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

1. 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) Configure the Service Tracing options in the application configuration file. Analyze the
trace results by using the SvcTraceViewer.exe program.
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) Connect remotely to the WCF service by using a debugger. Place breakpoints in the
exception handling code segment.

2. You are creating a Windows Communication Foundation (WCF) service by using Microsoft .NET Framework 3.5. The service will authenticate the client applications by using Personal Information Cards. You write the following code segment. (Line numbers are included for reference only.)

You need to ensure that only those client applications that provide a valid e-mail address can execute the Update method. Which code segment should you insert at line 15?

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

3. You are creating a remote database management application by using Microsoft Windows Forms and Microsoft .NET Framework 3.5
You use the Windows Communication Foundation model to create the application. You write the following code segment. (Line numbers are included for reference only.)

You need to ensure that each time a client application calls the Open() method, a new service instance is created.
Which code segment should you insert at line 03?

A) [OperationBehavior(ReleaseInstanceMode=ReleaseInstanceMode.BeforeCall)]
B) [OperationBehavior(ReleaseInstanceMode=ReleaseInstanceMode.None)]
C) [OperationBehavior(TransactionScopeRequired=true)]
D) [OperationBehavior(AutoDisposeParameters=true)]

4. You want to upgrade a ASMX webservice to WCF, but you want to support legacy client applications.
<some code here>
What code do you use to transfer binary data from the server to the client?

A) BindingElement encoding = new MtomMessageEncodingBindingElement(.....)
B) BindingElement encoding = new TextMessageEncodingBindingElement (Soap12WSAddressingAugust2004..)
C) BindingElement encoding = new BindingElement()
D) BindingElement encoding = new TextMessageEncodingBindingElement(MessageVersion.Soap11.....)

5. You create a Windows Communication Foundation (WCF) service by using Microsoft .NET Framework 3.5. You need to enable WCF tracing at runtime by using Windows Management Instrumentation (WMI). Which three tasks should you perform? (Each correct answer presents part of the solution. Choose three.)

A) Set up a message log listener in the configuration file. Set all trace properties to false.
B) Set the performanceCounters attribute to ServiceOnly in the configuration file.
C) Set up a System. ServiceModel trace listener in the configuration file. Set all trace properties to false.
D) Set the wmiProviderEnabled attribute to true in the configuration file.
E) Use WMI to set the AppDomainlnfo trace properties to true.

Solutions: