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Microsoft TS: Windows Communication Foundation velopment with Microsoft .NET Framework 4 Sample Questions:

1. You are moving a Windows Communication Foundation (WCF) service into production. You need to be able to monitor the health of the service.
You only want to enable all performance counter instances exposed by the ServiceModelService 4.0.0.0 counter group.
Which element should you add to the system.serviceModel section in the application configuration file?

A) <diagnostics wmiProviderEnabled="true" performanceCounters="Off" />
B) <diagnostics performanceCounters="All" />
C) <diagnostics performanceCounters="ServiceOnly" />
D) <diagnostics wmiProviderEnabled="true" />

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

3. Your company has an existing Windows Communication Foundation (WCF) service that allows business partners to place orders. The service uses netMsmqBinding.
You find that processing every order in its own transaction is causing a delay.
You need to ensure that the service is configured to process multiple orders in one transaction.
What should you do?

A) Use <dispatcherSynchronizationBehavior> endpoint behavior and set the maxPendingReceives attribute.
B) Use <serviceThrottling> service behavior and set the maxConcurrentCalls attribute.
C) Use <transactedbatching> endpoint behavior and set the maxBatchSize attribute.
D) Use <synchronousReceive> endpoint behavior.

4. You are developing a client application that consumes a Windows Communication Foundation (WCF) service.
You use the svcutil.exe utility to create a proxy for the service.
You use the svcutil.exe switches that generate asynchronous calls. GetFlight is a service operation that takes no parameters and returns a string. The GetFlightCallback method must be called when the service operation returns.
You create an instance of the client proxy with the following code.
var client = new TravelServiceClient();
You need to ensure that a callback is received when the GetFlight operation is called asynchronously.
Which code segment should you use?

A) client.GetFlightCompleted += new EventHandler<GetFlightCompletedEventArgs>( GetFlightCallback); client.GetFlightAsync();
B) client.GetFlight(); client.BeginGetFlight(GetFlightCallback, null);
C) client.BeginGetFlight(GetFlightCallback, null); client.GetFlight();
D) IAsyncResult asyncResult = client.BeginGetFlight( GetFlightCallback, client); client.EndGetFlight(asyncResult);

5. You are hosting a Windows Communication Foundation (WCF) service under Microsoft Internet Information Services (IIS) 7.0.
You have set up a Web site in IIS Manager. The physical path is C:\wwwroot\Calendar. There is a Calendar.svc file in the C:\wwwroot\Calendar folder. It contains the following directive.
<%@ ServiceHost Language="VB" Debug="true" Service="Calendar.Calendar" CodeBehind="Calendar.svc.vb" %>
The Calendar.svc.vb file contains the source for the Calendar class in the Calendar namespace. You compile this code into the Calendar.dll file.
You need to deploy your service to the Web site.
What should you do?

A) Copy the Calendar.dll file to the C:\wwwroot\Calendar\bin folder.
B) Copy the Calendar.svc.vb file to the C:\wwwroot\Calendar\code folder.
C) Copy the Calendar.dll file to the C:\wwwroot\Calendar\code folder.
D) Copy the Calendar.svc.vb file to the C:\wwwroot\Calendar\bin folder.

Solutions: