A Windows Communication Foundation (WCF) service interacts with the database of a workflow engine. Data access authorization is managed by the database, which raises security exceptions if a user is unauthorized to access it.You need to ensure that the ap

You are developing a Windows Service. The Windows Service will host a Windows Communication Foundation (WCF) service.The Windows Service class will inherit from ServiceBase.You need to ensure that the WCF service starts when the Windows Service is restarted.What should you do in the Windows Service class?（）

A.

B.

C.

D.

You are developing a Windows Communication Foundation (WCF) service. The service configuration file has a element defined. You need to ensure that all security audit information, trace logging, and message logging failures are recorded.Which configuration segment should you add to the element?（）

A.

B.

C.

D.

A. Set the serviceAuthorizationAuditLevel setting to Success and the messageAuthenticationAuditLevel setting to Success.

B. Set the messageAuthenticationAuditLevel setting to Success and the auditLogLocation setting to Application.

C. Set the serviceAuthorizationAuditLevel setting to SuccessAndFailure and the messageAuthenticationAuditLevel setting to SuccessAndFailure.

D. Set the messageAuthenticationAuditLevel setting to SuccessAndFailure and the auditLogLocation setting to Security.

A. Set the authorization Manager Type attribute of the service Authorization behavior to Message.

B. Set the include Exception Detailsln Faults attribute of the service Debug behavior to true.

C. Set the Mode attribute of the security configuration element to Message.

D. Set the message Authentication AuditLevel attribute of the service Security Audit behavior to Failure.

A. NetTcpContextBinding

B. BasicHttpContextBinding

C. NetTcpBinding

D. NetMsmqBinding

You are creating an application that consumes a Windows Communication Foundation (WCF) service. The service implements the IService contract. The client application contains the CallbackHandler class, which implements IServiceCallback.You need to ensure that a client proxy is created that can communicate with the service over a duplex channel.Which code segment should you use?（）

A.

B.

C.

D.

You are developing a Windows Communication Foundation (WCF) service. The service operation takes a customer number as the only argument and returns information about the customer. The service requires a security token in the header of the message. You need to create a message contract for the service.Which code segment should you use?（）

A.

B.

C.

D.

You develop a Windows Communication Foundation (WCF) service. You name the service MovieService in the Movie namespace. The service is hosted in Microsoft Internet Information Services (IIS). You copy the assembly containing the service to the bin folder in the virtual directory path.You need to set up the URI that is mapped to the service.What should you do?（）

A.

B.

C.

D.

A.

B.

C.

D.

You are developing a data contract for a Windows Communication Foundation (WCF) service. The data in the data contract must participate in round trips. Strict schema validity is not required. You need to ensure that the contract is forward-compatible and allows new data members to be added to it. Which interface should you implement in the data contract class?（）

A.ICommunicationObject

B.IExtension

C.IExtensibleObject

D.IExtensibleDataObject