Try Microsoft : 70-503 practice torrent pass for sure

You are creating a Windows Communication Foundation (WCF) service by using Microsoft .NET Framework 3.5.
The WCF service must authenticate the client applications by validating credit card numbers and expiry dates. You write the following code segment. (Line numbers are included for reference only.)
01 class CreditCardTokenAuthenticator: SecurityTokenAuthenticator
02 {
03 // Implementation of other abstract methods comes here.
04 protected override ReadOnlyCollection<IAuthorizationPolicy> ValidateTokenCore(SecurityToken token)
05 {
06 CreditCardToken creditCardToken = token as CreditCardToken;
07 }
09 private bool IsCardValid(string cardNumber, 13 DateTime expirationDate)
10 {
11 // Validation code comes here.
12 }
13 }
You need to implement custom authentication for the WCF service. Which code segment should you insert at line 07?

• A. if (IsCardValid(creditCardToken.CardNumber, creditCardToken.ValidTo))
  return new List<IAuthorizationPolicy>(0).AsReadOnly();
  else
  return null;
• B. if (IsCardValid(creditCardToken.CardNumber, creditCardToken.ValidTo))
  return null;
  else
  return new List<IAuthorizationPolicy>(0).AsReadOnly();
• C. if (IsCardValid(creditCardToken.CardNumber, creditCardToken.ValidTo))
  return null;
  else
  throw new SecurityTokenValidationException();
• D. if (IsCardValid(creditCardToken.CardNumber, creditCardToken.ValidTo))
  throw new SecurityTokenValidationException();
  else
  return null;

You are creating a remote database management application by using Microsoft Windows Forms and Microsoft .NET Framework 3.5. You use the Windows Communication Foundation model to create the application.
You write the following code segment. (Line numbers are included for reference only.)
01 Public Class ()ueryAnalyzerService 02 Implements IQueryAnalyzerService, IDisposable
04 Public Sub Open() 05 ...
06 End Sub 07 Public Sub ExecuteSql(ByVal sql As String) 08...
09 End Sub
10 Public Sub Close()
11 ...
12 End Sub
13 Public Sub Dispose() Implements IDisposable.Dispose 14...
15 End Sub 16...
17 End Class
You need to ensure that each time a client application calls the Open0 method, a new service instance is created. Which code segment should you insert at line 03?

• A. <OperationBehavior(TransactionScopeRequired:=True)> _
• B. <OperationBehavior(AutoDisposeParameters:=True)> _
• C. <OperationBehavior( _ ReleaselnstanceMode:=ReleaselnstanceMode.None)> _
• D. <OperationBehavior(_ ReleaselnstanceMode:=ReleaselnstanceMode.BeforeCall>

You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5.
You create the following service contract.

You need to create an endpoint for the service contract in the application configuration file.
Which endpoint should you use?

• A. <endpointaddress="" binding="basicHttpBinding" contract="HyServices.ServiceConfig"/>
• B. <endpointaddress="" binding="basicHttpBinding" contract="ServiceConfig"/>
• C. <endpointaddress="" binding="basicHttpBinding" contract="HyService"/>
• D. <endpointaddress="" binding="basicHttpBinding" contract="HyServices.HyService"/>

How do you ensure Clipboard content is available if Service or client application is restarted?

• A. Apply [DurableService] attribute to service and [DurableOperation] to each method.
• B. Do a Copy() and Paste() to a local file, then when the service is restarted, read text from the local file.
• C. Modify service to use [ServiceBehavior(InstanceContextMode=InstanceContextMode. Single)]
• D. Increase session timeout to 60 minutes

You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5.
The service contains the following code segment.
[ServiceContract]
public interface IMathSrvc
{
[OperationContract]
void AddNumbers(int num);
[OperationContract]
int Clear();
}
You need to ensure that the service meets the following requirements:
Which code segment should you use to replace the existing code segment?

• A. [ServiceContract]
  public interface IMathSrvc
  {
  [OperationContract(IsTerminating=false)]
  void AddNumbers(int num);
  [OperationContract(IsTerminating=true)]
  int Clear();
  }
• B. [ServiceContract]
  public interface IMathSrvc
  {
  [OperationContract(IsInitiating=true, IsOneWay=true)]
  void AddNumbers(int num);
  [OperationContract(IsTerminating=true)]
  int Clear();
  }
• C. [ServiceContract]
  public interface IMathSrvc
  {
  [OperationContract]
  void AddNumbers(int num);
  [OperationContract(IsInitiating=false, IsTerminating=true)]
  int Clear();
  }
• D. [ServiceContract]
  public interface IMathSrvc
  {
  [OperationContract(IsOneWay=true)]
  void AddNumbers(int num);
  [OperationContract(IsTerminating=true)]
  int Clear();
  }