Microsoft UPG:Transition MCPD.NET Frmwrk 3.5 Web Dev to 4 Web Dev Sample Questions:

1. 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) CommunicationObject
C) ClientRuntime
D) ServiceHost

2. You are creating a Windows Communication Foundation (WCF) service to process orders.
The data contract for the order is defined as follows.
[DataContract]
public class Order {
[DataMember] public string CardHolderName { get; set; [DataMember]
public string CreditCardNumber { get; set; }
}
You have the following requirements:
"Enable the transmission of the contents of Order from the clients to the service.
"Ensure that the contents of CreditCardNumber are not sent across the network in clear text.
"Ensure that the contents of CreditCardNumber are accessible by the service to process the order.
You need to implement the service to meet these requirements.
What should you do?

A) Change the data type of CreditCardNumber from string to SecureString.
B) Add a DataProtectionPermission attribute to the CreditCardNumber property and set the ProtectData property to true.
C) Convert the DataContract to a MessageContract and set the ProtectionLevel property to SignAndEncrypt.
D) Implement the CreditCardNumber property getter and setter. In the setter, run the value of the CreditCardNumber through the MD5CryptoServiceProvider class TransformBlock method.

3. A Windows Communication Foundation (WCF) service has the following contract.
[ServiceContract(Namespace="http://contoso.com")]
public interface IShipping
{ [OperationContract] string DoWork(int id);
}
This is one of several service contracts hosted by your application. All endpoints use SOAP 1.2 bindings
with WS-Addressing 1.0. The System.ServiceModel.MessageLogging trace source in the system.
diagnostics configuration section is configured with one listener.
You need to make sure that only the messages that are returned from the DoWork operation are logged.
Which XML segment should you add to the system.serviceModel/diagnostics/messageLogging/filters
configuration element?

A) <add xmlns:addr="http://www.w3.org/2005/08/addressing"> //addr:Action[text() = 'http://contoso.com/IShipping/DoWork'] </add>
B) <add xmlns:soap="http://www.w3.org/2003/05/soap-envelope"> //soap:Action[text() = 'http://contoso.com/IShipping/DoWork'] </add>
C) <add xmlns:soap="http://www.w3.org/2003/05/soap-envelope"> //soap:Action[text() = 'http://contoso.com/IShipping/DoWorkResponse'] </add>
D) <add xmlns:addr="http://www.w3.org/2005/08/addressing"> //addr:Action[text() = 'http://contoso.com/IShipping/DoWorkResponse'] </add>

4. You are planning a deployment process for a set of interrelated Web services.
You need to ensure maximum availability of the Web services in the event of a hardware or software
failure.
Which approach should you recommend?

A) Run each distinct service on a separate virtual machine (VM).
B) Run each distinct service on a separate physical machine.
C) Run each distinct service on two virtual machines (VMs) hosted on one physical machine.
D) Run each distinct service on two separate physical machines.

5. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. The application connects to a Microsoft SQL Server 2008 database. The application uses DataContexts to query the database. You create a function that meets the following requirements: *Updates the Customer table on the database when a customer is marked as deleted. *Updates the related entries in other tables (CustomerAddress, CustomerContacts) by marking them as deleted. *Prevents consumer code from setting the Deleted column's value directly. You need to ensure that the function verifies that customers have no outstanding orders before they are marked as deleted. You also need to ensure that existing applications can use the updated function without requiring changes in the code. What should you do?

A) Add new entities to the DataContext object for the Customers and Orders tables.
B) Override the Update operation of the DataContext object.
C) Modify the SELECT SQL statement provided to the DataContext object to use an INNER JOIN between the Customer and Orders tables.
D) Override the Delete operation of the DataContext object.

Solutions: