You are developing a client application that consumes a Windows Communication
Foundation (WCF) service. The operation contract is as follows.
<OperationContract()>
<FaultContract(GetType(SalesFault))>
Function GetSales(ByVal saieId As String) As String
The service configuration file contains the following line in the serviceBehaviors section.
<behovior>
oerviceDebug includeExceptionDetoilInFaults-"True'V>
</behavior>
A divide-by-zero exception is not being handled by the service.
You need to ensure that the exception is caught in the client application.
Which type of exception should the client catch?

• A. FaultException(Of SalesFault)
• B. TimeoutException
• C. FaultException
• D. DivideByZeroException

A Windows Communication Foundation (WCF) service listens for messages at net
tcpilwwwcontoso.comMMyService.
It has a logical address at http/Iwwwcontosocorn)MyService
The configuration for the WCF client is as follows
<endpoint addressrhTttpllwwwcontosocom/MyService"
bindinge"netTc pBinding"
bindingConfiguraton-NetTc pBinding_lMyService
contract="ServiceReference 1. IMyServce'
name='NetTcpBinding_lllyService"/>v
The generated configuration does not provide enough information for the client to communicate with the server.
You need to update the client so that it can communicate with the server what should you do

• A. After instantiating the client and before invoking any service operation, add this line of code. client. Endpoint BehaviorsAdd( new Client ViaBehavior( new Uhcnet.tc pifwww.contoso. comiIMyService)))
• B. After instantiating the client and before invoking any service operation, add this line of code client Endpoint BehaviorsAdd( new EndpointDiscoveryBehawior0{ Enabled true });
• C. In the client configuration. Change the value of the address attribute to nettcp:/Iwwwcontosocom/MyService
• D. In the client configuration, change the value of the address attribute to net.tcp:Ilwwwcontosocom/MyServicellisten=http:/Iwwwcontosocom/MyService.

A Windows Communication Foundation (WCF) service implements a contract with one-way and requestreply operations.
The service is exposed over a TCP transport.
Clients use a router to communicate with the service. The router is implemented as follows. (Line numbers are included for reference only.)
01 ServiceHost host = new ServiceHost(typeof(RoutingService));
02 host AddServiceEndpoint(
03 typeof(lSimplexDatagramRouter),
04 new NetTcpBinding0, "net.tcp:/flocalhostlRouter"
05);
06 List <ServiceEndpoints lep new List <ServiceEndpoint>0;t
07 lep.Add(
08 new ServiceEndpoint(
09 ContractDescription.GetContract(
10 typeof(lSimplexDatagramRouter)
11),
12 new NetTcpBinding0,
13 new EndpointAddress|'nettcp://localhost: 8080/Logger")
14)
15);
16 RoutingConfiguration rc new RoutingConfigurationO;
17 FilterTable.Add(new MatchAilMessageFilterO, lep);
18 host. Description. Behaviors. Add(new RoutingBehavior(rc));
Request-reply operations are failing.
You need to ensure that the router can handle one-way and request-reply operations.
What should you do?

• A. Change line 03 as follows. typeof(l RequestReplyRouter),
• B. Change line 10 as follows. typeof(lRequestReplyRouter)
• C. Change line 10 as follows. typeof(lDuplexSessionRouter)
• D. Change line 03 as follows. typeof(lDuplexSessionRouter),

A Windows Communication Foundation (WCF) service has a callback contract. You are developing a client application that will call this service.
You must ensure that the client application can interact with the WCF service.
What should you do?

• A. On the client, use GetCallbackChannel<T>.
• B. On the client, create a proxy derived from DuplexClientBase<TChannel>.
• C. On the OperationContractAttribute, set the ReplyAction property value to the endpoint address of the client.
• D. On the OperationContractAttribute, set the AsyncPattern property value to true.

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You are maintaining a Windows Communication Foundation (WCF) service that uses a custom UserNamePassword class to authenticate clients. The service certificate is hosted in the deployment server store for trusted root certificate authorities and has a Subject value of TaxServiceKey. Other service certificates hosted on the server also use TaxServiceKey as a Subject value.
You need to ensure that the service identifies itself with a certificate whose subject name and distinguished names are TaxServiceKey.
Which code segment should you use?

• A. HostInstance.Credentials.ServiceCertificate.SetCertificate
  (StoreLocation.LocalMachine, StoreName.My,
  X509FindType.FindBySubjectName,
  "CN=TaxServiceKey")
• B. HostInstance.Credentials.ServiceCertificate.SetCertificate
  (StoreLocation.LocalMachine, StoreName.My,
  X509FindType.FindBySubjectDistinguishedName,
  "CN=TaxServiceKey")
• C. HostInstance.Credentials.ServiceCertificate.SetCertificate
  (StoreLocation.LocalMachine, StoreName.AuthRoot,
  X509FindType.FindBySubjectName, "CN=TaxServiceKey")
• D. HostInstance.Credentials.ServiceCertificate.SetCertificate
  (StoreLocation.LocalMachine, StoreName.Root,
  X509FindType.FindBySubjectDistinguishedName,
  "CN=TaxServiceKey")