Microsoft : 70-503 Questions & Answers

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 B
• B. Option D
• C. Option A
• D. Option C

You create an application by using Microsoft Visual Studio .NET 2008 and the .NET Framework 3.5. You configure the Windows Communication Foundation (WCF) service to be exposed by using the HTTP and TCP endpoints. You plan to deploy the WCF service.
You need to identify the host environment that provides the following services:
Which hosting environment should you use?

• A. Microsoft Internet Information Services 6.0
• B. Microsoft Windows Process Activation Service
• C. Microsoft COM+ 1.5
• D. Microsoft Windows Service

You create a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. You want to enable message logging. You add the following code fragment to the service configuration file.
<system.diagnostics> <sources> <source name="System. ServiceModel. Messagel_ogging">
<listeners> odd name="messages"
type="System. Diagnostics. XmlWriterTraceListener" />
</listeners> </source> </sources> </system.diagnostics>
You receive an exception. You need to successfully enable message logging. What should you do?

• A. Set the initializeData attribute to the name of a log file.
• B. Set the maximum size of the message to be logged to 256K.
• C. Remove the message filter.
• D. Set the switchValue attribute to verbose.

You have created a Windows Communication Foundation service by using Microsoft .NET Framework 3.5.
The existing service interface is named IMyService, and contains the following code segment.

You create a new service named IMyServiceVI that contains an operation named DoSomethingElse.
You need to ensure that existing client applications are still able to access the IMyService.DoSomething method without modifying client code.
Which code segment should you use?

• A. Option B
• B. Option D
• C. Option A
• D. Option C

You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. You create the following service contract.
[ServiceContract]
public interface IMyService
{
[OperationContract]
void DoSomething();
}
The service will not use any external resources.
You need to ensure that the calls to the DoSomething operation are thread-safe.
What are the two possible service implementations that you can use to achieve this goal?
(Each correct answer presents a complete solution. Choose two.)

• A. [ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Multiple,
  InstanceContextMode=InstanceContextMode.PerSession)]
  public class serviceImpl : MyService
  {
  public void DoSomething(){ }
  }
• B. [ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Single,
  InstanceContextMode=InstanceContextMode.Single)]
  public class serviceImpl : MyService
  {
  public void DoSomething(){ }
  }
• C. [ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Multiple,
  InstanceContextMode=InstanceContextMode.Single)]
  public class serviceImpl : MyService
  {
  public void DoSomething(){ }
  }
• D. [ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Multiple,
  InstanceContextMode=InstanceContextMode.PerCall)]
  public class serviceImpl : MyService
  {
  public void DoSomething(){ }
  }