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Microsoft 70-513 Exam Syllabus Topics:

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

1. A Windows Communication Foundation (WCF) service implements the following contract. (Line numbers are included for reference only.)
01 <ServiceContract()>
02 Public Interface IDataAccessService
03
04 <OperationContract()>
05 Sub PutMessage(ByVal message As String)
06
07 <OperationContract()>
08 <FaultContract(GetType(TimeoutFaultException))>
09 <FaultContract(GetType(FaultException))>
10 Function SearchMessages(ByVal search As String) As String ()
11
12 End Interface
The implementation of the SearchMessages method throws TimeoutFaultException exceptions for database timeouts. The implementation of the SearchMessages method also throws an Exception for any other issue it encounters while processing the request. These exceptions are received on the client side as generic FaultException exceptions.
You need to implement the error handling code for SearchMessages and create a new channel on the client only if the channel faults.
What should you do?

A) Catch both TimeoutFaultException and FaultException. Create a new channel in both cases.
B) Catch and handle both TimeoutFaultException and FaultException.
C) Catch and handle FaultException. Catch TimeoutFaultException and create a new channel.
D) Catch and handle TimeoutFaultException. Catch FaultException and create a new channel.

2. A Windows Communication Foundation (WCF) client communicates with a service. You created the client proxy by using Add Service Reference in Microsoft Visual Studio.
You need to ensure that the client accepts responses of up to 5 MB in size.
What should you change in the configuration file'?

A) the value of the maxReceivedMessageSize attribute to 5242880
B) the value of the maxBufferPoolSize attribute to 5242880
C) the value of the maxBufferSize attribute to 5242880
D) the value of the maxBytesPerRead attribute to 5242880

3. You are integrating a Windows Communication Foundation (WCF) service within an enterprise-wide Service
Oriented Architecture (SQA)
Your service has the following service contract.
[ServiceContract]
public class CreditCardConfirmationService { [OperationContracti public Boolean ConfirmCreditCard(string cc Number double orderAmount, nmt orderNumber) { )
)
You need to allow the code in the ConfirmCreditCard method to participate automatically in existing transactions. If there is no existing transaction, a new transaction must be created automatically.
What should you do?

A) Add an [OperationBehavior(TransactionScopeRequired true)] attribute to the ConfirmCreditCard method.
B) Inside the ConfirmCreditCard method, surround the code that must participate in the transaction with a using(new CommittableTransactionO) block.
C) Add an [OperationBehavior(TransactionAutoComplete true)J attribute to the ConfirmCreditCard method.
D) Inside the ConfirmCreditCard method, surround the code that must participate in the transaction with a using(new TransactionScopeO) block

4. 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) Change the service contract definition in line 01 as follows.
<ServiceContract(CallbackContract: sGetType(lNameService), SessionMode
=SessknMode Required)>
B) Add the following attribute to the NameService class, before line 42.
<ServiceBehavior(ConcurrencyMode ConcisrencyMode. Reentrant)>
C) Add the following attribute to the GreetingSence class, before line 20.
<ServiceBehavior(ConcurrencyMode: ConcurrencyMode. Multiple)>
D) Add the following attribute to the GreetingSenAce class, before line 20.
<ServiceBehavior(Conc
urrencyMode: zConctrencyMode Reentrant)>

5. 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 s As DataContractJsonSerlalizer =
New DataContractJsonSerlalizer(
GetType(Item))
Dim item As Item =
DirectCast(s.ReadObject(
response.GetResponsestrearn()), Item)
B) 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)
C) Dim f As BinaryFormatter = New BinaryFormatter()
Dim item As Item =
DirectCast(f-Deserialize(response.GetResponsestream()), Item)
D) Dim s As DataContractSerializer =
New DataContractSerializer(GetType(Item))
Dim item As Item -
DirectCast(s.ReadObject(response.GetResponsestrearn()), Item)

Solutions: