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

1. You are creating a Windows Communication Foundation (WCF) service that implements the following service contract.
[ServiceContract]
public interface IOrderProcessing
{
[OperationContract]
void ApproveOrder(int id);
}
You need to ensure that only users with the Manager role can call the ApproveOrder method.
What should you do?

A) In the method body, check the Rights.PossessProperty property to see if it contains Manager.
B) Add a PrincipalPermission attribute to the method and set the Roles property to Manager.
C) In the method body, create a new instance of WindowsClaimSet. Use the FindClaims method to locate a claimType named Role with a right named Manager.
D) Add a SecurityPermission attribute to the method and set the SecurityAction to Demand.

2. A Windows Communication Foundation (WCF) service only accepts messages that are signed and encrypted.
A client application is not receiving expected responses from the service.
You need to enable logging to verify that the messages from the client are signed and encrypted. You also need to see what each message looks like before the message body is deserialized into a .NET object.
What should you do?

A) Configure the System.ServiceModel.MessageLogging trace source in the
system.diagnostics configuration section. In the system.serviceModel configuration, add
the following XML segment.
<diagnostics>
<messageLogging
logMessagesAtServiceLevel="true"
logMessagesAtTransportLevel="true" />
</diagnostics>
B) Configure the System.ServiceModel trace source in the system.diagnostics
configuration section. In the system.serviceModel configuration, add the following XML
segment.
<diagnostics>
<messageLogging logEntireMessage="true" logMessagesAtServiceLevel="true" /> </diagnostics>
C) Configure the System.ServiceModel.MessageLogging trace source in the
system.diagnostics configuration section. In the system.serviceModel configuration, add
the following XML segment.
<diagnostics>
<messageLogging
logEntireMessage="true"
logMessagesAtServiceLevel="true"
logMessagesAtTransportLevel="true" />
</diagnostics>
D) Configure the System.ServiceModel trace source in the system.diagnostics
configuration section. In the system.serviceModel configuration, add the following XML
segment.
<diagnostics>
<messageLogging
logEntireMessage="true"
logMessagesAtServiceLevel="true"
logMessagesAtTransportLevel="true" />
</diagnostics>

3. 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 OperationContract attribute of the Initialize operation to the following. OperationContract(initiating = true, IsTerminating = false)
B) Change the ServiceContract attribute of the IMyService interface to the following ServiceContract(SessionMode SessionMode Allowed)
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)

4. You develop a Window Communication Foundation (WCF) service. You have the following requirements: - Create a data contract to pass data between client applications and the service. - Create the data that is restricted and cannot pass between client applications and
the service. You need to implement the restricted data members. Which member access modifier should you use?

A) Public
B) Protected
C) Private
D) Static

5. You have a secured Windows Communication Foundation (WCF) service.
You need to track unsuccessful attempts to access the service.
What should you do?

A) Set the Mode attribute of the security configuration element to Message
B) Set the authorizationManagerType attribute of the serviceAuthorization behavior to Message
C) Set the includeExceptionDetailslnFaults attribute of the serviceDebug behavior to true
D) Set the messageAuthenticationAuditLevel attribute of the serviceSecurityAudit behavior to Failure.

Solutions: