070-513 무료 덤프문제 온라인 액세스

You are developing a Windows Communication Foundation (WCF) service. The following code defines and implements the service. (Line numbers are included for reference only.)

You need to ensure that two identical copies of the received message are created in the service.
Which code segment should you insert at line 14?

• A.Dim buffer As MessageBuffer = message.
  CreateBufferedCopy(8192)
  Dim msgCopy As Message = buffer.CreateMessage()
  Dim returnMsg As Message = msgCopy
• B.Dim msgCopy As Message = TryCast(
  TryCast(message.CreateBufferedCopy(8192), Object), Message)
  Dim returnMsg As Message = TryCast(
  TryCast(message.CreateBufferedCopy(8192), Object), Message)
• C.Dim msgCopy As Message = message
  Dim returnMsg As Message = message
• D.Dim buffer As MessageBuffer = message.
  CreateBufferedCopy(8192)
  Dim msgCopy As Message = buffer.CreateMessage()
  Dim returnMsg As Message = buffer.CreateMessage()

A Windows Communication Formation (WCF) client and service share the following service contract interface
<ServiceContractO>
Public Interface IContosoService <OperationContractO>
Sub SasePerson(BWal person As Person) End Interface They also use the following
binding.
Dim binding As NetTcpBinding = New NetTcpBinding With {TransactionFlow = True) The
client cals the service with the (following code using (mransactionScope ts = new
TransactionScope(TransactionScopeOption
Required))
{
IContosoService client = factoryCreateChannelO;
client SavePerson(person);
Consde. WriteLine(
Transaction. CurreriTransactioninformation
DistnbutedldentifierX
ts CorrpleteO;
)
The service has the following impementation for SavePerson
Public Sub SavePerson(ByVal person As Perwn) - implements IContosoService
SavePerson person Save()
ConsdeWriteLine(Transaction .Current Transactionlnformaiona
Distributedldentifier)
End Sit
The distributed identifiers do not match on the client and the server.
You need to ensure that the client and server enlist in the same distributed transaction
What should you do?

• A.Add the following attribute to the SavePerson operation on KOontosoService.
  <TransactionFlow(TransactionFbwOption Allowed)>
  Add the following attribute to the implementation of SavePeson.
  eOperationBehavior(TransactionSc
  opeRequired True)>
• B.Add the following attribute to the SavePerson operation on KContosoService.
  <OperationBehavior(TransachonSc opeRequired True)>
  Add the following attribute to the implementation of SavePeson.
  <TransactionFlow(TransactionFbwOption
  Allowed)>
• C.Add the following attributes to the SavePerson operation on lContosoService
  eOperationBehavior(TransactionSc opeRequired =True)>
  <TransactionFlow(TransactionFbwOption Madatory)>
• D.Add the following attributes to the SavePerson operation on IContosoSewvice
  <TransactionFlow(TransactionFbwOption Maidatory)>
  eOperationBehavior(TransactionSc opeRequired zTrue)>

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

You need to modify a client application that consumes a Windows Communication Foundation (WCF) service.
The service metadata is no longer available.
You need to modify the previously generated proxy to include asynchronous calls to the service.
What should you do?

• A.Create a class with the same name as the previously generated proxy and add the new asynchronous methods. Add the new class to a namespace that is different from the original proxy.
• B.Create a partial class for the previously generated proxy and include the new asynchronous methods.
• C.Update the service reference with the Generate asynchronous operations option.
• D.Create a class with the same name as the previously generated proxy and add the new asynchronous methods as partial methods. Add the new class to a namespace that is different from the original proxy.

You create a Windows Communication Foundation (WCF) service.
The service must meet the following requirements: - Communicate errors as exceptions that originate in the service operations. - Publish the errors as part of the WCF contract.
You need to throw an exception inside the service operation method.
Which type of exception should you throw?

• A.CommunicationException
• B.FaultException
• C.PoisionMessageException
• D.ProtocolException