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

You are developing a Windows Communication Foundation (WCF) service.
The service operation takes a customer number as the only argument and returns information about the customer. The service requires a security token in the header of the message.
You need to create a message contract for the service.
Which code segment should you use?

• A. <ServiceContract()>
  Public Interface IService
  <OperationContract()>
  Function GetCustomerInformation(
  ByVal header As Header,
  ByVal customerNumber As Integer)
  As CustomerInformation
  End Interface
  <DataContract()>
  Public Class CustomerInformation
  End Class
  <MessageContract()>
  Public Class Header
  <MessageHeader()>
  Public SecurityTag As String
  End Class
• B. <ServiceContract()>
  Public Interface IService
  <OperationContract()>
  Function GetCustomerInformation(
  ByVal header As Header, ByVal customerNumber As Integer) As CustomerInformation End Interface <MessageContract()> Public Class CustomerInformation End Class <MessageContract()> Public Class Header <MessageHeader()> Public SecurityTag As String End Class
• C. <ServiceContract()> Public Interface IService <OperationContract()> Function GetCustomerInformation( ByVal request As CustomerNumber) As CustomerInformation End Interface <DataContract()> Public Class CustomerInformation End Class <MessageContract()> Public Class CustomerNumber <MessageHeader()> Public SecurityTag As String <MessageBodyMember()> Public CustomerNumberElement As Integer End Class
• D. <ServiceContract()> Public Interface IService <OperationContract()> Function GetCustomerInformation( ByVal request As CustomerNumber) As CustomerInformation End Interface <MessageContract()> Public Class CustomerInformation End Class <MessageContract()> Public Class CustomerNumber <MessageHeader()> Public SecurityTag As String <MessageBodyMember()> Public CustomerNumberElement As Integer End Class

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. workflowUnhandledException
• D. serviceDebug

You are creating an ASP NET web application that hosts several Windows Communication Foundation (WCF) services the services have ASP.NET Compatibility Mode enabled.
Users authenticate with the Web application by using a cookie-based ASR NET Forms Authentication model. You add a service tile named Authentication. svc that contains the following code segment
<%@ SenviceHost Servicee"System
Web Application Services Authentication Service"Factory="System.Web.ApplicationServices.AppicationServicesHostFactory' %>.
You need to ensure that users can access the WCF services without having to re-authenticate.
Which two configuration settings should you add? (Each is part of a complete solution. Choose two.)

• A. In the system web.extensions/scripting/webServices/authenticationService element, set the enabled attribute to true.
• B. Add a custom service behavior named AuthenticationServiceTypeBehaviors with a serviceAuthenticationManager element that has serviceAuthenticationManagerType set to System Web Security. SQL Membership Provider
• C. Add a service endpoint with basicHttpBinding for the contract System.WebApplicationServices.AuthenticationService.
• D. In the system web.extensions/scripting/webServices/profileService element, set the enabled attribute to true.

An existing Windows Communication Foundation (WCF) service uses basicHttpBinding. You are releasing updates to the service and the client application.
You need to enable the client application to flow transactions to the service.
What are two possible ways to achieve this goal? (Each correct answer presents a complete solution. Choose two.)

• A. Change the binding to use basicHttpContextBinding.
• B. Change to a custom binding that has the transactionFlow, textMessageEncoding, and httpTransport binding elements in this order.
• C. Change to a custom binding that has the httpTransport, textMessageEndcoding, and transactionFlow binding elements in this order.
• D. Change the binding to use wsHttpBinding.

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