You are implementing a Windows Communication Foundation (WCF) service contract named IContosoService in a class named ContosoService. The service occasionally fails due to an exception being thrown at the service.
You need to send the stack trace of any unhandled exceptions to clients as a fault message.
What should you do?

• A. In the application configuration file on the service and all the clients, add the following
  XML segment to the system.diagnostics/sources configuration section group.
  <source name="System.ServiceModel" switchValue="Error" propagateActivity="true">
  <listeners>
  <add name="ServiceModelTraceListener"
  initializeData="app_tracelog.svclog"
  type="System.Diagnostics.XmlWriterTraceListener" />
  </listeners>
  </source>
• B. In the application configuration file on the client, add the following XML segment to the
  system.serviceModel/behaviors configuration section group.
  <endpointBehaviors>
  <behavior name=" debug ">
  < callback Debug includeExceptionDetailInFaults="true" />
  </behavior>
  </endpointBehaviors>
  Associate the debug behavior with any endpoints that need to return exception details.
• C. For each OperationContract exposed by IContosoService, apply the following attribute.
  [FaultContract(typeof(Exception))]
• D. Apply the following attribute to the ContosoService class.
  [ServiceBehavior(IncludeExceptionDetailInFaults = true)]

You are debugging a Windows Communication Foundation (WCF) service. The service uses signed and encrypted messages.
You need to configure logging so that you can read the contents of the messages.
What should you do?

• A. Set logMessageAtTransportLevel to true.
• B. Set maxSizeMessagesToLog to 10
• C. Set logMessageAtServiceLevel to true.
• D. Set maxMessagesToLog to 10.

A Windows Communication Foundation (WCF) solution uses the following contract.
[ServiceContract(SessionMode SessionModeAllowed)] public interface IMyService {
[OperaionContractQsTerminating false) void lnitialize0;
[OperaionContractQslnitiating false)] Void DoSomethingO;
[OperaionContractQsTerminating true)J void TerminateO;
}
You need to change this interface so that:
'Initialize is allowed to be called any time before Terminate is called
"DoSomething is allowed to be called only after Initialize is called, and n allowed to be
called after Terminate is called "Terminate will be lowed to be called only after Initialize is called Which two actions should you perform (Each correct answer presents part of the solution.
Choose two)

• A. Change the ServiceContract attribute of the IMyService interface to the following ServiceContract(SessionMode SessionMode Allowed)
• B. Change the OperationContract attribute of the Terminate operation to the following OperationContract(klnitiating = fase, IsTerminating = true)
• C. Change the ServiceContract attribute of the IMyService interface to the following. ServiceContract(SessionMode = SessionMode Required)
• D. Change the OperationContract attribute of the Initialize operation to the following. OperationContract(initiating = true, IsTerminating = false)

You are developing a Windows Communication Foundation (WCF) service that contains the following service contract.
<ServiceContract() > Public Interface IPaymentService <OperationContract() > Sub RecordPayments(ByVal person As Person) End Interface Public Class Person End Class Public Class Employee Inherits Person End Class Public Class Customer Inherits Person End Class
You need to ensure that RecordPayments can correctly deserialize into an Employee or a Customer object.
What should you do?

• A. Add the following KnownType attribute to the Employee class and to the Customer class. <KnownType(GetType(Person))>
• B. Implement the IExtensibleDataObject interface in the Person class.
• C. Add the following KnownType attributes to the Person class. <KnownType(GetType(Employee))> <KnownType(GetType(Customer))>
• D. Implement the IExtension(Of T) interface in the Person class.

DRAG DROP
You use Visual Studio to develop a Windows Communication Foundation (WCF) service. The service is not hosted.
You cannot use the WcfTestClient.exe tool to test the service.
You need to test the service from a separate Visual Studio solution that contains a simple console application.
Which four actions should you perform in sequence? (To answer, move the appropriate four actions from the list of actions to the answer area and arrange them in the correct order.)