Microsoft
70-513 · Question #276
70-513 Question #276: Real Exam Question with Answer & Explanation
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Question
You are creating an application that consumes a Windows Communication Foundation (WCF) service. The service implements the IService contract. The client application contains the CallbackHandler class, which implements IServiceCallback. You need to ensure that a client proxy is created that can communicate with the service over a duplex channel. Which code segment should you use?
Options
- ADim handler = New CallbackHandler()
- BDim handler = New CallbackHandler()
- CDim handler - New CallbackHandler()
- DDim handler = New CallbackHandler()
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