Microsoft TS: Windows Communication Foundation velopment with Microsoft .NET Framework 4 Sample Questions:

1. A service implements the following contract. (Line numbers are included for reference only.)

The service is implemented as follows.

ContosoService uses NetMsmqBinding to listen for messages. The queue was set up to use transactions for adding and removing messages.
You need to ensure that OperationOne and OperationTwo execute under the same transaction context when they are invoked in the same session.
What should you do?

A) Insert the following attribute to OperationOne on ContosoService.
<OperationBehavior(
TransactionScopeRequired:=True,
TransactionAutoComplete:=False)>
Insert the following attribute to OperationTwo on ContosoService.
<OperationBehavior
(TransactionScopeRequired:=True,
TransactionAutoComplete:=True)>
B) Insert the following attribute to OperationOne on IContosoService.
<TransactionFlow(TransactionFlowOption.Mandatory)>
Insert the following attribute to OperationTwo on IContosoService.
<TransactionFlow(TransactionFlowOption.Mandatory)>
C) Add the following XML segment to the application config file in the
system.serviceModel/bindings configuration section.
<netMsmqBinding>
<binding name="contosoTx" durable="true" receiveContextEnabled="true" />
</netMsmqBinding>
Then use the NetMsmqBinding named contosoTx to listen for messages from the clients.
D) Add the following XML segment to the application config file in the
system.serviceModel/bindings configuration section.
<customBinding>
<binding name="contosoTx">
<transactionFlow />
<binaryMessageEncoding />
<msmqTransport durable="true" />
</binding>
</customBinding>
Then use the CustomBinding named contosoTx to listen for messages from the clients.

2. You are developing a client that sends several types of SOAP messages to a Windows Communication Foundation (WCF) service method named PostData.
PostData is currently defined as follows.
[OperationContract]
void PostData(Order data);
You need to modify PostData so that it can receive any SOAP message.
Which code segment should you use?

A) [OperationContract] void PostData(Message data);
B) [OperationContract(IsOneWay = true, Action = "*", ReplyAction = "*")] void PostData(BodyWriter data);
C) [OperationContract(IsOneWay = true, Action = "*", ReplyAction = "*")] void PostData(Order data);
D) [OperationContract] void PostData(BodyWriter data);

3. You have a Windows Communication Foundation (WCF) service.
The service has issues with performance when it receives messages on a specific endpoint. The service must collect the minimum number of performance counters to diagnose the message issues.
You need to configure the service.
In the web.config file for the service, what should you do?

A) In the service configuration diagnostics section, set the value of the performancCounters property to All.
B) Enable the Windows Management Instrumentation (WMI) provider.
C) In the service configuration diagnostics section, set the value of the performanceCounters property to ServiceOnly.
D) Enable message logging for the endpoint.

4. You are creating an ASP NET web application that hosts several Windows Communication Foundation (WCF) services the services have ASP.NET Compatibility Mode enabled.
Users authenticate with the Web application by using a cookie-based ASR NET Forms Authentication model. You add a service tile named Authentication. svc that contains the following code segment
<%@ SenviceHost Servicee"System
Web Application Services Authentication Service"Factory="System.Web.ApplicationServices.AppicationServicesHostFactory' %>.
You need to ensure that users can access the WCF services without having to re-authenticate.
Which two configuration settings should you add? (Each is part of a complete solution. Choose two.)

A) Add a custom service behavior named AuthenticationServiceTypeBehaviors with a serviceAuthenticationManager element that has serviceAuthenticationManagerType set to System Web Security. SQL Membership Provider
B) In the system web.extensions/scripting/webServices/authenticationService element, set the enabled attribute to true.
C) Add a service endpoint with basicHttpBinding for the contract System.WebApplicationServices.AuthenticationService.
D) In the system web.extensions/scripting/webServices/profileService element, set the enabled attribute to true.

5. You create a Windows Communication Foundation (WCF) service.
You need to ensure that specific users can enable message logging for the service at runtime.
In the configuration file for the service, what should you do?

A) Enable a shared XMLTraceListener object.
B) Enable the Windows Management Instrumentation (WMI) provider.
C) Enable message logging.
D) Enable debug compilation.

Solutions: