Exam Name : Microsoft Accessing Data with Microsoft .NET Framework 4 Exam
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Last Updated : January 16, 2014
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Question :
You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. The application contains the following code segment. (Line numbers are included for reference only.) 01 Class DataAccessLayer 02 Private Shared connString As String 03 04 ... 05 Public Shared Function GetDataTable(command As String) As DataTable 06 07 ... 08 End Function 09 End Class You need to define the connection life cycle of the DataAccessLayer class. You also need to ensure that the application uses the minimum number of connections to the database. What should you do?
- Insert the following code segment at line 03. Private Shared conn As New SqlConnection(connString) Public Shared Sub Open() conn.Open() End Sub Public Shared Sub Close() conn.Close() End Sub
- Insert the following code segment at line 03. Private conn As New SqlConnection(connString) Public Sub Open() conn.Open() End Sub Public Sub Close() conn.Close() End Sub
- Replace line 01 with the following code segment. Class DataAccessLayer Implements IDisposable Insert the following code segment to line 03. Private conn As New SqlConnection(connString) Public Sub Open() conn.Open() End Sub Public Sub Dispose() conn.Close() End Sub
- Insert the following code segment at line 06. Using conn As New SqlConnection(connString) conn.Open() End Using
Question :
You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Microsoft Windows Forms application, You plan to deploy the application to several shared client computers. You write the following code segment. (Line numbers are included for reference only.) 01 Dim config As Configuration = Conf igurationManager .OpenExeConf iguratlon(exeConf igName) 02 03 config.Save() 04 ... You need to encrypt the connection string stored in the .config file. Which code segment should you insert at line 02?
- Dim section As ConnectionStringsSection _ TryCast(config.GetSection("connectionString"), ConnectionStringsSection) section.Sectionlnformation.ProtectSection("DataProtectionConfigurationProvider")
- Dim section As ConnectionStcingsSection = TryCast(config.GetSecion("connectionStrings"), ConnectionStringsSection) section.Sectionlnformation.ProtectSection("RsaProtectedConf igurationProvider")
- Dim section As ConnectionStringsSection = TryCast(config.GetSection("connectionString") ConnectionStringsSection) section.Sectionlnformation.ProtectSection("RsaProtectedConfigurationProvider")
- Dim section As ConnectionStringsSection = TryCast(config.GetSection("connectionStrings"), ConnectionStringsSection) section.Sectionlnformation.ProtectSection("DataProtectionConfigurationProvider")
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