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1 A Windows Communication Foundation （WCF） service exposes two operations： OpA and OpB. OpA needs to execute under the client’s identity， and OpB needs to execute under the service’s identity. You need to configure the service to run the operations under the correct identity. What should you do？（）

2 Windows Communication Foundation （WCF） application uses a data contract that has several data members. You need the application to throw a Serialization Exception if any of the data members are not present when a serialized instance of the data contract is deserialized. What should you do？（）

3 You are creating a Windows Communication Foundation （WCF） service that accepts messages from clients when they are started. The message is defined as follows. [MessageContract] public class Agent { public string CodeName { get； set； }public string SecretHandshake { get； set； } } You have the following requirements： "The CodeName property must be sent in clear text. The service must be able to verify that the property value was not changed after being sent by the client. "The SecretHandshake property must not be sent in clear text and must be readable by the service. What should you do？（）

4 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？（）

5 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？（）

MCPDMCPD(70-513)單項選擇題每日一練(2019.01.26)