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

1. You develop a Windows Communication Foundation (WCF) service that interacts with Microsoft Message Queuing (MSMQ).
The service requires sessions. You need to create a custom binding that enables messages sent to the queue to be viewed when you are using a listener tool.
Which binding elements should you use?

A) textMessageEncoding and msmqIntegrationTransport in this order
B) textMessageEncoding and msmqTransport in this order
C) msmqTransport and textMessageEncoding in this order
D) msmqIntegrationTransport and textMessageEncoding in this order

2. You have an existing Windows Communication Foundation (WCF) service.
You need to ensure that other services are notified when the service is started.
What should you do?

A) Add a service behavior with the following element.
<serviceDiscovery>
<announcementEndpoints>
<endpoint kind="udpAnnouncementEndpoint" />
</announcementEndpoints>
</serviceDiscovery>
B) Add the following standard endpoint to the service.
<endpoint name="udpDiscoveryEndpoint"
kind="udpAnnouncementEndpoint" />
C) Add a service behavior with the following element.
<serviceDiscovery>
<announcementEndpoints>
<endpoint kind="udpDiscoveryEndpoint" />
</announcementEndpoints>
</serviceDiscovery>
D) Add the following standard endpoint to the service.
<endpoint name="udpAnnouncementEndpoint"
kind="udpDiscoveryEndpoint" />

3. A Windows Communication Foundation (WCF) solution uses the following contract.
[ServiceContract(SessionMode SessionModeAllowed)] public interface IMyService {
[OperaionContractQsTerminating false) void lnitialize0;
[OperaionContractQslnitiating false)] Void DoSomethingO;
[OperaionContractQsTerminating true)J void TerminateO;
}
You need to change this interface so that:
'Initialize is allowed to be called any time before Terminate is called
"DoSomething is allowed to be called only after Initialize is called, and n allowed to be
called after Terminate is called "Terminate will be lowed 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 OperationContract attribute of the Initialize operation to the following. OperationContract(initiating = true, IsTerminating = false)
B) Change the ServiceContract attribute of the IMyService interface to the following. ServiceContract(SessionMode = SessionMode Required)
C) Change the OperationContract attribute of the Terminate operation to the following OperationContract(klnitiating = fase, IsTerminating = true)
D) Change the ServiceContract attribute of the IMyService interface to the following ServiceContract(SessionMode SessionMode Allowed)

4. You are creating a Windows Communication Foundation (WCF) service that accepts messages from clients when they are started. The message is
defined as follows.
<MessageContract()>
Public Class Agent
Public Property CodeName As String
Public Property SecretHandshake As String
End Class
You have the following requirements:
The CodeName property must be sent in clear text. The service must be able to verify that the property value was not changed after being sent by the client.
The SecretHandshake property must not be sent in clear text and must be readable by the service.
What should you do?

A) Add an XmlText attribute to the CodeName property and set the DataType property to Signed. Add a PasswordPropertyText attribute to the SecretHandshake property and set its value to True.
B) Add an ImmutableObject attribute to the CodeName property and set its value property to True. Add a Browsable attribute to the SecretHandshake property and set its value to False.
C) Add a DataProtectionPermission attribute to the each property and set the ProtectData property to True.
D) Add a MessageBodyMember attribute to the CodeName property and set the ProtectionLevel to Sign. Add a MessageBodyMember attribute to the SecretHandshake property and set the ProtectionLevel to EncryptAndSign.

5. A Windows Communication Foundation (WCF) solution provides a session-based counter.
The service is self-hosted. The hosting code is as follows.
Dim host As ServiceHost = New ServiceHost(GetType(CounterService))
Dim bnding As NetTcpBinding =
New NetTcpBinding(SecurityMode.None)
host.AddServiceEndpoint("MyApplication. ICounterService",
binding, "net.tcp://localhost:23456")
host. Open()
This service is currently exposed over TCP, but needs to be exposed to external clients over HTTP.
Therefore, a new service endpoint is created with the following code.
host.AddServiceEndpoint(''MyApplication. lCounterService",
binding2, "http:/!localhost:12345'
You need to complete the implementation and ensure that the session-based counter will perform over HTTP as it does over TCP.
What should you do?

A) Define binding2 as follows.
Dim binding2 As BasicHttpBinding = New BasicHttpBinding(BasicHttpSecurityMode.None)
Enable cookies for
binding2.
binding2.AllowCookies = True
B) Define binding2 as follows.
Dim binding2 As BasicHttpBinding = New BasicHttpBinding(BasicHttpSecurityMode. None)
add the following behavior to the service implementation.
<ServiceBehavior(lnstanceContextMode:
1nstanceContextMode.Single)>
C) Define binding2 as follows.
Dim binding2 As WSHttpBinding = - New WSHttpBinding(SecurityMode.None) Add the
following behavior to the service implementation. <ServceBehavior(lnstanceContextMode:
1nstanceContextMode.PerSession)s
D) Define binding2 as follows.
Dim binding2 As WS2007HttpBinding =
New WS200lHttpBinding(SecurityMode. None) Configure binding2 as follows.
binding2.ReliableSession.Enabled = True

Solutions: