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

Question 1

You are modifying a Windows Communication Foundation (WCF) service that allows customers to update financial data. The service currently requires a transaction from the client application and is working correctly. The service contract is defined as follows. (Line numbers are included for reference only.)

The service must be modified so that client applications do not need to initiate a transaction when calling the operation. The service must use the client application's transaction if one is available. Otherwise it must use its own transaction.
You need to ensure that the service operation is always executed within a transaction.
What should you do?

A. Option D

B. Option B

C. Option A

D. Option C

Correct Answer: A

Question 2

You are developing an application to update a users social status. You need to consume the service using Windows Communication Foundation (WCF).
The client configuration is as follows.
<system.serviceModel>
<bindings>
<webHttpBinding>
<binding name="SocialConfig">
<security mode="TransportCredentialOnly">
<transport clientCredentialType="Basic"
realm="Social API" />
</security>
</binding>
</webHttpBinding>
</bindings>
<client>
<endpoint address= " http:// contoso .com "
binding="webHttpBinding"
bindingConfiguration="SocialConfig"
ontract="ISocialStatus"
name="SocialClient" />
</client>
</system.serviceModel>
The service contract is defined as follows.
<ServiceContract()>
Public Interface ISocialStatus
<OperationContract()>
<WebInvoke(UriTemplate:="/statuses/update.xml?status={text}")>
Sub UpdateStatus(ByVal text As String)
End Interface
Which code segment should you use to update the social status?

A. Using factory As ChannelFactory(Of ISocialStatus) =
New ChannelFactory(Of ISocialStatus)("POST")
factory.Credentials.Windows.ClientCredential.UserName =
user.Name
factory.Credentials.Windows.ClientCredential.SecurePassword.SetAt(
0, user.Password)
Dim socialChannel As ISocialStatus = factory.CreateChannel()
socialChannel.UpdateStatus(newStatus)
End Using

B. Using factory As WebChannelFactory(Of ISocialStatus) =
New WebChannelFactory(Of ISocialStatus)(GetType(ISocialClient))
factory.Credentials.Windows.ClientCredential.UserName =
user.Name
factory.Credentials.Windows.ClientCredential.SecurePassword.SetAt(
0, user.Password)
Dim socialChannel As ISocialStatus = factory.CreateChannel()
socialChannel.UpdateStatus(newStatus)
End Using

C. Using factory As WebChannelFactory(Of ISocialStatus) =
New WebChannelFactory(Of ISocialStatus)("SocialClient")
factory.Credentials.UserName.UserName = user.Name
factory.Credentials.UserName.Password = user.Password
Dim socialChannel As ISocialStatus =
factory.CreateChannel()
socialChannel.UpdateStatus(newStatus)
End Using

D. Using factory As ChannelFactory(Of ISocialStatus) =
New WebChannelFactory(Of ISocialStatus)(GetType(ISocialStatus))
factory.Credentials.UserName.UserName = user.Name
factory.Credentials.UserName.Password = user.Password
Dim socialChannel As ISocialStatus =
factory.CreateChannel() socialChannel.UpdateStatus(newStatus) End Using

Correct Answer: C

Question 3

You want to debug the Windows Communication Foundation (WCF) client and server interaction through message and application tracing.
You need to correlate traces generated on the client and the server.
Which XML segment should you add to the system. diagnostics configuration element in the client and server application configuration file?

A. <sources>
<source names"System. ServiceModel" switchValues'VerboseActivityTracing"> <listeners>
<add namee"ServiceModelTraceListener" /> </listeners> </source>
</sources>

B. <sources> <source propagate Activitye'true" namee"System Service Model"
switchValues'Warning, ActivityTracing'> <listeners
<add namez"ServiceModelTraceListener" /> </listeners>
</source> </sources>

C. <sources>
<source names"System. ServiceModeiMessageLogging" propagateActivitye'true" switch Values' Warning, ActivityTracing'5 <listeners> <add name="ServiceModelTraceListener" I> </listeners> </source> </sources>

D. <sources> <source names" System ServiceModel. MessageLogging"
switchValuee"Verbose"> <listeners>
<add namez"ServiceModelTraceListener" /> <Listeners>
</source> </sources>

Correct Answer: B

Question 4

You are creating a client application and configuring it to call a Windows Communication
Foundation (WCF) service. When the application is deployed, it will be configured to send
all messages to a WCF routing service.
You need to ensure that the application can consume the target service after the application is deployed.
What should you do?

A. In the client application, add a service reference to the router service. In the client binding configuration, specify the address of the target service.

B. In the client application, add a service reference to the router service. In the client binding configuration, specify the address of the router service.

C. In the client application, add a service reference to the target service. In the client binding configuration, specify the address of the target service.

D. In the client application, add a service reference to the target service. In the client binding configuration, specify the address of the router service.

Correct Answer: D

Question 5

You are creating a client application and configuring it to call a Windows Communication Foundation (WCF) service. When the application is deployed, it will be configured to send all messages to a WCF routing service.
You need to ensure that the application can consume the target service after the application is deployed.
What should you do?

A. In the client application, add a service reference to the router service. In the client binding configuration, specify the address of the target service.

B. In the client application, add a service reference to the router service. In the client binding configuration, specify the address of the router service.

