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

1. You are modifying an existing Windows Communication Foundation (WCF) service that is defined as follows;

SubmitOrder makes a call to another service.
The ProcessMessage method does not perform as expected under a heavy load you need to enable processing of multiple messages.
New messages must only be processed when the ProcessMessage method is not processing requests, or when it is waiting for calls to SubmitOrder to return.
Which attribute should you apply to the MessageProcessor class?

A) ServiceBehavior (Conc urrencyMode: =Conc urrencyMode. Reentrant)
B) CallbackBehavior (ConcurrencyMode: ConcurrencyMode Reentrant)
C) ServiceBehavior (ConcurrencyMode ConcurrencyMode Multiple)
D) CallbackBehavior (ConcurrencyMode:=ConcurrencyModeMuttiple)

2. An ASP.NET application hosts a RESTful Windows Communication Foundation (WCF) service at /Services/Contoso.svc. The service provides a JavaScript resource to clients. You have an explicit reference to the JavaScript in your page markup as follows.
<script type="text/javaScript" src="/Services/Contoso.svc/js" />
You need to retrieve the debug version of the service JavaScript.
What should you do?

A) In the <%@ ServiceHost %> header for /Services/Contoso.svc, set the Debug attribute to true.
B) In the <%@ Page %> header, set the Debug attribute to true.
C) In the script tag, add a debug attribute and set its value to true.
D) In the script tag, append debug to the src attribute.

3. The following is an example of a SOAP envelope.
<s:Enelope xmlns:se'http://schemas.xmlsoporg/soap/envelopef'>
<s: Header> <h:Storeld xmlns:he"http:/!www.contoso.com"s
<Ih: Storeld>
</s:Header>
<s:Body>
<CheckStockRequest xmlnsehttp://wwwcorIosocom">
<ltemld>2469 <Iltenld>4
</CheckStoc kRequest>
<Is: Body>
<Is: Envelope>
You need to create a message contract that generates the SOAP envelope.
1 which code segment should you use?

A) (MessageContract(WrapperNamespace="httpJ/www. contoso.com")] public class
CheckStockRequest
{
[MessageHeader(Namespace11tp:IIwww. contoso. comn")]
public int Storeld{get set;}
(MessageBodyMember]
public int ltemmld(get set}
}
B) [MessageContract(WrapperName="http:I/www. contoso. comn")]
public class CheckStockRequest {
[MessageHeader(Nanez"http:llwww.contoso.com")] public mnt Storeld{get; set.}
[MessageBodyMember(Namee'intp://www..contoso.com")] public nit itemld{get set;)
}
C) [MessageContract(WrapperNamespace="http:I/www.contoso.comn")] public class
CheckStoc kRequest
{
[MessageHeader(Namespaces"http:I/www.contosocom")]o
public nmt Storeld{get; set;)
[MessageBodyMember(Namespaces"http://www. contoso . comn")]
public nmt ltemld{get; set;}
}
D) [MessageContract(WrapperNamespace="http://www. contosocom")] pi+-lic class
CheckStockRequest
{
[MessageHeader(Na-mespacesttp://wwwcontoso. comn")]
public mnt Storeld{get set.}
public mnt ltemld{get: set;}
)

4. You are developing a client application that consumes a Windows Communication
Foundation (WCF) service. The operation contract is as follows.
<OperationContract()>
<FaultContract(GetType(SalesFault))>
Function GetSales(ByVal saieId As String) As String
The service configuration file contains the following line in the serviceBehaviors section.
<behovior>
oerviceDebug includeExceptionDetoilInFaults-"True'V>
</behavior>
A divide-by-zero exception is not being handled by the service.
You need to ensure that the exception is caught in the client application.
Which type of exception should the client catch?

A) FaultException(Of SalesFault)
B) DivideByZeroException
C) TimeoutException
D) FaultException

5. You are creating a Windows Communication Foundation (WCF) service. The service endpoints change frequently.
On the service, you add a new ServiceDiscoveryBehavior to the Behaviors collection of the ServiceHost Description property.
You need to ensure that client applications can communicate with the service and discover changes to the service endpoints.
What should you do?

A) Add a new AnnouncementClient to the Behaviors collection in the client application.
B) Add a new ServiceDiscoveryBehavior to the Behaviors collection in the client application.
C) Use the DiscoveryProxy class and the EndpointDiscoveryMetadata class to set up the binding in the client application.
D) Use the FindCriteria class and the UdpDiscoveryEndpoint class to set up the binding in the client application.

Solutions: