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

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

3. 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) <DataContract()> _
Public Class Customer
Public Property Id() As Integer
...
End Property
Public Property Name() As String
...
End Property
Private Property BalanceDue() As Double
...
End Property
End Class
B) <DataContract()> _
Public Class Customer
<DataMember()> _
Private Property Id() As Integer
...
End Property
<DataMember()> _
Public Property Name() As String ... End Property Public Property BalanceDue() As Double ... End Property End Class
C) <DataContract()> _ Public Class Customer <DataMember(EmitDefaultValue:=True)> _ Public Property Id() As Integer ... End Property <DataMember(EmitDefaultValue:=True)> _ Public Property Name() As String ... End Property <DataMember()> _ Friend Property BalanceDue() As Double ... End Property End Class
D) <DataContract()> _ Public Class Customer <DataMember()> _ Public Property Id() As Integer ... End Property <DataMember()> _ Public Property Name() As String ... End Property <DataMember(EmitDefaultValue:=False)> _ Public Property BalanceDue() As Double ... End Property End Class

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

You need to ensure that the service instance is recycled when the transaction is complete. Which line of code should you insert at line 06?

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

5. You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5.
You need to ensure that the service can send data in the following format to the client applications.
<Account ld="">
<Name> </Name>
<Balance Currency=""> </Balance> </Account>
Which code segment should you use?

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

Solutions: