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QUESTION 311
You have a self-hosted Windows Communication Foundation (WCF) service.
You need to configure the service to provide an X.509 certificate during authentication
What should you use to configure the service?
A. the Certificate property of the X509CertificatelnitiatorServiceCredential class
B. the SetCertificate method of the X509CertificatelnitiatorServiceCredential class
C. the SetCertificate method of the X5O9CertificateRecipientServiceCredential class
D. the TrustedStoreLocation property of the X5O9CertificateRecipientServiceCredential class
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QUESTION 301
A Windows Communication Foundation (WCF) solution uses the following contract.
<ServiceContract(SessionMode:=SessionMode Allowed)s
Public Interface lMyService <OperationContract(lsTerminating:sFalse)s
Sub Initialize ()
<OperationContract(lslnitiating:sFalse)>s
Sub DoSomething()
<OperationContract(lsterminating:=True)>
Sub Terminate ()
End Interface
You need to change this interface so that:
“Initialize is allowed to be called at any time before Terminate is called.
“DoSomething is allowed to be called only after Initialize is called, and not allowed to be called after Terminate is called. “Terminate will be allowed to be called only after Initialize is called
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Change the ServiceContract attribute of the lMyService interface to the following.
ServiceContract(SessionMode:sSessionMode. Required)
B. Change the ServiceContract attribute of the lMyService interface to the following.
ServiceContract(SessionMode:sSessionModeAllowed)?
C. Change the OperationContract attribute of the Initialize operation to the following.
OperationContract(lslnitiating: `True, IsTerminating: `False)
D. Change the OperationContract attribute of the Terminate operation to the following.
OperationContract(Islnitiatings:False, lsTerminating: `True)
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QUESTION 291
A Windows Communication Foixdation (WCF) solution uses the following contracts (Line numbers are included for reference only)
01 eServiceContract(Callback contract: GetType(lNameService))>
02 Putlic Interface I(IeetingService
04 <OperationContractO>
05 Function GetMessage() As Stnng
07 End Interface
09 <ServiceContractO>
10 Public Interface INameService
12 <OperationContractO>
13 Function GetName() As String
15 End Interface
The code that implements the KleetingService interface is as follows.
20 Public Class GretingService
21 Impements lGreaingService
23 Public Function GetMessage0As String –
24 lmpements IGredingService. GetMessage
26 Dim clientChann As INameService =
27 OperationContet. Current.
28 GetCallbackChamel(Of INameService)()
29 Dim clientName As String = clientChannelGetName()
30 Retumn String Format(“Hello {O)”, clientName)
32 End Function
33 hnd Class
The service is self-hosted The hosting code is as follows.
35 Dim host As SeniceHost =
36 New ServiceHost(GetType(GrstingService))?
37 Dim binding As NetTcpBinding =
38 New NetTcpBinding(Sec urityMode. None)
39 hostAddServiceEndpoint(‘Myapplication lGreetingService”.
40 bincng, net.tcp:Ilocalhost: 12345W)
41 HotOpen()l
The code that implements the INameService interface is as follows.
42 Class NameService
43 lmpements INameService
45 Dim name As String
47 Public Sub NameService(ByV name As String)
48 Me.reme = name
49 End Sub
51 Public Function GetName() As String –
52 lmpements INameService. GeName
54 Reti.rn name
55 End Function
56 End Class Currently, this code fails at runtime, and an Invalid Operation Exception is thrown at mne 25.
You need to correct the code so that the call from the service back to the client complets successfully
What e two possible ways to achieve this goal? (Each correct answer presents a complete solution. Choose two.)
A. Change the service contract definition in line 01 as follows.
[ServiceContract(CallbackContract = typeof(INameService),
SessionMode = SessionMode.Required)]
B. Add the following attribute to the NameService class, before line 40.
[ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Reentrant)]
C. Add the following attribute to the GreetingService class, before line 20.
[ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Reentrant)]
D. Add the following attribute to the GreetingService class, before line 20.
[ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Multiple)]
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QUESTION 231
Drag and Drop Question
You are developing a Windows Communication Foundation (WCF) service that contains a method named ProcessPayments.
The service is hosted in Internet Information Services (IIS).
You have the following requirements:
– Create a new instance of the service every time that a client application calls the ProcessPayments method.
– Process every call from client applications one at a time.
You need to complete the code for the WCF service.
Which four code segments should you use in sequence? (To answer, move the appropriate code segments from the list of code segments to the answer area and arrange them in the correct order.)
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QUESTION 281
You are creating a Windows Communication Foundation (WCF) service that implements the following service contract.
<ServiceContract()>
Public Interface IOrderProcessing
<OperationContract()>
Sub ApproveOrder(ByVal id As Integer)
End Interface
You need to ensure that only users with the Manager role can call the ApproveOrder method. What should you do?
A. In the method body, check the Rights.PossessProperty property to see if it contains Manager.
B. Add a PrincipalPermission attribute to the method and set the Roles property to Manager.
C. Add a SecurityPermission attribute to the method and set the SecurityAction to Demand.
D. In the method body, create a new instance of WindowsClaimSet.
Use the FindClaims method to locate a claimType named Role with a right named Manager.
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QUESTION 271
Drag and Drop Question
You create a Windows Communication Foundation (WCF) service.
