Your company has an existing Windows Communication Foundation (WCF) service that allows business partners to place orders. The service uses netMsmqBinding.
You find that processing every order in its own transaction is causing a delay.
You need to ensure that the service is configured to process multiple orders in one
transaction.
What should you do?

• A. Use <dispatcherSynchronizationBehavior> endpoint behavior and set the maxPendingReceives attribute.
• B. Use <synchronousReceive> endpoint behavior.
• C. Use <transactedBatching> endpoint behavior and set the maxBatchSize attribute.
• D. Use <serviceThrottling> service behavior and set the maxConcurrentCalls attribute.

A Windows Communication Foundation (WCF) service implements the following contract. (Line numbers are included for reference only.)
01 [ServiceContract]
02 public interface IDataAccessService
03 {
01 [OperationContract]
05 void PutMessage(string message);
07 [OperationContract]
08 [FaultContract(typeof(TimeoutFaultException)) ]
09 [FaultContract(typeof(FaultException) ) ]
10 stringf] SearchMessages(string search);
11 }
The implementation of the SearchMessages method throws TimeoutFaultException exceptions for database timeouts. The implementation of the SearchMessages method also throws an Exception for any other issue it encounters while processing the request. These exceptions are received on the client side as generic FaultException exceptions.
You need to implement the error handling code for SearchMessages and create a new channel on the client only if the channel faults.
What should you do?

• A. Catch and handle FaultException.Catch TimeoutFaultException and create a new channel.
• B. Catch both TimeoutFaultException and FaultException. Create a new channel in both cases.
• C. Catch and handle TimeoutFaultException.Catch FaultException and create a new channel.
• D. Catch and handle both TimeoutFaultException and FaultException

You are creating a Windows Communication Foundation (WCF) service that uses claims-based authorization. The following code retrieves the correct claim set.
var claims = ServiceSecurityContext.Current.
AuthorizationContext.ClaimSets[0];
You need to validate that the requesting client application has included a valid DNS value in the claim.
Which code segment should you use to retrieve the claim for validation?

• A. claims.FindClaims(ClaimTypes.Dns, Rights.Identity) .FirstOrDefault();
• B. claims.FindClaims(ClaimTypes.Dns, Rights.PossessProperty) .FirstOrDefault();
• C. claims.Equals(ClaimTypes.Dns);
• D. claims.ContainsClairo(Claim.CreateDnsClaim(ClaimTypes.Dns));

You are creating a Window s Communication Foundation (WCF) service application. The
application needs to service many clients and requests simultaneously. The application also needs to ensure subsequent individual client requests provide a stateful conversation.
You need to configure the service to support these requirements.
Which attribute should you add to the class that is implementing the service?

• A. <ServiceBehavior(InstanceContextMode:=InstanceContextMode.PerSession, ConcurrencyMode:=ConcurrencyMode.Multiple)>
• B. <ServiceBehavior(InstanceContextMode:=InstanceContextMode.PerCall, ConcurrencyMode:=ConcurrencyMode.Multiple)>
• C. <ServiceBehavior(InstanceContextMode:=InstanceContextMode.PerSession, ConcurrencyMode:=ConcurrencyMode.Single)>
• D. <ServiceBehavior(InstanceContextMode:=InstanceContextMode.PerCall, ConcurrencyMode:=ConcurrencyMode.Reentrant)>