You create a Windows Communication Foundation (WCF) sen/ice. 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\aspnet namespace.
  Remove Enable account permission for the Local System account.
  Add a custom user and grant that user Enable account permission.
• 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\Security namespace.
  Remove Enable account permission for the Local System account.

You are using tracing to diagnose run-time issues when you look at the traces for the service in Svc Trace viewer exe, you see what is shown in the exhibit (Click the Exhibit button)

The exception trace is selected in Svc Trace reviewer exe.
You need to interpret the trace results to determine where the error occurred and what to do next.
What should you do?

• A. This issue occurred at the ServiceHost when accepting an initial set of messages from MSMQ.Log all messages sent between the clients and sever.
• B. This issue occurred at the Service Host when receiving a message Compare the security configurations on the client and server to make sure that they are compatible
• C. This issue occurred in the ServiceHost during ServiceHost Open. Enable WMI by adding the following configuration to the system.serviceModel configuration section in the application configuration file <diagnostics wmiProviderEnabledetrue'!> Restart the application and inspect the endpoints visible through WMI
• D. This issue occurred in the Service Host during Service Host. Open. Compare the security settings for any endpoints that use an MSMQ transport to the security configuration of the MSMQ queue used by the endpoint

You develop a Windows Communication Foundation (WCF) service that contains the following code segment. (Line numbers are included for reference only.)

You need to ensure that all service endpoints are available to client applications. Which code segment should you insert at line 04?

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

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]
  CustomerInformation GetCustomerInformation( CustomerNumber request);
  }
  [DataContract]
  public class CustomerInformation { } [MessageContract] public class CustomerNumber {
  [MessageHeader]
  public string SecurityTag; [MessageBodyMember] public int CustomerNumberElement; }
• B. [ServiceContract]
  public interface IService
  { [OperationContract]
  CustomerInformation GetCustomerInformation(Header header,
  int customerNumber);
  } [MessageContract] public class CustomerInformation { } [MessageContract] public class
  Header { [MessageHeader] public string SecurityTag; }
• C. [ServiceContract]
  public interface IService
  {
  [OperationContract]
  CustomerInformation GetCustomerInformation(
  CustomerNumber request);
  }
  [MessageContract]
  public class CustomerInformation
  {
  ......
  }
  [MessageContract] public class CustomerNumber
  {
  [MessageHeader]
  public string SecurityTag;
  [MessageBodyMember]
  public int CustomerNumberElement;
  }
• D. [ServiceContract]
  public interface IService
  {
  [OperationContract]
  CustomerInformation GetCustomerInformation(Header header,
  int customerNumber);
  }
  [DataContract]
  public class CustomerInformation
  {
  .......
  }
  [MessageContract]
  public class Header { [MessageHeader] public string SecurityTag;
  }