You develop a Windows Communication Foundation (WCF) service that employees use to access bonus information. You define the following service contract. (Line numbers are included for reference only.)
01 [ServiceContract(SessionMode = SessionMode.Required)]
02 public interface IFinancialService
03 {
04 [OperationContract]
05 string Login(int employeeID, string passwordHash);
06
07 [OperationContract]
08 double GetBonus(int month);
09
10 [OperationContract(IsTerminating = true)]
11 void Logout();
12 }
Client applications can invoke methods without logging in.
You need to ensure that the client applications invoke Login before invoking any other method.
You also need to ensure that client applications cannot consume the service after invoking Logout.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

• A. Replace line 04 with the following code. [OperationContract(IsInitiating = true, IsTerminating = true)]
• B. Replace line 10 with the following code. [OperationContract(IsInitiating = false, IsTerminating = true)]
• C. Replace line 07 with the following code. [OperationContract(IsInitiating = false)]
• D. Replace line 04 with the following code. [OperationContract(IsInitiating = false)]

You implement a Windows Communication Foundation (WCF) service.
You must process all of the valid SOAP messages that the service receives.
What should you do?

• A. On the OperationContractAttribute of a method, set the value of the Action and ReplyAction properties to *.
• B. Call the Message.CreateMessage static method. Pass the value MessageVersion.Default as a parameter.
• C. On the OperationContractAttribute, call the Match method.
• D. On the OperationContractAttribute of a method, set the value of the Action and ReplyAction properties to ?.

You want to debug the Windows Communication Foundation (WCF) client and server interaction through message and application tracing.
You need to correlate traces generated on the client and the server.
Which XML segment should you add to the system. diagnostics configuration element in the client and server application configuration file?

• A. <sources> <source propagate Activitye'true" namee"System Service Model"
  switchValues'Warning, ActivityTracing'> <listeners
  <add namez"ServiceModelTraceListener" /> </listeners>
  </source> </sources>
• B. <sources>
  <source names"System. ServiceModel" switchValues'VerboseActivityTracing"> <listeners>
  <add namee"ServiceModelTraceListener" /> </listeners> </source>
  </sources>
• C. <sources>
  <source names"System. ServiceModeiMessageLogging" propagateActivitye'true" switch Values' Warning, ActivityTracing'5 <listeners> <add name="ServiceModelTraceListener" I> </listeners> </source> </sources>
• D. <sources> <source names" System ServiceModel. MessageLogging"
  switchValuee"Verbose"> <listeners>
  <add namez"ServiceModelTraceListener" /> <Listeners>
  </source> </sources>

A Windows Communication Foundation (WCF) solution uses two services to manage a shopping cart. Service
A processes messages containing line items that total between $0 and $500. Service B processes messages containing line items that total more than $500.
All messages are of equal importance to the business logic.
You need to route incoming messages to the appropriate services by using WCF routing.
Which two message filters should you add to the router? (Each correct answer presents part of the solution. Choose two.)

• A. a message filter with a priority of 0 that will forward messages that total between $0 and $500 to Service A
• B. a message filter with a priority of 0 that will forward all messages to Service B
• C. a message filter with a priority of 100 that will forward messages that total between $0 and $500 to Service A
• D. a message filter with a priority of 100 that will forward all messages to Service B

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 Service Host when receiving a message Compare the security configurations on the client and server to make sure that they are compatible
• B. 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
• C. 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
• D. This issue occurred at the ServiceHost when accepting an initial set of messages from MSMQ.Log all messages sent between the clients and sever.