C. Implement OneWayToSource binding between the controls in the WPF application and objects in the data layer.
• D. Use a SqlCacheDependency object in the data layer to query the database when a change is detected.