070-513 Real Exam Prep DEMO

Question 2: 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(IRequestReplyRouter),
B.Change line 03 as follows:
typeof(IDuplexSessionRouter),
C.Change line 10 as follows:
typeof(IRequestReplyRouter)
D.Change line 10 as follows:
typeof(IDuplexSessionRouter)
Correct Answer: B
12.You are modifying an existing Windows Communication Foundation (WCF) service that is defined as
follows:
[ServiceContract]
public interface IMessageProcessor
{
[OperationContract]
void ProcessMessages();
}
public class MessageProcessor: IMessageProcessor
{
public void ProcessMessage();
SubmitOrder();
}
SubmitOrder makes a call to another service. The ProcessMessage method does not perform as
expected under a heavy load.
You need to enable processing of multiple messages. New messages must only be processed when the
ProcessMessage method is not processing requests,
or when it is waiting for calls to SubmitOrder to return.
Which attribute should you apply to the MessageProcessor class?
A.CallbackBehavior(ConcurrencyMode=ConcurencyMode.Reentrant)
B.CallbackBehavior(ConcurrencyMode=ConcurrencyMode.Multiple)
C.ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Reentrant)
D.ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Multiple)
Correct Answer: C
13.A Windows Communication Foundation (WCF) service listens for messages at
net.tcp://www.contoso.com/MyService.
It has a logical address at http://www.contoso.com/MyService. The configuration for the WCF client is as
follows:
<endpoint address="http://www.contoso.com/MyService"
binding="netTcpBinding"
bindingConfiguraton="NetTcpBinding_IMyService"
contract="ServiceReference1.IMyService"
name="NetTcpBinding_IMyService"/>
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.In the client configuration, change the value of the address attribute to
net.tcp://www.contoso.com/MyService
B.In the client configuration, change the value of the address attribute to
net.tcp://www.contoso.com/MyService listen=http://www.contoso.com/MyService.
C.After instantiating the client and before invoking any service operation, add this line of code.
EndpointBehaviors.Add(new EndpointDiscoveryBehavior(){ Enabled = true });
D.After instantiating the client and before invoking any service operation, add this line of code.
client.Endpoint.Behaviors.Add(new ClientViaBehavior(new
Uri("net.tcp://www.contoso.com/IMyService")));
Correct Answer: D
14.A Windows Communication Foundation (WCF) service is self-hosted in a console application.
The service implements the IDataAccess contract, which is defined in the MyApplication namespace.
The service is implemented in a class named DataAccessService which implements the IDataAccess
interface and also is defined in the MyApplication namespace. The hosting code is as follows.
(Line numbers are included for reference only.)
01 static void Main(string[] args)
02 {
03 ServiceHost host;
04 ...
05 host.Open();
06 Console.ReadLine();
07 host.Close();
08 }
You need to create a ServiceHost instance and assign it to the host variable. You also need to instantiate
the service host.
Which line of code should you insert at line 04?
A.host = new ServiceHost("MyApplication.DataAccessService");
B.host = new ServiceHost("MyApplication.DataAccess");
C.host = new ServiceHost(typeof(IDataAccess));
D.host = new ServiceHost(typeof(DataAccessService));
Correct Answer: D
15.A Windows Communication Foundation (WCF) service implements the following contract.
[ServiceContract]
public interface IHelloService
{
[OperationContract(WebGet(UriTemplate="hello?name={name}"))]
string SayHello(string name);
}
The implementation is as follows:
public class HelloService: IHelloService
{
public string SayHello(string name)
{
return "Hello " + name;
}
}
The service is self-hosted, and the hosting code is as follows:
WebServiceHost svcHost = CreateHost();
svcHost.Open();
Console.ReadLine();
svcHost.Close();
You need to implement CreateHost so that the service has a single endpoint hosted at
http://localhost:8000/HelloService.
Which code segment should you use?
A.WebServiceHost svcHost = new WebServiceHost(typeof(HelloService));
svcHost.AddServiceEndpoint(typeof(IHelloService),
new WebHttpBinding(WebHttpSecurityMode.None),
"http://localhost:8000/HelloService");
return svcHost;
B.Uri baseAddress = new Uri("http://localhost:8000");
WebServiceHost svcHost = new WebServiceHost(typeof(HelloService), baseAddress);
svcHost.AddServiceEndpoint(typeof(IHelloService),
new WebHttpBinding(WebHttpSecurityMode.None),
"HelloService");
return svcHost;
C.WebServiceHost svcHost = new WebServiceHost(new HelloService());
svcHost.AddServiceEndpoint(typeof(IHelloService),
new WebHttpBinding(WebHttpSecurityMode.None),
"http://localhost:8000/HelloService");
retumn svcHost
D.Uri baseAddress = new Uri("http://localhost:8000/");
WebServiceHost svcHost = new WebServiceHost(new HelloService(), baseAddress);
svcHost.AddServiceEndpoint(typeof(IHelloService),
new WebHttpBinding(WebHttpSecurityMode.None),
"HelloService");
retumn svcHost;
Correct Answer: B
16.You are building a client for a Windows Communication Foundation (WCF) service.
You need to create a proxy to consume this service. Which class should you use?
A.ChannelFactory<TChannel>
B.ServiceHost
C.ClientRuntime
D.CommunicationObject
Correct Answer: A
17.You are working with a Windows Communication Foundation (WCF) client application that has a
generated proxy named SampleServiceProxy.
When the client application is executing, in line 04 of the following code, the channel faults (Line numbers
are included for reference only.)
01 SampleServiceProxy proxy = new SampleServiceProxy();
02 try
03 {
04 proxy.ProcessInvoice(invoice);
05 }
06 catch
07 {
08 if(proxy.State == CommunicationState.Faulted)
09 {
10 ...
11 }
12 }
13 proxy.UpdateCustomer(customer);
You need to return proxy to a state in which it can successfully execute the call in line 13.
Which code segment should you use at line 10?
A.proxy.Close();
B.proxy = new SampleServiceProxy();
C.proxy.Abort();
D.proxy.Open();
Correct Answer: B
18.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 OperationContractAttribute, set the AsyncPattern property value to true.
B.On the OperationContractAttribute, set the ReplyAction property value to the endpoint address of the
client.
C.On the client, create a proxy derived from DuplexClientBase<TChannel>.
D.On the client, use GetCallbackChannel<T>.
Correct Answer: C