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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 write the following code segment.

You need to ensure that when the MyMethod method is called, the service is the root of a transaction.
Which code segment should you insert at line 08?

A) <OperationBehavior(TransactionScopeRequired:=False)> _ <TransactionFlow(TransactionFlowOption.Mandatory)> _
B) <OperationBehavior(TransactionScopeRequired:=True)> _ <TransactionFlow(TransactionFlowOption.Allowed)> _
C) <OperationBehavior(TransactionScopeRequired:=True)> _ <TransactionFlow(TransactionFlowOption.NotAllowed)> _
D) <OperationBehavior(TransactionScopeRequired:=False)> _ <TransactionFlow(TransactionFlowOption.NotAllowed)> _

2. You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. The service uses the net.tcp transport. You need to ensure that when the server starts, the service starts and continues to run. What should you do?

A) Host the service in a Windows Presentation Foundation application.
B) Host the service in a Windows service.
C) Host the service under IIS 7.0 by using IIS 6.0 compatibility mode.
D) Host the service under IIS 7.0 by using Windows Activation Services.

3. You create a Windows Communication Foundation (WCF) service by using Microsoft .NET Framework 3.5. The WCF service accepts service requests from different partner applications. One of the partner applications occasionally receives faults.
You need to identify why the service is generating faults. You must accomplish this goal without interrupting the service.
What should you do?

A) Connect remotely to the WCF service by using a debugger. Place breakpoints in the
exception handling code segment.
B) Run SvcTraceViewer.exe /register on the WCF server.
C) Add the following code segment to the application configuration file.
<system.diagnostics>
<switches>
<add name="WcfFaultTrace" value="Error" />
</ switches>
</system.diagnostics>
D) Configure the Service Tracing options in the application configuration file. Analyze the
trace results by using the SvcTraceViewer.exe program.

4. You have some code:
<system.diagnostics>
<sources>
(.......)
<listeners>
<add name="DefaultListener" />
</listeners>
</source>
</sources>
What line should you insert at (......) to enable tracing?

A) <source name="System.ServiceModel.MessageLogging">
B) <source name="System.ServiceModel" switchValue="ActivityTracing" propagateActivity="true">
C) <source name="System.ServiceModel" switchValue="ActivityTracing" propagateActivity="false">
D) <source name="System.ServiceModel" switchValue="Information, ActivityTracing" propagateActivity="true">

5. You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5.
The service contains the following code segment.
[ServiceContract]
public interface IMathSrvc
{
[OperationContract]
void AddNumbers(int num);
[OperationContract]
int Clear();
}
You need to ensure that the service meets the following requirements:
Which code segment should you use to replace the existing code segment?

A) [ServiceContract]
public interface IMathSrvc
{
[OperationContract]
void AddNumbers(int num);
[OperationContract(IsInitiating=false, IsTerminating=true)]
int Clear();
}
B) [ServiceContract]
public interface IMathSrvc
{
[OperationContract(IsTerminating=false)]
void AddNumbers(int num);
[OperationContract(IsTerminating=true)]
int Clear();
}
C) [ServiceContract]
public interface IMathSrvc
{
[OperationContract(IsInitiating=true, IsOneWay=true)]
void AddNumbers(int num);
[OperationContract(IsTerminating=true)]
int Clear();
}
D) [ServiceContract]
public interface IMathSrvc
{
[OperationContract(IsOneWay=true)]
void AddNumbers(int num);
[OperationContract(IsTerminating=true)]
int Clear();
}

Solutions: