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

1. You create a Windows Communication Foundation (WCF) application by using Microsoft .NET Framework 3.5. The desktop client calls the WCF service to query its status. The call can take up to 10 seconds to complete. The client application must remain responsive when querying the service. You need to generate the required proxy.
What should you do?

A) Execute the svcutil http: //localhost:8000/MyWCF /async command.
B) Execute the svcutil /validate /serviceName:MyWCF myServiceHost.exe command.
C) Execute the svcutil myServiceHost.exe /serviceName:MyWCF command.
D) Clear the Generate asynchronous operation check box in the Add Service Reference Settings dialog box.

2. You are creating a Windows Communication Foundation client application by using Microsoft .NET Framework 3.5.
The client application consumes the Web Services Enhancements (WSE) 3.0 Web service.
The Web service uses standard WSE 3.0 to transfer binary data to the client application.
The client application uses the following binding configuration.
(Line numbers are included for reference only.)

You need to ensure that the client application receives binary data from the WSE 3.0 Web service.
Which code fragment should you insert at line 03?

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

3. You create a Windows Communication Foundation (WCF) application by using Microsoft Visual Studio 2008 and the .NET Framework 3.5. You create a WCF service by using the following code segment. (Line numbers are included for reference only.)
01 [ServiceContract]
02 public interface IContosoService
03 {
04 [OperationContract]
06 void ProcessTransaction();
07 }
09 public class ContosoService : IContosoService
10 {
11 public void ProcessTransaction() {
12 try {
13 BusinessComponent.ProcessTransaction();
14 }
15 catch (ApplicationException appEx) {
17 }
18 }
19 }
The BusinessComponent.ProcessTransaction method will only throw exceptions from the ApplicationException type. You plan to debug the WCF service. You need to ensure that the WCF service meets the following requirements:
Detailed exception information is provided to the client application. Subsequent calls can be issued to the service by using the same proxy intance after an exception is caught in the client application. What should you do?

A) Add the following code segment at line 05. [FaultContract(typeof(ApplicationException))]
Add the following code segment at line 16. throw new
FaultException<ApplicationException>(appEx);
B) Add the following code segment at line 08.
[ServiceBehavior(IncludeExceptionDetailInFaults=true)] Add the following code segment at
line 16. throw new FaultException<ApplicationException>(appEx);
C) Add the following code segment at line 05. [FaultContract(typeof(ApplicationException))]
Add the following
code segment at line 16. throw appEx;
D) Add the following code segment at line 08.
[ServiceBehavior(IncludeExceptionDetailInFaults=true)] Add the following code segment at
line 16. throw appEx;

4. 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 D
B) Option B
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 D
B) Option B
C) Option C
D) Option A

Solutions: