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Microsoft TS: Microsoft .NET Framework 3.5 C Windows Communication Foundation Sample Questions:

1. You create a Windows Communication Foundation client application by using Microsoft .NET Framework 3.5. The client application communicates with an existing Web service that requires custom HTTP headers. You need to ensure that all messages sent to the service include the headers. Which two tasks should you perform? (Each correct answer presents part of the solution. Choose two.)

A) Create a custom endpoint behavior. Add the message inspector by using the IEndpointBehavior.ApplyClientBehavior method.
B) Create a message inspector. Insert the custom headers by using the ICIientMessagelnspector.AfterReceiveReply method.
C) Create a message inspector. Insert the custom headers by using the ICIientMessagelnspector.BeforeSendRequest method.
D) Create a custom endpoint behavior. Add the message inspector by using the IEndpointBehavior.AddBindingParameters method.

2. You create a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. You create the following service contract.
[ServiceContract]
public interface IMath
{
[OperationContract]
int Add(int num1, int num2);
}
You need to add an operation contract to perform the Add operation asynchronously. Which operation contract should you use?

A) [OperationContract]IAsyncResult BeginAdd(int num1, int num2);[OperationContract]int EndAdd (IAsyncResult res);
B) [OperationContract(AsyncPattern=true)]IAsyncResult BeginAdd(int num1, int num2,
AsyncCallback cb,
object state);int EndAdd(IAsyncResult res);
C) [OperationContract(AsyncPattern=true)]IAsyncResult BeginAdd(int num1, int num2);int EndAdd (IAsyncResult res);
D) [OperationContract]int BeginAdd(int num1, int num2, AsyncCallback cb, object state);IAsyncResult EndAdd ();

3. You create a Windows Communication Foundation (WCF) service by using Microsoft .NET Framework 3.5. The WCF service contains the following code segment.

A console application hosts the WCF service. A Microsoft Windows client application uses the WCF service.
You need to implement the callback operation for the client application. You also need to ensure that the callback operation will not encounter deadlocks during execution.
Which code segment should you use?

A) Option B
B) Option D
C) Option C
D) Option A

4. You create a service by using Microsoft .NET Framework 3.5. You use Windows
Communication Foundation to create the service.
You use the WSHttpBinding binding to prevent tampering of the data. Users report that the
data is unreadable.
You need to troubleshoot the problem by logging the incoming messages. Which code fragment should you use?

A) Option B
B) Option D
C) Option C
D) Option A

5. You are creating a Windows Communication Foundation (WCF) service by using Microsoft .NET Framework 3.5. You create a class named Customer for the WCF service. The Customer class has properties named Id, Name, and BalanceDue.
You plan to convert the Customer class into a data contract.
You need to ensure that only the Id property and the Name property are passed to the client applications.
Which code segment should you use?

A) Option B
B) Option D
C) Option C
D) Option A

Solutions: