Microsoft TS: Windows Communication Foundation velopment with Microsoft .NET Framework 4 : 070-513

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Microsoft 070-513 Exam Syllabus Topics:

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

Question 1

You are modifying an existing Windows Communication Foundation (WCF) service that is defined as follows.

SubmitOrder makes a call to another service. The ProcessMessage method does not perform as expected under a heavy load.
You need to enable processing of multiple messages. New messages must only be processed when the ProcessMessage method is not processing requests, or when it is waiting for calls to SubmitOrder to return.
Which attribute should you apply to the MessageProcessor class?

A. CallbackBehavior ( ConcurrencyMode = ConcurrencyMode.Reentrant )
B. CallbackBehavior ( ConcurrencyMode = ConcurrencyMode.Multiple )
C. ServiceBehavior ( ConcurrencyMode = ConcurrencyMode.Multiple )
D. ServiceBehavior ( ConcurrencyMode = ConcurrencyMode.Reentrant )

Question 2

You are developing a Windows Communication Foundation (WCF) service. One of the service operations contains the following code.

You need to set a service behavior that prevents two or more threads from incrementing the counter variable at the same time.
Which code segment should you use to set the service behavior?

A. Option D
B. Option A
C. Option C
D. Option B

Question 3

Your company has an existing Windows Communication Foundation (WCF) service. The following code segment is part of the service. (Line numbers are included for reference only.)

You need to ensure that AJAX client applications can access the service. Which code segment should you insert at line 02?

A. Option D
B. Option A
C. Option C
D. Option B

Question 4

You implement a Windows Communication Foundation (WCF) service.
You must process all of the valid SOAP messages that the service receives.
What should you do?

A. On the OperationContractAttribute, call the Match method.
B. On the OperationContractAttribute of a method, set the value of the Action and ReplyAction properties to *.
C. Call the Message.CreateMessage static method. Pass the value MessageVersion.Default as a parameter.
D. On the OperationContractAttribute of a method, set the value of the Action and ReplyAction properties to ?.

Question 5

A Windows Communication Foundation (WCF) solution uses the following contract to share a message across its clients. (Line numbers are included for reference only.)
01 <ServiceContract()> 02 Public Interface ITeamMessageService 03 04 <OperationContract()> 05 Function GetMessage() As String 06 07 <OperationContract()> 08 Sub PutMessage(ByVal message As String) 09 End Interface The code for the service class is as follows.
10 Public Class TeamMessageService 11 Implements ITeamMessageService 12 13 Dim key As Guid = Guid.NewGuid() 14 Dim message As String = "Today s Message" 15 16 Public Function GetMessage() As String _ 17 Implements ITeamMessageService.GetMessage 18 19 Return String.Format("Message:{0}. Key:{1}", message, key) 20 End Function 21 22 Public Sub PutMessage(ByVal message As String) _ 23 Implements ITeamMessageService.PutMessage 24 25 Me.message = message 26 End Sub 27 28 End Class
The service is self-hosted. The hosting code is as follows.
29 Dim host As ServiceHost = New ServiceHost(GetType(TeamMessageService)) 30 Dim binding As BasicHttpBinding = New BasicHttpBinding(BasicHttpSecurityMode.None)
31 host.AddServiceEndpoint(
"MyApplication.ITeamMessageService", binding,
"http://localhost:12345")
32 host.Open()
You need to ensure that all clients calling GetMessage will retrieve the updated string if the message is updated by any client calling PutMessage.
What should you do?

A. Add the following attribute to the TeamMessageService class, before line 10002E
<ServiceBehavior(InstanceContextMode:=
InstanceContextMode.PerSession)>
B. Pass a service instance to the instancing code in line 29, as follows.
Dim host As ServiceHost = New ServiceHost(New TeamMessageService())
C. Add the following attribute to the TeamMessageService class, before line 10.
<ServiceBehavior(InstanceContextMode:=InstanceContextMode.Single)>
D. Then change the implementation of PutMessage in lines 22-26 to the following.
Public Sub PutMessage(ByVal message As String) _
Implements ITeamMessageService.PutMessage
TeamMessageService.message = message
End Sub
E. Redefine the message string in line 14, as follows.
Shared message As String = "Today s Message"

Solutions: