• Description: MS.NET Framework 3.5, Windows Communication Foundation Application
• Passing Score: 0%
• Practice Test - Number of questions: 142 questions
• Simulation Test - Number of questions: 142 questions
• Simulation Test Duration: 120 minutes
• Has explanations: No

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.)

Answer(s)

1. [ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Multiple,InstanceContextMode=InstanceContextMode.Single)]public class ServiceImpl : IMyService{public voidDoSomething() { }}
2. [ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Single,InstanceContextMode=InstanceContextMode.Single)]public class ServiceImpl : IMyService{public voidDoSomething() { }}
3. [ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Multiple,InstanceContextMode=InstanceContextMode.PerSession)]public class ServiceImpl : IMyService{public void
4. { }}D. [ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Multiple,InstanceContextMode=InstanceContextMode.PerCall)]public class ServiceImpl : IMyService{public voidDoSomething() { }}

[ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Single,InstanceContextMode=InstanceContextMode.Single)]public class ServiceImpl : IMyService{public voidDoSomething() { }}

{ }}D. [ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Multiple,InstanceContextMode=InstanceContextMode.PerCall)]public class ServiceImpl : IMyService{public voidDoSomething() { }}