Microsoft 70-513 : TS: Windows Communication Foundation velopment with Microsoft .NET Framework 4

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Microsoft 70-513 Exam Syllabus Topics:

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

1. You are consuming a Windows Communication Foundation (WCF) service. The service interface is defined as follows.
<DataContract(Namespace:="")> Public Class Item End Class ServiceContract (Namespace: ="") > Public Interface ICatalog <OperationContract()> <WebInvoke(Method:="POST*', UriTemplate:="/Item") > Function Updateltem(ByVal item As Item) As Item
End Interface
The client application receives a WebResponse named response with the response from the service.
You need to deserialize this response into a strongly typed object representing the return value of the method.
Which code segment should you use?

A) Dim f As BinaryFormatter = New BinaryFormatter()
Dim item As Item =
DirectCast(f-Deserialize(response.GetResponsestream()), Item)
B) Dim s As DataContractSerializer =
New DataContractSerializer(GetType(Item))
Dim item As Item -
DirectCast(s.ReadObject(response.GetResponsestrearn()), Item)
C) Dim s As DataContractJsonSerlalizer =
New DataContractJsonSerlalizer(
GetType(Item))
Dim item As Item =
DirectCast(s.ReadObject(
response.GetResponsestrearn()), Item)
D) Dim r As XmlDictionaryReader =
JsonReaderUriterFactory.CreateJsonReader(
response.GetResponseStream(),
XmlDictionaryReaderQuotas.Max)
Dim s As DataContractSerializer =
New DataContractSerializer(GetType(Item)
Dim item As Item = DirectCast(s.ReadObject(r), Item)

2. 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, create a new instance of WindowsClaimSet. Use the FindClaims method to locate a claimType named Role with a right named Manager.
B) In the method body, check the Rights.PossessProperty property to see if it contains Manager.
C) Add a PrincipalPermission attribute to the method and set the Roles property to Manager.
D) Add a SecurityPermission attribute to the method and set the SecurityAction to Demand.

3. A Windows Communication Foixdation (WCF) solution uses the following contracts (Line numbers are included for reference only)
01 eServiceContract(Callback contract: GetType(lNameService))> 02Putlic Interface I(IeetingService 03 04 <OperationContractO> 05Function GetMessage() As Stnng 06 07End Interface 08 09 <ServiceContractO> 1 OPublic Interface INameService 11 12 <OperationContractO> 1 3Function GetName() As String 14 15 End Interface
The code that implements the KleetingService interface is as follows.
20Public Class GretingService 21Impements lGreaingService 22 23Public Function GetMessage0As String
24lmpements IGredingService. GetMessage
25
26Dim clientChann As INameService =
27OperationContet. Current.
28GetCallbackChamel(Of INameService)()
29Dim clientName As String = clientChannelGetName()
30 Retumn String Format("Hello {O)", clientName)
31
32End Function
33hnd Class
The service is self-hosted The hosting code is as follows.
35Dim host As SeniceHost =
36New ServiceHost(GetType(GrstingService))?
37Dim binding As NetTcpBinding =
38New NetTcpBinding(Sec urityMode. None)
39hostAddServiceEndpoint('Myapplication lGreetingService".
4Obincng, net.tcp:Ilocalhost: 12345W)
41 HotOpen()l
The code that implements the INameService interface is as follows.
42Class NameService
43lmpements INameService
44
45Dim name As String
46
47Public Sub NameService(ByV name As String)
48Me.reme = name
49End Sub
50
51 Public Function GetName() As String
52lmpements INameService. GeName
53
54Reti.rn name
55End Function
56End 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) Add the following attribute to the GreetingSenAce class, before line 20.
<ServiceBehavior(Conc
urrencyMode: zConctrencyMode Reentrant)>
B) Add the following attribute to the GreetingSence class, before line 20.
<ServiceBehavior(ConcurrencyMode: ConcurrencyMode. Multiple)>
C) Change the service contract definition in line 01 as follows.
<ServiceContract(CallbackContract: sGetType(lNameService), SessionMode
=SessknMode Required)>
D) Add the following attribute to the NameService class, before line 42.
<ServiceBehavior(ConcurrencyMode ConcisrencyMode. Reentrant)>

4. A Windows Communication Foundation (WCF) solution uses the following contracts. (Line numbers are included for reference only.)
01 [ServiceContract(CallbackContract = typeof(INameService))]
02 public interface IGreetingService
03 {
04 [OperationContract]
05 string GetMessage();
06 }
08 [ServiceContract]
09 public interface INameService
10 {
11 [OperationContract]
12 string GetName();
13 }
When the client calls GetMessage on the service interface, the service calls GetName on the client callback. In the client, the class NameService implements the callback contract.
The client channel is created as follows.
22 In stanceContext callbackContext =
new InstanceContext(new NameService("client"));
25 DuplexChannelFactory<IGreetingService> factory =
new DuplexChannelFactory<IGreetingService>(
typeof(NameService), binding, address);
26 IGreetingService greetingService = factory.CreateChannel();
You need to ensure that the service callback is processed by the instance of NameService.
What are two possible ways to achieve this goal? (Each correct answer presents a complete solution. Choose two.)

A) Add the following code segment after line 26. callbackContext.IncomingChannels.Add((IDuplexChannel)greetingService);
B) Change line 25 to the following code segment. DuplexChannelFactory<IGreetingService> factory = new DuplexChannelFactory<IGreetingService>( callbackContext, binding, address);
C) Change line 26 to the following code segment. IGreetingService greetingService = factory.CreateChannel(callbackContext);
D) Add the following code segment after line 26. callbackContext.OutgoingChannels.Add((IDuplexChannel)greetingService);

5. 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>
Sub PostData(Byval data As Order) You need to modify PostData so that it can receive any SOAP message.
Which code segment should you use?

A) OperationContract(lsOneway: zTrue, Action:z'-', ReplyAction: z"-')> Sub PostData(ByVal data As BodyWriter)
B) <OperationContract(lsOneWay True, Action ReplyAction '-)> Sub PostData(ByVal data As Order)
C) <OperationContract0> Sub PostData(ByVal data As Message)
D) <OperationContract> Sub PostData(Byval data As BodyWriter)

Solutions: