You are developing an application to update a users social status. You need to consume the service using Windows Communication Foundation (WCF).
The client configuration is as follows.
<system.serviceModel>
<bindings>
<webHttpBinding>
<binding name="SocialConfig">
<security mode="TransportCredentialOnly">
<transport clientCredentialType="Basic"
realm="Social API" />
</security>
</binding>
</webHttpBinding>
</bindings>
<client>
<endpoint address="http://contoso.com"
binding="webHttpBinding"
bindingConfiguration="SocialConfig"
contract="ISocialStatus"
name="SocialClient" />
</client>
</system.serviceModel>
The service contract is defined as follows.
[ServiceContract] public interface ISocialStatus {
[OperationContract]
[WebInvoke(UriTemplate =
"/statuses/update.xml?status={text}")]
void UpdateStatus(string text);
}
Which code segment should you use to update the social status?

• A. using (ChannelFactory<ISocialStatus> factory =
  new WebChannelFactory<ISocialStatus>(typeof(ISocialStatus)))
  {
  factory.Credentials.UserName.UserName = user.Name;
  factory.Credentials.UserName.Password = user.Password;
  ISocialStatus socialChannel = factory.CreateChannel();
  socialChannel.UpdateStatus(newStatus);
  }
• B. using (ChannelFactory<ISocialStatus> factory =
  new ChannelFactory<ISocialStatus>("POST"))
  {
  factory.Credentials.Windows.ClientCredential.UserName =
  user.Name;
  factory.Credentials.Windows.ClientCredential.SecurePassword.
  SetAt(0, Convert.ToChar(user.Password) );
  ISocialStatus socialChannel = factory.CreateChannel();
  socialChannel.UpdateStatus(newStatus); }
• C. using (WebChannelFactory<ISocialStatus> factory =
  new WebChannelFactory<ISocialStatus>(typeof(ISocialClient)))
  {
  factory.Credentials.Windows.ClientCredential.UserName =
  user.Name;
  factory.Credentials.Windows.ClientCredential.SecurePassword.
  SetAt(0, Convert.ToChar(user.Password) );
  ISocialStatus socialChannel = factory.CreateChannel();
  socialChannel.UpdateStatus(newStatus); }
• D. using (WebChannelFactory<ISocialStatus> factory =
  new WebChannelFactory<ISocialStatus>("SocialClient"))
  {
  factory.Credentials.UserName.UserName = user.Name;
  factory.Credentials.UserName.Password = user.Password;
  ISocialStatus socialChannel = factory.CreateChannel();
  socialChannel.UpdateStatus(newStatus);
  }

You are implementing a Windows Communication Foundation (WCF) service contract named IContosoService in a class named ContosoService. The service occasionally fails due to an exception being thrown at the service.
You need to send the stack trace of any unhandled exceptions to clients as a fault message.
What should you do?

• A. For each OperationContract exposed by IContosoService , apply the following attribute. <FaultContract(GetType(Exception))>
• B. Apply the following attribute to the ContosoService class. <ServiceBehavior(IncludeExceptionDetailInFaults:=True)>
• C. In the application configuration file on the service and all the clients, add the following
  XML segment to the system.diagnostics/sources configuration section group.
  <source name="System.ServiceModel" switchValue=" Error " propagateActivity="true">
  <listeners>
  <add name="ServiceModelTraceListener"
  initializeData="app_tracelog.svclog"
  type="System.Diagnostics.XmlWriterTraceListener" />
  </listeners>
  </source>
• D. In the application configuration file on the client, add the following XML segment to the
  system.serviceModel/behaviors configuration section group.
  <endpointBehaviors>
  <behavior name=" debug ">
  < callback Debug includeExceptionDetailInFaults="true" />
  </behavior>
  </endpointBehaviors>
  Associate the debug behavior with any endpoints that need to return exception details.

You are configuring a routing service to call a target service. The routing service has no knowledge of the target service's data tyes other than the service contract.
The operation contract for all of the methods of the target service specifies IsOneWay=true.
You need to specify the endpoint information for the routing service.
What should you do?

• A. In the routing service configuration file, specify "*" for the client endpoint contract and "*" for the service endpoint contract.
• B. In the routing service configuration file, specify "*" for the client endpoint contract and System.ServiceModel.Routing.IRequestReplyRouter for the service endpoint contract.
• C. In the target service configuration file, specify "*" for the client endpoint contract and "*" for the service endpoint contract.
• D. In the routing service configuration file, specify "*" for the client endpoint contract and System.ServiceModel.Routing.ISimplexDatagramRouter for the service endpoint contract.

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 includeExceptionDetaillnFaults attribute of the serviceDebug behavior to true.
• B. Set the serviceAuthorizationManagerType attribute of the serviceAuthorization behavior to Message.
• C. Set the Mode attribute of the security configuration element to Message.
• D. Set the messageAuthenticationAuditLevel attribute of the serviceSecurityAudit behavior to Failure.