Microsoft TS: Accessing Data with Microsoft .NET Framework 4 : 070-516

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Microsoft 070-516 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 create an application.
You use a TableAdapter object to load a DataTable object.
The DataTable object is used as the data source for a GridView control to display a table of customer
information on a Web page.
You need to ensure that the application meets the following requirements:
-Load only new customer records each time the page refreshes.
-Preserve existing customer records. What should you do?

A) Set the ClearBeforeFill property of the TableAdapter to false. Use the GetData method of the TableAdapter to create a new DataTable.
B) Set the ClearBeforeFill property of the TableAdapter to true. Use the Fill method of the TableAdapter to load additional customers.
C) Set the ClearBeforeFill property of the TableAdapter to true. Use the GetData method of the TableAdapter to create a new DataTable.
D) Set the ClearBeforeFill property of the TableAdapter to false. Use the Fill method of the TableAdapter.

2. 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 retrieve an entity from an object
context.
A different application updates the database. You need to update the entity instance to reflect updated
values in the database.
Which line of code should you use?

A) context.LoadProperty(entity, "Server", MergeOption.OverwriteChanges);
B) context.Refresh(RefreshMode.StoreWins, entity);
C) context.LoadProperty(entity, "Client", MergeOption.OverwriteChanges);
D) context.AcceptAllChanges() ;

3. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create a Windows Communication Foundation (WCF) Data Services service. The solution contains the projects shown in the following table.

The WCF data service exposes an Entity Framework model. You need to Access the service by using a
WCF Data Services client.
What should you do in the Application.Client Project?

A) Add a referance to the Application.Model Project.
B) Add a service reference that uses the URL of the WCF data service.
C) Add a web reference that uses the URL of the WCF data service.
D) Add a referance to the Application.Service Project.

4. You use Microsoft .NET Framework 4.0 to develop an application that connects to a Microsoft SQL Server
200B database.
You populate a SqlDataAdapter by using the following code. (Line numbers are included for reference only.)
01 SqlDataAdapter dataAdapter1 = new SqlDataAdapter("SELECT * FROM
[BlogEntries] ORDER BY CreationDate", connection);
02 cmdBuilder = new SqlCommandBuilder(dataAdapter1);
03 dataAdapter1.Fill(BlogEntryDataSet, "BlogEntries");
04 ....
05 connection.Close();
You need to update the blog owner for all BlogEntry records. Which code segment should you insert at line 04?

A) foreach(DataRow row in BlogEntryDataSet.Tables["BlogEntries"].Rows) {
row.Item["BlogOwner""] = "New Owner";
}
dataAdapter1.Update(BlogEntryDataSet, "BlogEntries");
B) foreach(DataRow row in BlogEntryDataSet.Tables["BlogEntries"].Rows) {
row.Item["BlogOwner""] = "New Owner";
}
dataAdapter1.Fill(BlogEntryDataSet, "BlogEntries");
C) SqlDataAdapter dataAdapter2 = new SqlDataAdapter("UPDATE [BlogEntries] SET [BlogOwner] = "New
'Owner' 3", connection);
dataAdapter2.Update(BlogEntryDataSet, "BlogEntries");
D) SqlDataAdapter dataAdapter2 = new SqlDataAdapter(dataAdapterl.UpdateCommand); dataAdapter2.Fill(BlogEntryDataSet, "BlogEntries");

5. Which one of these samples it the correct way to close the connection using Command Behavior?

A) SqlDataReader rdr = new SqlDataReader(); string sql = @"sql statement"; SqlConnection conn = connection.GetConnection(); SqlCommand cmd = new SqlCommand(sql, conn); SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection); rdr.Close(); Console.WriteLine("{0}", rdr);
B) using (SqlDataReader rdr = new SqlDataReader())
{
string sql = @"sql statement";
SqlConnection conn = connection.GetConnection();
SqlCommand cmd = new SqlCommand(sql, conn);
SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
Console.WriteLine("{0}", rdr);
}
C) SqlDataReader rdr = new SqlDataReader(); string sql = @"sql statement"; SqlConnection conn = connection.GetConnection(); SqlCommand cmd = new SqlCommand(sql, conn); SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection); Console.WriteLine("{0}", rdr);
D) SqlDataReader rdr = new SqlDataReader(); string sql = @"sql statement"; SqlConnection conn = connection.GetConnection(); SqlCommand cmd = new SqlCommand(sql, conn); SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection); conn.Close(); Console.WriteLine("{0}", rdr);

Solutions: