Microsoft 70-513 : TS: Windows Communication Foundation velopment with Microsoft .NET Framework 4

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Microsoft 70-513 Exam Syllabus Topics:

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

Question #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; }

Question #2
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 ReplyAction property value to the endpoint address of the client.
B. On the client, create a proxy derived from DuplexClientBase(Of TChannel).
C. On the client, use GetCallbackChannel (Of T).
D. On the OperationContractAttribute, set the AsyncPattern property value to True.

Question #3
An ASP.NET application hosts a RESTful Windows Communication Foundation (WCF) service at /Services/Contoso.svc. The service provides a JavaScript resource to clients. You have an explicit reference to the JavaScript in your page markup as follows.
<script type="text/javaScript" src="/Services/Contoso.svc/js" />
You need to retrieve the debug version of the service JavaScript.
What should you do?

A. In the script tag, append debug to the src attribute.
B. In the <%@ ServiceHost %> header for /Services/Contoso.svc, set the Debug attribute to true.
C. In the script tag, add a debug attribute and set its value to true.
D. In the <%@ Page %> header, set the Debug attribute to true.

Question #4
You are developing a Windows Communication Foundation (WCF) service. One of the parameters used with the service operations is a security token. The security token is not sensitive. The monitoring software tracks security tokens and can read tokens in clear text only.
The company security policy requires that you validate all clear text data passed over the corporate network.
You need to ensure that the service verifies that the security token is not changed during transit.
What should you do?

A. Implement ISecureConversationSession in the message contract class.
B. For all the security-sensitive members, set the ProtectionLevel parameter of the MessageBodyMember or MessageHeader attribute to EncryptAndSign.
C. Implement IEndpointldentityProvider in the message contract class.
D. For all the security-sensitive members, set the ProtectionLevel parameter of the MessageBodyMember or MessageHeader attribute to Sign.

Question #5
You are developing a Windows Communication Foundation (WCF) service to provide an in-memory cache for many Web applications. The service contract is defined as follows. (Line numbers are included for reference only.)
01 <ServiceContract()> 02 Public Interface IDataCache 03
04 . . . 05 End Interface 06 07 08 Public Class DataCache 09 Implements IDataCache 10
11 . . . 12 End Class
You need to ensure that all users share the cache.
Which code segment should you insert at line 07?

A. <ServiceBehavior(TransactionIsolationLevel:= IsolationLevel.ReadCommitted)>
B. <ServiceBehavior (InstanceContextMode : = InstanceContextMode.PerSession)>
C. <ServiceBehavior(TransactionIsolationLevel:= IsolationLevel.RepeatableRead)>
D. <ServiceBehavior(InstanceContextMode:= InstanceContextMode.Single)>

Solutions: