What feature of .NET 3.5 is used in the application?
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WPF
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Silverlight
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WCF
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ADO.NET Entity Framework
C
Correct answer
Explanation
WCF (Windows Communication Foundation) is a framework for building service-oriented applications in .NET 3.5. It enables secure and reliable communication across different platforms, making it suitable for web services and distributed applications. WPF is for UI applications, Silverlight for rich web applications (deprecated), and ADO.NET Entity Framework for data access.