You are creating a Windows Communication Foundation distributed application by using Microsoft .NET Framework 3.5. You write the following code segment to implement the service contract. (Line numbers are included for reference only.)

You need to ensure that the client applications of only those users who belong to the Administrators group can access the RemoveOrder method.
Which code segment should you insert at line 05?

• A. Option C
• B. Option D
• C. Option A
• D. Option B

You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. The service will contain an enumeration named OrderState.
The OrderState enumeration will contain the following four values:
The client application must be able to set the state of an Order entity to only the following two values:
You need to create the data contract for OrderState. Which code segment should you use?

• A. Option C
• B. Option D
• C. Option A
• D. Option B

You are creating a Windows Communication Foundation (WCF) service by using Microsoft .NET Framework 3.5. The WCF service will validate certificates to authorize
client applications. You write the following code segment. Class Store Implements IStore Public Sub RemoveOrder(ByVal ordered As Integer) _
Implements IStore. RemoveOrder End Sub End Class You need to ensure that only
those client applications that meet the following criteria can access the RemoveOrder method: "AdminUser" is the subject in the client certificate.
"1 bf47e90O0acf4c0089cda65e0aadcf1 cedd592" is the thumbprint in the client certificate. What should you do?

• A. Decorate the RemoveOrder method by using the following attribute.
  <PrincipalPermission(SecurityAction. Demand,
  _Role:="CN=AdminUser,1bf47e9000acf4c0089cda65eOaadcf1cedd592")> _ Initialize the
  serviceAuthorization element of the service behavior in the following manner.
  <serviceAuthorization principalPermissionMode="Windows7>
• B. Decorate the RemoveOrder method by using the following attribute.
  <PrincipalPermission(SecurityAction. Demand,
  _Role:="AdminUser,1 bf47e90100acf4c0089cda65e0aadcf1 cedd592")> _ Initialize the
  serviceAuthorization element of the service behavior in the following manner.
  <serviceAuthorization principalPermissionMode="UseAspNetRoles7>
• C. Decorate the RemoveOrder method by using the following attribute.
  <PrincipalPermission(SecurityAction. Demand,
  _Name:="AdminUser;1bf47e90C0acf4c0089cda65e0aadcf1cedd592")> _ Initialize the
  serviceAuthorization element of the service behavior in the following manner.
  <serviceAuthorization principalPermissionMode="Windows7>
• D. Decorate the RemoveOrder method by using the following attribute. <PrincipalPermission(SecurityAction. Demand, _Name:="CN=AdminUser;1bf47e90100acf4c0089cda65e0aadcf1cedd592")> _ Initialize the serviceAuthorization element of the service behavior in the following manner. <serviceAuthorization principalPermissionMode="UseAspNetRoles7>

You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5.
You create the following service definition
[ServiceContract(SessionMode=SessionMode.Required)] public interface IMyService {
... }
You need to custom manage the lifetime of the session.
Which service implementation should you use?

• A. [ServiceBehavior(UseSynchronizationContext=true)] public class serviceImpl { ... }
• B. [ServiceBehavior(UseSynchronizationContext=false)] public class serviceImpl { ... }
• C. [ServiceBehavior(AutomaticSessionShutdown=false)] public class serviceImpl { ... }
• D. [ServiceBehavior(AutomaticSessionShutdown=true)]
  public class serviceImpl
  {
  ...
  }

You create a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. The service contains the following code segment.

You need to ensure that the service instance is recycled when the transaction is complete.
Which line of code should you insert at line 07?

• A. [ServiceBehavior(ReleaseServiceInstanceOnTransactionComplete= true. ConcurrencyMode=ConcurrencyMode.Multiple, TransactionAutoCompleteOnSessionClose=true)]
• B. [ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Single, Transact ionAutoCompleteOnSess ionClose=true)]
• C. [ServiceBehavior(ReleaseServiceInstanceOnTransactionComplete= true. ConcurrencyMode=ConcurrencyMode.Single)]
• D. [ServiceBehavior(ReleaseServiceInstanceOnTransactionComplete= true. ConcurrencyMode=ConcurrencyMode.MultipleJ]