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keywords: 70-513 exam,341q 70-513 exam dumps,341q 70-513 exam questions,70-513 pdf dumps,70-513 practice test,70-513 vce dumps,70-513 study guide,70-513 braindumps,TS: Windows Communication Foundation Development with Microsoft .NET Framework 4 Exam

A Windows Communication Foundation (WCF) service has a callback contract. You are developing a client application that will call this service. You must ensure that the client application can interact with the WCF service. What should you do?

A.    On the OperationContractAttribute, set the AsyncPattern property value to true.
B.    On the OperationContractAttribute, set the ReplyAction property value to the endpoint address of the client.
C.    On the client, create a proxy derived from DuplexClientBase<TChannel>.
D.    On the client, use GetCallbackChannel<T>.

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