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

1. 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 ();

2. You are creating a Windows Communication Foundation (WCF) service by using Microsoft .NET Framework 3.5. You need to use a custom service host to host the WCF service in Windows Activation Services (WAS).
What should you do?

A) Create a custom service host factory that instantiates the custom service host. Include a reference to this factory in the .svc file.
B) Add code to instantiate the custom service host from within the main procedure of the WCF service.
C) Write hosting code for the WCF service.
D) Add a reference to the custom service host in the web.config file.

3. You create a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. You define the following data contract.

You need to identify the structure of the resulting XML instance document. Which structure will the data contract produce?

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

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

Client applications pass an instance of the Customer class to the service.
You create a new version of the data contract and replace the Name property with the FirstName property.
You need to ensure that the existing client applications can continue to consume the service without modifying their code.
Which code segment should you use?

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

5. 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.

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

Solutions: