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Microsoft 70-513 Exam Syllabus Topics:

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

1. You are developing a Windows Communication Foundation (WCF) client application. The client application contains the following code.

The configuration file contains the following lines.

You need to ensure that the service is consumed.
Which code segment should you use?

A) var client = new SocialClient("SocialClient"); c1lent.Endpoint.Behaviors.Add( new WebHttpBehovior());
B) var client = new Social Client ("POST"); client.Endpoint.Behaviors.Add( new WebScriptEnoblingBehovior());
C) var client = new SocialClient("SocialClient"); client.Endpoint.Behaviors.Add( new WebScriptEnoblingBehovior());
D) var client = new Social Client ("POST") ; client.Endpoint.Behaviors.Add( new WebHttpBehovior());

2. You are developing a Windows Communication Foundation (WCF) service. The following code defines and implements the service. (Line numbers are included for reference only.)

You need to ensure that two identical copies of the received message are created in the service.
Which code segment should you insert at line 12?

A) Message msgCopy = message;
Message returnMsg = message;
B) MessageBuffer buffer = message.
CreateBufferedCopy(8192);
Message msgCopy = buffer.CreateMessage();
Message returnMsg = buffer.CreateMessage();
C) Message msgCopy = message.
CreateBufferedCopy(8192) as Message;
Message returnMsg = message.
CreateBufferedCopy(8192) as Message;
D) MessageBuffer buffer = message.
CreateBufferedCopy(8192);
Message msgCopy = buffer.CreateMessage();
Message returnMsg = msgCopy;

3. 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) Override the OnStart method and create and open a new ServiceHost.
Override the OnStop method and close the ServiceHost.
B) Override the OnContinue method and open a new ServiceHost.
Override the OnStop method and close the ServiceHost.
C) Create a public method named Main.
Create a new ServiceHost in the Main method.
Override the OnShutdown method and close the ServiceHost.
D) Override the OnPowerEvent method and open a new ServiceHost.
Override the OnShutdown method and close the ServiceHost.

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

5. A WCF service code is implemented as follows. (Line numbers are included for reference only.)
01 <ServiceContract()> 02 <ServiceBehavior( 03 InstanceContextMode:=InstanceContextMode.Single)> 04 Public Class CalculatorService 05 06 <OperationContract()> 07 Public Function Calculate(ByVal op1 As Double, 08 ByVal op As String, ByVal op2 As Double) As Double & 24 End Function 25 26 End Class
You need to decrease the response time of the service.
What are two possible ways to achieve this goal (Each correct answer presents a complete solution? Choose two.)

A) Require the clients to use async operations when calling the service.
B) Change the service behavior to the following. <ServiceBehavior(InstanceContextMode:=InstanceContextMode.PerCall)>
C) Change the service behavior to the following. <ServiceBehavior( InstanceContextMode:=InstanceContextMode.Single, ConcurrencyMode:=ConcurrencyMode.Multiple)>
D) Require the clients use threads, the Parallel Task Library, or other mechanism to issue service calls in parallel.

Solutions: