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Microsoft 70-516 Exam Syllabus Topics:

Microsoft TS: Accessing Data with Microsoft .NET Framework 4 Sample Questions:

1. 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 that is sealed.
C) Create a custom data class in which all properties and methods are virtual.
D) Create a custom data class that is abstract.

2. You use Microsoft .NET Framework 4.0 to develop an application.
You write the following code to update data in a Microsoft SQL Server 2008 database.
(Line numbers are included for reference only.)
01 private void ExecuteUpdate(SqlCommand cmd, string connString, string
updateStmt)
02 {
03 ...
04 }
You need to ensure that the update statement executes and that the application avoids connection leaks. Which code segment should you insert at line 03?

A) using (SqlConnection conn = new SqlConnection(connString))
{
cmd.Connection = conn;
cmd.CommandText = updateStmt;
cmd.ExecuteNonQuery();
cmd.Connection.Close();
}
B) SqlConnection conn = new SqlConnection(connString); conn.Open(); cmd.Connection = conn; cmd.CommandText = updateStmt; cmd.ExecuteNonQuery(); cmd.Connection.Close() ;
C) using (SqlConnection conn = new SqlConnection(connString))
{
conn.Open() ;
cmd.Connection = conn;
cmd.CommandText = updateStmt;
cmd.ExecuteNonQuery() ;
}
D) SqlConnection conn = new SqlConnection(connString); conn.Open(); cmd.Connection = conn; cmd.CommandText = updateStmt; cmd.ExecuteNonQuery();

3. You use Microsoft .NET Framework 4.0 to develop an application that connects to a Microsoft SQL Server
2008 database.
The application includes a table adapter named taStore, which has the following DataTable.

There is a row in the database that has a ProductID of 680. You need to change the Name column in the
row to "New Product Name".
Which code segment should you use?

A) var dt = new taStore.ProductDataTable(); var ta = new taStoreTableAdapters.ProductTableAdapter(); ta.Fill(dt); taStore.ProductRow row = (taStore.ProductRow)dt.Rows.Find(680) ; row.Name = "New Product Name"; ta.Update(row);
B) var ta = new taStoreTableAdapters.ProductTableAdapter(); var dt = ta.GetData(); var row = dt.Select("680") ; row[0]["Name"] = "New Product Name"; ta.Update(row);
C) var dt = new taStore.ProductDataTable(); var row = dt.NewProductRow(); row.ProductID = 680; row.Name = "New Product Name"; dt.Rows.Add(row) ;
D) var dt = new taStore.ProductDataTable(); var ta = new taStoreTableAdapters.ProductTableAdapter(); ta.Fill(dt); var dv = new DataView(); dv.RowFilter = "680"; dv[0]["Name"] = "New Product Name"; ta.Update(dt);

4. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application connects to a Microsoft SQL Server database. The application stores user names and
passwords in the database.
You need to ensure that users cannot read passwords extracted from the database. What should you do?

A) Encrypt stored passwords by using the TripleDESCryptoServiceProvider class.
B) Append a random salt to the password by using the RNGCryptoServiceProvider class. Encrypt stored passwords by using the RijndaelManaged class.
C) Encrypt stored passwords by using the RC2CryptoServiceProvider class.
D) Append a random salt to the password by using the RNGCryptoServiceProvider class. Hash stored passwords by using the SHA1CryptoServiceProvider class.

5. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application uses the ADO.NET Entity Framework to model entities. You deploy an application to a
production server.
The application uses the model and mapping files that are deployed as application resources.
You need to update the conceptual model for the application on the production server. What should you do?

A) Copy the updated .edmx file to the production server.
B) Copy the updated .ssdl file to the production server.
C) Recompile the application and redeploy the modified assembly file.
D) Copy the updated .csdl file to the production server.

Solutions: