Microsoft MCTS 070-513

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Simulation test system

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

1. You are developing a Windows Communication Foundation (WCF) service that is used to check the status of orders placed by customers. The following code segment is part of your service. (Line numbers are included for reference only.)

You need to ensure that the service always listens at net.pipe://SupplyChainServer/Pipe. What should you do?

A) Option C
B) Option B
C) Option A
D) Option D

2. 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;
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(typeof(DataAccessService));
B) host = new ServiceHost("MyApplication.DataAccessService");
C) host = new ServiceHost("MyApplication.IDataAccess");
D) host = new ServiceHost(typeof(IDataAccess));

3. Your company has an existing Windows Communication Foundation (WCF) service. The following code segment is part of the service. (Line numbers are included for reference only.)

You need to ensure that AJAX client applications can access the service. Which code segment should you insert at line 02?

A) Option C
B) Option B
C) Option A
D) Option D

4. You are creating an application that consumes a Windows Communication Foundation
(WCF) service. The service implements the IService contract. The client application contains the CallbackHandler class, which implements IServiceCallback.
You need to ensure that a client proxy is created that can communicate with the service over a duplex channel.
Which code segment should you use?

A) Dim handler = New CallbackHandler()
Dim clientFactory =
New DuplexChannelFactory( Of IService)(
GetType(CallbackHandler),
New USDualHttpBindingO )
Dim client = clientFactory.CreateChannel(
New InstanceContext (handler) ,
New EndpointAddress ("") )
B) Dim handler = New CallbackHandler()
Dim clientFactory =
New DuplexChannelFactory(Of IService)( New WSHttpBinding())
Dim client = clientFactory.CreateChannel(
New InstanceContext(handler),
New EndpointAddress (""))
C) Dim handler = New CallbackHandler()
Dim clientFactory =
New DuplexChannelFactory(Of IService)(
New WSHttpContextBinding() )
Dim client = clientFactory.CreateChannel( New InstanceContext(handler),
New EndpointAddress (""))
D) Dim handler - New CallbackHandler()
Dim clientFactory =
New DuplexChannelFactory(Of IService)(
GetType(CallbackHandler),
New HSDualHttpBindingO) Dim client = clientFactory.CreateChannel( New
EndpointAddress ("") )
E) Explanation:
QUESTIO NO: 98 You develop a Windows Communication Foundation (WCF) service. It is used exclusively as an intranet application and is currently unsecured.
You need to ensure that the service meets the following requirements:
---
The service now must be exposed as an Internet application. The service must be secured at the transport level. Impersonation and delegation cannot be enabled.
What should you use?
A. basicHttpBinding and HTTP
B. basicHttpBinding and Kerberos
C. wsHttpBinding and Kerberos
D. wsHttpBinding and HTTPS

5. You are developing a Windows Service. The Windows Service will host a Windows Communication Foundation (WCF) service.
The Windows Service class will inherit from ServiceBase.
You need to ensure that the WCF service starts when the Windows Service is restarted.
What should you do in the Windows Service class?

A) Override the OnStart method and create and open a new ServiceHost.
Override the OnStop method and close the ServiceHost.
B) Create a public method named Main.
Create a new ServiceHost in the Main method.
Override the OnShutdown method and close the ServiceHost.
C) Override the OnPowerEvent method and open a new ServiceHost.
Override the OnShutdown method and close the ServiceHost.
D) Override the OnContinue method and open a new ServiceHost.
Override the OnStop method and close the ServiceHost.

Solutions: