多項選擇題

You develop a Windows Communication Foundation (WCF) service that employees use to access bonus information.You define the following service contract. (Line numbers are included for reference only.)
01 [ServiceContract(SessionMode = SessionMode.Required)]
02 public interface IFinancialService
03 {
04 [OperationContract]
05 string Login(int employeeID, string passwordHash);
06
07 [OperationContract]
08 double GetBonus(int month);
09
10 [OperationContract(IsTerminating = true)]
11 void Logout();
12 }
Client application can invoke methods without logging in. You need to ensure that the client applications invoke Login before invoking any other method. You also need to ensure that client applications cannot consume the service after invoking Logout.
Which two action should you perform? （）(Each correct answer presents part of the solution. Choose two.)。

A. Replace line 04 with the following code. [OperationContract(IsInitiating = false)]
B. Replace line 04 with the following code. [OperationContract(IsInitiating = true, IsTerminating = true)]
C. Replace line 07 with the following code. [OperationContract(IsInitiating = false)]
D. Replace line 10 with the following code. [OperationContract(IsInitiating = false, IsTerminating = true)]

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單項選擇題

You are developing a Windows Communication Foundation (WCF) service that is hosted by a Windows Forms Application.The ServiceHost instance is created in the Form Constructor.You need to ensure that the service is not blocked while the UI thread is busy.
What should you do?（）

A. Decorate the service implementation class with the following line of code [ServiceBehavior(UseSyncronizationContext = false)]
B. Decorate the service implementation class with the following line of code [ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Multiple)]
C. Call the Invoke method of the form and supply a delegate.
D. Call the BeginInvoke method of the form and supply a delegate.

單項選擇題

You are developing a Windows Communication Foundation (WCF) service that allows customers to update financial data.
The service contract is defined as follows. (Line numbers are included for reference only)
01 [ServiceContract]
02 public interface IDataUpdate
03 {
04 [OperationContract]
05 [TransactionFlow(TransactionFlowOption.Mandatory)]
06 void Update(string accountNumber, double amount);
07 }
08
09 class UpdateService : IDataUpdate
10 {
11 [OperationBehavior(TransactionScopeRequired = true, TransactionAutoComplete = false)]
12 public void Update(string accountNumber, double amount)
13 {
14 ...
15 }
16 }
17
You need to ensure that the service is invoked within the transaction.
What should you do?（）

A. Replace line 01 with the following code [ServiceContract(SessionMode = SessionMode.NotAllowed)]
B. Replace line 01 with the following code [ServiceContract(SessionMode = SessionMode.Required)]
C. Call the Invoke method of the form and supply a delegate.
D. Call the BeginInvoke method of the form and supply a delegate.

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你可能感興趣的試題

You are developing a Windows Communication Foundation (WCF) service that is hosted by a Windows Forms Application.The ServiceHost instance is created in the Form Constructor.You need to ensure that the service is not blocked while the UI thread is busy. What should you do?（）

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You are developing a Windows Communication Foundation (WCF) service that is hosted by a Windows Forms Application.The ServiceHost instance is created in the Form Constructor.You need to ensure that the service is not blocked while the UI thread is busy.
What should you do?（）