多项选择题 You work as an application developer at Contoso.com. You use Microsoft .NET Framework 3.5 and Microsoft ADO.NET to develop an application that will connect to the Microsoft SQL Server 2005 database. You then define the connection string of the application as follows：   "Server=Prod；Database=WingtipToys；Integrated Security=SSPI；Asynchronous Processing=true"   The following code segment is used on the application： （Line numbers are included for reference only.）   01 protected void UpdateData（SqlCommand cmd） {   02     cmd.Connection.Open（）；  03  04     lblResult.Text = "Updating ..."；  05 }   You discover that the cmd object takes a long time to execute. You want to make sure that the application continues to execute while cmd is executing.   What should you do？（）

单项选择题 You work as an application developer at Contoso.com. You use Microsoft .NET Framework 3.5 and Microsoft ADO.NET to develop an application. The database on the Microsoft SQL Server 2005 database has two tables that are displayed by using two SqlConnection objects in two different GridView controls. You want the tables to be displayed at the same time with the use a single SqlConnection object.   What should you do？（）

单项选择题 You work as an application developer at Contoso.com. You use Microsoft .NET Framework 3.5 and Microsoft ADO.NET to develop an application. The user name and password that is kept by the connection string is stored directly in the code of the application. You want to make sure that the password in the connection string is as protected.   What should you do？ （）