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

1. You develop a Windows Communication Foundation (WCF) service. You enable all performance counters and run multiple calls to the service.
The service must isolate session data for each user.
You need to monitor the instancing behavior used in the service.
Which performance counter should you monitor?

A) ServiceModelService 4.0.0.0\Calls
B) ServiceModelService 4.0.0.0\Instances
C) ASP.NET State Service\State Server Sessions Active
D) ASP.NET State Service\State Server Sessions Total

2. You are creating a Windows Communication Foundation (WCF) service. You do not want to expose the internal implementation at the service layer.
You need to expose the following class as a service named Arithmetic with an operation named Sum.
Public Class Calculator Public Function Add (ByVal x As Integer, ByVal y As Integer) As Integer End Function End Class Which code segment should you use?

A) <ServiceContract(Name:="Arithmetic")> Public Class Calculator <OperationContract(ReplyAction:="Sum")> Public Function Add(ByVal x As Integer, ByVal y As Integer) As Integer End Function End Class
B) <ServiceContract(Namespace:="Arithmetic")> Public Class Calculator <OperationContract(Action:="Sum")> Public Function Add(ByVal x As Integer, ByVal y As Integer) As Integer End Function End Class
C) <ServiceContract(ConfigurationName:="Arithmetic")> Public Class Calculator <OperationContract(Action:="Sum")> Public Function Add(ByVal x As Integer, ByVal y As Integer) As Integer End Function End Class
D) <ServiceContract(Name:="Arithmetic")> Public Class Calculator <OperationContract(Name:="Sum")> Public Function Add(ByVal x As Integer, ByVal y As Integer) As Integer End Function End Class

3. A Windows Communication Foundation (WCF) service that handles corporate accounting must be changed to comply with government regulations of auditing and accountability.
You need to configure the WCF service to execute under the Windows logged-on identity of the calling application.
What should you do?

A) Within the service configuration, add a serviceAuthorization behavior to the service, and set impersonateCallerForAllOperations to true.
B) Within the service configuration, add a serviceSecurityAudit behavior to the service, and set serviceAuthorizationAuditLevel to SuccessOrFailure.
C) Within the service configuration, add a serviceAuthenticationManager behavior to the service, and set serviceAuthenticationManagerType to Impersonate.
D) Within the service configuration, add a serviceCredentials behavior to the service, and set type to Impersonate.

4. You create a Windows Communication Foundation (WCF) service.
It is deployed on Microsoft Internet Information Services (IIS) with an application pool running as Network Service.
You enable WMI tracing before launching the service.
Your IT support staff adds WMI data collection through ASP.NET WMI tracing. You need to restrict the collection of WMI data to a privileged account.
What should you do in WMI Control in the Computer Management console?

A) Select the Root\ServiceModel namespace.
Remove Enable account permission for the Network Service account.
Add a custom user and grant that user Enable account permission.
B) Select the Root\Security namespace.
Remove Enable account permission for the Local System account.
C) Select the Root\aspnet namespace.
Remove Enable account permission for the Network Service account.
Add a custom user and grant that user Enable account permission.
D) Select the Root\aspnet namespace.
Remove Enable account permission for the Local System account.
Add a custom user and grant that user Enable account permission.

5. Four Windows Communication Foundation (WCF) services are hosted in Microsoft Internet Information Services (IIS). No behavior configuration exists in the web.config file.
You need to configure the application so that every service and endpoint limits the number of concurrent calls to 50 and the number of concurrent sessions to 25.
Which XML segment should you add to the system.serviceModel configuration section of the web.config file?

A) <behaviors>
<serviceBehaviors>
<behavior name="">
<serviceThrottling maxConcurrentCalls="50" maxConcurrentSessions="25"/>
</behavior> </serviceBehaviors> </behaviors>
B) <behaviors>
<serviceBehaviors>
<behavior name="*">
<serviceThrottling maxConcurrentCalls="50" maxConcurrentSessions="25"/>
</behavior>
</serviceBehaviors>
</behaviors>
C) <behaviors>
<serviceBehaviors>
<behavior name="default">
<serviceThrottling maxConcurrentCalls="50" maxConcurrentSessions="25"/>
</behavior>
</serviceBehaviors>
</behaviors>
D) <behaviors>
<serviceBehaviors>
<behavior name="ALL">
<serviceThrottling maxConcurrentCalls="50" maxConcurrentSessions="25"/>
</behavior>
</serviceBehaviors>
</behaviors>

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