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单选题
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. For interactive and self-paced preparation of exam 70-513， try our practice exams. Practice exams also include self assessment and reporting features!
C
On the client， create a proxy derived from DuplexClientBase（Of TChannel）.
D
On the client， use GetCallbackChannel（Of T）.
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更多 “单选题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. For interactive and self-paced preparation of exam 70-513， try our practice exams. Practice exams also include self assessment and reporting features!C On the client， create a proxy derived from DuplexClientBase（Of TChannel）.D On the client， use GetCallbackChannel（Of T）.” 相关考题
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单选题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
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On the client, create a proxy derived from DuplexClientBaseTChannel .D
On the client, use GetCallbackChannelT .
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