單項選擇題

A Windows Communication Foundation （WCF） solution exposes the following contract over an HTTP connection. Function GetData（） As String End Interface 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.

你可能感興趣的試題

單項選擇題

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）.

單項選擇題

You are creating a Windows Communication Foundation （WCF） service that implements operations in a RESTful manner.You need to add a delete operation. You implement the delete method as follows. string void DeleteItems（string id）；You need to configure WCF to call this method when the client calls the service with the HTTP DELETE operation. What should you do？（）

A. Add the WebInvoke（UriTemplate = "/Items/{id}"，Method="DELETE"） attribute to the operation.
B. Add the HttpDelete attribute to the operation.
C. Replace the string parameter with a RemovedActivityAction parameter.
D. Replace the return type with RemovedActivityAction.

你可能感興趣的試題

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 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？（）