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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. The application connects to a Microsoft SQL Server 2008 database.
SQLConnection conn = new SQLConnection(connectionString);
conn.Open();
SqlTransaction tran = db.BeginTransaction(IsolationLevel. ...);
...
You must retrieve not commited records originate from various transactions. Which method should you use?

A) ReadUncommited
B) ReadCommited
C) RepeatableRead
D) Serializable

2. 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. You add the following store procedure
to the database.
CREATE PROCEDURE GetSalesPeople AS BEGIN
SELECT FirstName, LastName, Suffix, Email, Phone FROM SalesPeople END
You write the following code segment. (Line numbers are included for reference only.)
01 SqlConnection connection = new SqlConnection("...");
02 SqlCommand command = new SqlCommand("GetSalesPeople", connection);
03 command.CommandType = CommandType.StoredProcedure;
04 ...
You need to retreive all of the results from the stored procedure. Which code segment should you insert at line 04?

A) var res = command.ExecuteReader();
B) var res = command.ExecuteScalar();
C) var res = command.ExecuteNonQuery();
D) var res = command.ExecuteXmlReader();

3. 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. You create the classes shown in the following exhibit:

You add the following code segment to the application. (Line numbers are included for reference only.)
01 public void QueryPlayers (List <League> leagues) {
02 ...
03 }
You create a LINQ query to retrieve a collection of Player objects.
You need to ensure that the collection includes all the players from each team and every league. Which
code segment should you insert at line 02?

A) var query = leagues.SelectMany(l => l.Teams.SelectMany(t => t.Players));
B) var query = leagues.Select(l => l.Teams.Select(t => t.Players));
C) var query = leagues.Select(l => l.Teams.SelectMany(t => t.Players));
D) var query = leagues.SelectMany(l => l.Teams.Select(t => t.Players));

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 2008 database. The database includes a table named
dbo.Documents
that contains a column with large binary data. You are creating the Data Access Layer (DAL).
You add the following code segment to query the dbo.Documents table. (Line numbers are included for
reference only.)
01 public void LoadDocuments(DbConnection cnx)
02 {
03 var cmd = cnx.CreateCommand();
04 cmd.CommandText = "SELECT * FROM dbo.Documents";
05 ...
06 cnx.Open();
07 ...
08 ReadDocument(reader);
09 }
You need to ensure that data can be read as a stream. Which code segment should you insert at line 07?

A) var reader = cmd.ExecuteReader(CommandBehavior.Default);
B) var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess);
C) var reader = cmd.ExecuteReader(CommandBehavior.KeyInfo);
D) var reader = cmd.ExecuteReader(CommandBehavior.SchemaOnly);

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

Solutions: