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Microsoft 70-513 Exam Syllabus Topics:

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

1. A Windows Communication Foundation (WCF) service handles online order processing for
your company.
You discover that many requests are being made with invalid account numbers.
You create a class named AccountNumberValidator that has a method named Validate.
Before the message is processed, you need to validate account numbers with AccountNumberValidator and reject messages with invalid account numbers.
You create a new class that implements the IParameterInspector interface.
Which code segment should you use in this class?

A) public void AfterCall(string operationName, object[] outputs,
object returnValue,
object correlationState)
{
string accountNumber = GetAccountNumber(outputs);
var validator = new AccountNumberValidator();
if(!validator.Validate(accountNumber))
{
throw new FaultException();
}
}
public object BeforeCall(string operationName, object[] inputs)
{
return null;
}
B) public void AfterCall(string operationName,
object[] outputs,
object returnValue,
object correlationState)
{
return;
}
public object BeforeCall(string operationName,
object[] inputs)
{
string accountNumber = GetAccountNumber(inputs);
var validator = new AccountNumberValidator();
if (!validator.Validate(accountNumber))
{
throw new FaultException();
}
return null;}
C) public void AfterCall(string operationName,
object[] outputs,
object returnValue,
object correlationState)
{
return;
}
public
object BeforeCall(string operationName, object[] inputs) {
string accountNumber = GetAccountNumber(inputs);
var validator = new AccountNumberValidator();
if (!validator.Validate(accountNumber))
{
return new FaultException();
}
}
D) public void AfterCall(string operationName,
object[] outputs,
object returnValue,
object correlationState)
{
string accountNumber = GetAccountNumber(outputs);
var validator = new AccountNumberValidator();
if(!validator.Validate(accountNumber)
}
{
returnValue = new FaultException();
}
}
public object BeforeCall(string operationName,
object[] inputs)
{ return null; }

2. A Windows Communication Foundation (WCF) service is deployed with netTcpBinding. This service uses a duplex message exchange pattern. You are developing the next version of the WCF service.
You discover that your company's hardware load balancer performs correctly only for WCF services that use HTTP.
You need to ensure that your service works with the load balancer.
What should you do?

A) Use wsHttpBinding.
B) Create a custom binding that has the compositeDuplex, textMessageEncoding, and namedPipeTransport binding elements in this order.
C) Use basicHttpBinding.
D) Create a custom binding that has the compositeDuplex. textMessageEncoding, and wsHttpTransport binding elements in this order.

3. You are creating a Windows Communication Foundation (WCF) service that accepts messages from clients when they are started. The message is
defined as follows. <MessageContract()> Public Class Agent Public Property CodeName As String Public Property SecretHandshake As String End Class You have the following requirements:
The CodeName property must be sent in clear text. The service must be able to verify that the property value was not changed after being sent by the client.
The SecretHandshake property must not be sent in clear text and must be readable by the service.
What should you do?

A) Add an ImmutableObject attribute to the CodeName property and set its value property to True. Add a Browsable attribute to the SecretHandshake property and set its value to False.
B) Add a MessageBodyMember attribute to the CodeName property and set the ProtectionLevel to Sign. Add a MessageBodyMember attribute to the SecretHandshake property and set the ProtectionLevel to EncryptAndSign.
C) Add an XmlText attribute to the CodeName property and set the DataType property to Signed. Add a PasswordPropertyText attribute to the SecretHandshake property and set its value to True.
D) Add a DataProtectionPermission attribute to the each property and set the ProtectData property to True.

4. A Windows Communication Foundation (WCF) service sends notifications when the service is started and stopped.
You need to implement a client that logs these notifications.
Which class should you use?

A) DiscoveryClient
B) HttpListener
C) AnnouncementClient
D) AnnouncementService

5. You are creating a client application and configuring it to call a Windows Communication Foundation (WCF) service. When the application is deployed, it will be configured to send all messages to a WCF routing service.
You need to ensure that the application can consume the target service after the application is deployed.
What should you do?

A) In the client application, add a service reference to the target service. In the client binding configuration, specify the address of the router service.
B) In the client application, add a service reference to the router service. In the client binding configuration, specify the address of the target service.
C) In the client application, add a service reference to the target service. In the client binding configuration, specify the address of the target service.
D) In the client application, add a service reference to the router service. In the client binding configuration, specify the address of the router service.

Solutions: