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Microsoft 070-513 Exam Syllabus Topics:

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

1. You have a secured Windows Communication Foundation (WCF) service.
You need to track unsuccessful attempts to access the service.
What should you do?

A) Set the Mode attribute of the security configuration element to Message.
B) Set the messageAuthenticationAuditLevel attribute of the serviceSecurityAudit behavior to Failure.
C) Set the includeExceptionDetaillnFaults attribute of the serviceDebug behavior to true.
D) Set the serviceAuthorizationManagerType attribute of the serviceAuthorization behavior to Message.

2. You are developing a Windows Communication Foundation (WCF) client application.
You instantiate a client class that inherits from ClientBase. The client instance must always be shut down in such a way that it can free up any resources it is referencing. You need to ensure that all exceptions are caught and the instance is always properly shut
down.
Which code segment should you use?

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

3. 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) Create the persistence provider database and configure the persistenceProvider element of the service behavior to point to that database.
B) 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.
C) Use wsHttpContextBinding for both the client application and the service.
D) Use basicHttpBinding for both the client application and the service.

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

5. You are implementing a Windows Communication Foundation (WCF) service contract named IContosoService in a class named ContosoService. The service occasionally fails due to an exception being thrown at the service.
You need to send the stack trace of any unhandled exceptions to clients as a fault message.
What should you do?

A) In the application configuration file on the service and all the clients, add the following
XML segment to the system.diagnostics/sources configuration section group.
<source name="System.ServiceModel" switchValue="Error" propagateActivity="true">
<listeners>
<add name="ServiceModelTraceListener"
initializeData="app_tracelog.svclog"
type="System.Diagnostics.XmlWriterTraceListener" />
</listeners>
</source>
B) For each OperationContract exposed by IContosoService, apply the following attribute.
[FaultContract(typeof(Exception))]
C) Apply the following attribute to the ContosoService class.
[ServiceBehavior(IncludeExceptionDetailInFaults = true)]
D) In the application configuration file on the client, add the following XML segment to the
system.serviceModel/behaviors configuration section group.
<endpointBehaviors>
<behavior name=" debug ">
< callback Debug includeExceptionDetailInFaults="true" />
</behavior>
</endpointBehaviors>
Associate the debug behavior with any endpoints that need to return exception details.

Solutions: