You are developing a Windows Communication Foundation (WCF) service to provide shopping cart support. ASP.NET compatibility mode is not enabled.
The shopping cart information must be retained across user visits to the store until the user explicitly empties the cart or submits the cart contents to order.
You need to implement the service as a DurableService.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

• A. Use wsHttpContextBinding for both the client application and the service.
• B. Create the persistence provider database and configure the persistenceProvider element of the service behavior to point to that database.
• C. In the method to add an item to the shopping cart, serialize the shopping cart contents after adding the current item and storing it in a Session variable.
• D. Use basicHttpBinding for both the client application and the service.

You are developing a Windows Communication Foundation (WCF) service to provide an in-memory cache. The following code is part of your solution. (Line numbers are included for reference only.)
01 02 Public Interface IlnMemoryCacheService 03 04 <OperationContract()> 05 Function GetCachedItem( ByVal key As String) As String 06 07 <OperationContract() > 08 Sub CacheItem( ByVal key As String, ByVal item As String) 09 10 End Interface 11 12 <ServiceBehavior( InstanceContextMode:=InstanceContextHode.Single)> 13 Public Class CacheService 14 Implements IlnHemoryCacheService 15 16 Dim cache As Hashtatale - New Hashtable)> 17 18 Public Function GetCachedItem( ByVal key As String) As String mplements IInHemoryCacheService.GetCachedltem 19 20 Return cache (key) .ToStrlng() 21 22 End Function
23 24 Public Sub Cacheltem( ByVal key As String, ByVal item As String) Implements ilnMemoryCacheService.Cacheltem Then 25 26 If (cache.Contains(key) 27 cache.Remove(key) 28 End If 29 30 cache.Add(key, item) 31 32 End Sub
34 End Class
Users report that the cache is getting updated with cache changes of other users. You need to ensure that each user's cache is maintained and isolated from other users.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

• A. At line 12, replace InstanceContextHode.Single with InstanceContextHode.PerSession.
• B. Insert the following code at line 01. <ServiceContract(SessionHode:=SessionHode.Required)>
• C. Insert the following code at line 01. <ServiceContract(SessionMode:=SessionHode.NotAllowed)>
• D. At line 12, replace InstanceContextHode.Single with InstanceContextHode.PerCall.

DRAG DROP
You develop a Windows Communication Foundation (WCF) service that is hosted within a console application. The service implements the IRegistrationService interface in a class named RegistrationService. The service uses the following endpoint URL:
http://localhost:8080/registrationservice/basic
You need to configure the console application to host the service.
How should you complete the relevant markup? (To answer, drag the appropriate markup segment to the correct location in the answer area. Each 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.)

A Windows Communication Foundation (WCF) client configuration file contains the following XML segment in the system.serviceModel element.
<client>
<endpoint address=" net.tcp://server/ContosoService "
binding=" netTcpBinding "
contract=" Contoso. IContosoService "
name=" netTcp " / >
<endpoint address=" net.pipe://localhost/ContosoService "
binding=" netNamedPipeBinding "
contract=" Contoso. IContosoService "
name=" netPipe " />
</client>
You need to create a channel factory that can send messages to the endpoint listening at net.pipe://localhost/ContosoService.
Which code segment should you use

• A. ChannelFactory < Contoso. IContosoService > factory =
  new ChannelFactory < Contoso. IContosoService >(" Contoso. IContosoService ");
• B. ChannelFactory < Contoso. IContosoService > factory =
  new ChannelFactory < Contoso. IContosoService >(
  " net.pipe://localhost/ContosoService ");
• C. ChannelFactory < Contoso. IContosoService > factory =
  new ChannelFactory < Contoso. IContosoService >(" netNamedPipeBinding ");
• D. ChannelFactory < Contoso. IContosoService > factory =
  new ChannelFactory < Contoso. IContosoService >(" netPipe ");