The service uses a federated security architecture.
The architecture consists of the following components:
– Order service
– Store security token service (STS)
– Home security token service (STS)
– Order client application
The Order service includes the following markup:
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QUESTION 261
You are developing a custom service host for a Windows Communication Foundation (WCF) service.
The service host is named MovieServiceHost.
You need to deploy the service with the custom service host in Microsoft Internet Information Services (IIS) 7.0.
What should you do?
A. Create a factory for the custom service host. Name the factory MovieServiceHostFactory.
In the web.config file, add the following attribute to the <add> element within the
<serviceActivations> element, factory=”HovieServiceHostFactory”
B. Decorate the custom service host class with the following line.
<System.ServiceModel.Activation.ServiceActivationBuildProvider()>
C. Make sure that the service class has a default constructor.
Add a public read-only property with the name ServiceHost that returns an instance of the
MovieServiceHost class.
D. Create a factory for the custom service host. Name the factory MovieServiceHostFactory.
In the .svc file, add the following line.
<%3 ServiceHost Service=”MovieServiceHostFactory” Language=”VB”%>
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QUESTION 251
You are hosting a Windows Communication Foundation (WCF) service under Microsoft Interent Information Services (IIS) 7.0.
You have set up a web site in IIS Manager.
The physical path is c:\wwwroot\Calendar.
There is a Calendar.svc file in the c:\wwwroot\Calendar folder.
It contains the following directive:
<% @ServiceHost Language=”C#” Debug=”true” Service=”Calendar.Calendar” CodeBehind=”CalendarSvc.cs” %>
The CalendarSvc.cs file contains the source for the Calendar class in the Calendar namespace.
You compile this code into the Calendar.dll file.
You need to deploy your service to the web site.
What should you do?
A. Copy the Calendar.dll file to the c:\wwwroot\Calendar\code folder
B. Copy the Calendar.dll file to the c:\wwwroot\Calendar\bin folder
C. Copy the Calendar.svc.cs file to the c:\wwwroot\Calendar\bin folder
D. Copy the Calendar.svc.cs file to the c:\wwwroot\Calendar\code folder
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QUESTION 241
Four Windows Communication Foundation (WCF) services are hosted in Microsoft Internet Information Services (IIS).
No behavior configuration exists in the web.config fiIe.
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 maxConncurentCalls=”50″
maxConcurrentSessions=”25″ />
</behavior>
</serviceBehaviors>
</behaviors>
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QUESTION 201
A Windows Communication Foundation (WCF) service is deployed with netTcpBinding.
This service uses a duplex message exchange pattern.
You are developing the next version of the WCF service.
You discover that your company’s hardware load balancer performs correctly only for WCF services that use HTTP.
You need to ensure that your service works with the load balancer.
What should you do?
A. Create a custom binding that has the compositeDuplex. textMessageEncoding, and wsHttpTransport binding elements in this order.
B. Use basicHttpBinding.
C. Create a custom binding that has the compositeDuplex, textMessageEncoding, and namedPipeTransport binding elements in this order.
D. Use wsHttpBinding.
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QUESTION 221
You develop a Window Communication Foundation (WCF) service.
You have the following requirements:
– Create a data contract to pass data between client applications and the service.
– Create the data that is restricted and cannot pass between client applications and the service.
You need to implement the restricted data members.
Which member access modifier should you use?
A. Protected
B. Public
C. Shared
D. Private
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QUESTION 211
You are debugging a Windows Communication Foundation (WCF) service.
The service uses signed and encrypted messages.
You need to configure logging so that you can read the contents of the messages.
What should you do?
A. Set maxSizeMessagesToLog to 10
B. Set logMessageAtServiceLevel to true.
C. Set maxMessagesToLog to 10.
D. Set logMessageAtTransportLevel to true.
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QUESTION 191
You are creating a Windows Communication Foundation (WCF) service.
You need to ensure that the service is compatible with ASP.NET to make use of the session state.
Which binding should you use?
A. NetTcpContextBinding
B. BasicHttpContextBinding
C. NetTcpBinding
D. NetMsmqBinding
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QUESTION 181
A self-hosted Windows Communication Foundation (WCF) service uses a secure HTTP binding with a custom principal permission mode.
The binding requires users to provide their Windows logon credentials.
You need to retrieve the identity of the caller.
What are two possible properties you can use to achieve this goal? (Each correct answer presents a complete solution Choose two)
A. Thread.CurrentPrincipal.Identity.Name
B. HttpContext.Current.User.Identity.Name
C. ServiceSecurityContext.Current.PrimaryIdentity.Name
D. OperationContext.Current.ServiceSecurityContext.PrimaryIdentity.Name
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QUESTION 171
Drag and Drop Question
You use Visual Studio to develop a Windows Communication Foundation (WCF) service.
The service is not hosted.
You cannot use the WcfTestClient.exe tool to test the service.
You need to test the service from a separate Visual Studio solution that contains a simple console application.
Which four actions should you perform in sequence? (To answer, move the appropriate four actions from the list of actions to the answer area and arrange them in the correct order.)
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QUESTION 161
You are developing a Windows Communication Foundation (WCF) service.
You must record all available information for the first 1,000 messages processed, even if they are malformed.
You need to configure the message logging section of the configuration file.
Which configuration segment should you use?
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