C. In the client application, add a service reference to the target service. In the client binding configuration, specify the address of the target service.

D. In the client application, add a service reference to the target service. In the client binding configuration, specify the address of the router service.

Correct Answer: D

Question 6

An ASP NET application hosts a RESTful Windows Communication Foundation (WCF)
service at /ServiceslContoso.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' srcsIServices/Contoso. svc/js" /> You need to retrieve the debug version of the service JavaScript. What should you do?

A. In the script tag, add a debug attribute and set its value to true.

B. In the <%@ ServiceHost %> header for /ServiceslContoso.svc, set the Debug attribute to true.

C. In the <%@ Page %s header, set the Debug attribute to true.

D. In the script tag, append debug to the src attribute

Correct Answer: D

Question 7

You are developing a Windows Service. The Windows Service will host a Windows Communication Foundation (WCF) service.
The Windows Service class will inherit from ServiceBase.
You need to ensure that the WCF service starts when the Windows Service is restarted.
What should you do in the Windows Service class?

A. Create a public method named Main.
Create a new ServiceHost in the Main method.
Override the OnShutdown method and close the ServiceHost.

B. Override the OnContinue method and open a new ServiceHost.
Override the OnStop method and close the ServiceHost.

C. Override the OnPowerEvent method and open a new ServiceHost.
Override the OnShutdown method and close the ServiceHost.

D. Override the OnStart method and create and open a new ServiceHost.
Override the OnStop method and close the ServiceHost.

Correct Answer: D

Question 8

Four Windows Communication Foundation (WCF) services are hosted in Microsoft Internet Information Services (IIS). No behavior configuration exists in the web.config file.
You need to configure the application so that every service and endpoint limits the number of concurrent calls to 50 and the number of concurrent sessions to 25.
Which XML segment should you add to the system.serviceModel configuration section of the web.config file?

A. <behaviors>
< serviceBehaviors >
<behavior name="">
< serviceThrottling maxConcurrentCalls ="50" maxConcurrentSessions ="25"/>
</behavior>
</ serviceBehaviors >
</behaviors>

B. < behaviors>
< serviceBehaviors >
<behavior name="default">
< serviceThrottling maxConcurrentCalls ="50" maxConcurrentSessions ="25"/>
</behavior>
</ serviceBehaviors >
</behaviors>

C. <behaviors>
< serviceBehaviors >
< behavior name= " * " >
< serviceThrottling maxConcurrentCalls ="50" maxConcurrentSessions ="25"/>
</behavior>
</ serviceBehaviors >
</behaviors>

D. <behaviors>
< serviceBehaviors >
<behavior name=" ALL ">
< serviceThrottling maxConcurrentCalls ="50" maxConcurrentSessions ="25"/>
</behavior>
</ serviceBehaviors >
</behaviors>

Correct Answer: A

Question 9

You are creating a Windows Communication Foundation (WCF) service. You do not want to expose the internal implementation at the service layer.
You need to expose the following class as a service named Arithmetic with an operation named Sum.
Public Class Calculator Public Function Add (ByVal x As Integer, ByVal y As Integer) As Integer End Function End Class Which code segment should you use?

A. <ServiceContract(ConfigurationName:="Arithmetic")> Public Class Calculator <OperationContract(Action:="Sum")> Public Function Add(ByVal x As Integer, ByVal y As Integer) As Integer End Function End Class

B. <ServiceContract(Name:="Arithmetic")> Public Class Calculator <OperationContract(ReplyAction:="Sum")> Public Function Add(ByVal x As Integer, ByVal y As Integer) As Integer End Function End Class

C. <ServiceContract(Name:="Arithmetic")> Public Class Calculator <OperationContract(Name:="Sum")> Public Function Add(ByVal x As Integer, ByVal y As Integer) As Integer End Function End Class

D. <ServiceContract(Namespace:="Arithmetic")> Public Class Calculator <OperationContract(Action:="Sum")> Public Function Add(ByVal x As Integer, ByVal y As Integer) As Integer End Function End Class

Correct Answer: C

Question 10

DRAG DROP
You are creating a Windows Communication Foundation (WCF) service.
The service must be able to transmit messages back to the client application.
You need complete the web.config file for the service.
How should you complete the relevant markup? (To answer, drag the appropriate markup segments to the correct location or locations in the answer area. Each markup segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.)

Correct Answer:

Question 11

The endpoint of a Windows Communication Foundation (WCF) service uses basicHttpBinding for its binding. Your company's policies have changed to require that messages not be sent in clear text.
You must ensure that all messages are encrypted when traveling across the network.
What should you do?

A. Set the PrincipalPermissionAttribute on the service contract and update the binding attribute in the endpoint element of the configuration file to wsHttpBinding.

B. Set the PrincipalPermissionAttribute on the service contract and update the bindingConfiguration attribute in the endpoint element of the configuration file to
wsHttpBinding.

C. Set the ProtectionLevel property on the service contract and update the bindingConfiguration attribute in the endpoint element of the configuration file to webHttpBinding.

D. Set the ProtectionLevel property on the service contract and update the binding attribute in the endpoint element of the configuration file to wsHttpBinding.

Correct Answer: D

Microsoft TS: Windows Communication Foundation velopment with Microsoft .NET Framework 4 - 070-513 Exam Practice Test

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