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

1. You develop an ASP.NET web application that is hosted in the virtual directory named SecureApp. The web application uses the ASP.NET membership provider.
The application pool for the website uses the dedicated domain account named MyDomain\WebServiceAccount. The web.config file contains the connectionStrings element.
You need to secure the connectionStrings element for the web application.
Which of the following two commands must you run at a command prompt? (Each correct answer presents part of the solution. Choose two.)

A) aspnet_regiis -pe "connectionStrings" -app "MyDomain\WebServiceAccount"
B) aspnet_regiis -pa "NetFrameworkConfigurationKey" "MyDomain\WebServiceAccount"
C) aspnet_regsql -pa "NetFrameworkConfigurationKey" "MyDomain\WebServiceAccount"
D) aspnet_regiis -pe "connectionStrings" -app "/SecureApp"

2. Self-hosted Windows Communication Foundation (WCF) service uses a secure HTTP binding with a custom principal permission mode.
The binding requires users to provide their Windows logon credentials.
You need to retrieve the identity of the caller.
What are two possible properties you can use to achieve this goal? (Each correct answer presents a complete solution Choose two)

A) Thread.CurrentPrincipal.identityName
B) HttpContext.Current.User.Identity.Name
C) OperationContext.Current.ServiceSecurityContext.PrimaryidentityName
D) ServiceSecurityContext.Current.Primary.identity.Name

3. You are debugging a Windows Communication Foundation (WCF) service. The service uses signed and encrypted messages.
You need to configure logging so that you can read the contents of the messages.
What should you do?

A) Set maxMessagesToLog to 10.
B) Set maxSizeMessagesToLog to 10
C) Set logMessageAtTransportLevel to true.
D) Set logMessageAtServiceLevel to true.

4. A Windows Communication Foundation (WCF) service interacts with the database of a workflow engine. Data access authorization is managed by the database, which raises security exceptions if a user is unauthorized to access it.
You need to ensure that the application transmits the exceptions raised by the database to the client that is calling the service.
Which behavior should you configure and apply to the service?

A) routing
B) serviceSecurityAudit
C) serviceDebug
D) workflowUnhandledException

5. A Windows Communication Foundation (WCF) solution uses the following contracts. (Line numbers are included for reference only.)

When the client calls GetMessage on the service interface, the service calls GetName on the client callback.
In the client, the class NameService implements the callback contract.
The client channel is created as follows.

You need to ensure that the service callback is processed by the instance of NameService.
What are two possible ways to achieve this goal? (Each correct answer presents a complete solution. Choose two.)

A) Add the following code segment after line 26.
callbackContext.IncomingChannels.Add(
DirectCast(greetingService, IDuplexChannel))
B) Change line 26 to the following code segment.
Dim greetingService As IGreetingService =
factory.CreateChannel(callbackContext)
C) Add the following code segment after line 26.
callbackContext.OutgoingChannels.Add(
DirectCast(greetingService, IDuplexChannel))
D) Change line 25 to the following code segment.
Dim factory As DuplexChannelFactory(Of IGreetingService) =
New DuplexChannelFactory(Of IGreetingService)(
callbackContext, binding, address)

Solutions: