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QUESTION 141
You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application. The application connects to a Microsoft SQL Server 2008 database. The application uses a Microsoft ADO.NET SQL Server managed provider. When a connection fails, the application logs connection information, including the full connection string. The information is stored as plain text in a .config file. You need to ensure that the database credentials are secure. Which connection string should you add to the .config file?

A.    Data Source=myServerAddress; Initial Catalog=myDataBase; Integrated Security=SSPI;
Persist Security Info=false;
B.    Data Source=myServerAddress; Initial Catalog=myDataBase; Integrated Security=SSPI;
Persist Security Info=true;
C.    Data Source=myServerAddress; Initial Catalog=myDataBase; User Id=myUsername;
Password=myPassword; Persist Security Info=false;
D.    Data Source=myServerAddress; Initial Catalog=myDataBase; User Id=myUsername;
Password=myPassword; Persist Security Info=true;

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QUESTION 101
You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application. You use the ADO.NET Entity Framework Designer to model entities. You need to create a Plain Old CLR Object (POCO) class that can be used with the ObjectContext.CreateObject method to create a proxy. What should you do?

A.    Create a custom data class that has a Protected constructor that does not have parameters.
B.    Create a custom data class in which all properties and methods are virtual.
C.    Create a custom data class that is abstract.
D.    Create a custom data class that is sealed.