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A Windows Communication Foundation (WCF) solution exposes the following contract over an HTTP connection.[ServiceContract]public interface IDataService{ [OperationContract] string GetData();}Existing clients are making blocking calls to GetData. Calls to GetData take five seconds to complete.You need to allow new clients to issue non-blocking calls to get the data, without breaking any existing clients. What should you do?（）
A.
B.
C.Generate a proxy class with asynchronous methods and use it for the new clients
D. Add a new endpoint to the service that uses a full-duplex binding and use it for the new clients.
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更多 “ A Windows Communication Foundation (WCF) solution exposes the following contract over an HTTP connection.[ServiceContract]public interface IDataService{ [OperationContract] string GetData();}Existing clients are making blocking calls to GetData. Calls to GetData take five seconds to complete.You need to allow new clients to issue non-blocking calls to get the data, without breaking any existing clients. What should you do?（）A.B.C.Generate a proxy class with asynchronous methods and use it for the new clientsD. Add a new endpoint to the service that uses a full-duplex binding and use it for the new clients. ” 相关考题
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