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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 develop an application.
You use the ADO.NET Entity Framework Designer to model entities.
The application includes self-tracking entities as shown in the following diagram.

There is a Person entity names person1 that has TrackChanges turned on.
You need to delete all e-mail addresses that are associated with person1 by using an ObjectContext.
What are two possible code segments that you can use to achieve this goal?
(Each correct answer presents a complete solution. Choose two).

A) foreach(var email in person1.EMailAddresses){
email.MarkAsDeleted();
}
context.SaveChanges();
B) while(person1.EMailAddresses.Count>0){
person1.EmailAddresses.RemoveAt(0);
}
context.SaveChanges();
C) person1.EMailAddresses = null; context.SaveChanges();
D) person1.EMailAddresses = new TrackableCollection<EMailAddress>(); context.SaveChanges();

2. You use Microsoft .NET Framework 4 to develop an application that connects to a Microsoft SQL Server
2008 database.
You add the following stored procedure to the database.
CREATE PROCEDURE [dbo].[InsertTag] @Name nvarchar (15)
AS INSERT INTO [dbo].[Tags] (Name) VALUES(@Name) RETURN @@ROWCOUNT
You need to invoke the stored procedure by using an open SqlConnection named conn. Which code segment should you use?

A) SqlCommand cmd = new SqlCommand("InsertTag", conn); cmd.CommandType = CommandType.StoredProcedure; cmd.Parameters.AddWithValue("@Name", "New Tag 1"); cmd.ExecuteNonQuery();
B) SqlCommand cmd = new SqlCommand("EXEC InsertTag", conn); cmd.CommandType = CommandType.Text; cmd.Parameters.AddWithValue("@Name", "New Tag 1"); cmd.ExecuteNonQuery();
C) SqlCommand cmd = new SqlCommand("EXEC InsertTag", conn); cmd.CommandType = CommandType.StoredProcedure; cmd.Parameters.AddWithValue("@Name", "New Tag 1"); cmd.ExecuteNonQuery();
D) SqlCommand cmd = new SqlCommand("InsertTag", conn); cmd.CommandType = CommandType.Text; cmd.Parameters.AddWithValue("@Name", "New Tag 1"); cmd.ExecuteNonQuery();

3. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application connects to several SQL Server databases. You create a function that modifies customer
records that are stored in multiple databases.
All updates for a given record are performed in a single transaction. You need to ensure that all transactions
can be recovered. What should you do?

A) Call the Reenlist method of the TransactionManager class.
B) Call the EnlistDurable method of the Transaction class.
C) Call the RecoveryComplete method of the TransactionManager class.
D) Call the EnlistVolatile method of the Transaction class.

4. You use Microsoft .NET Framework 4.0 to develop an application that uses LINQ to SQL. The LINQ to SQL
model contains the Product entity.
A stored procedure named GetActiveProducts performs a query that returns the set of active products from
the database.
You need to invoke the stored procedure to return the active products, and you must ensure that the LINQ
to SQL context can track changes to these entities. What should you do?

A) Navigate to the GetActiveProducts stored procedure in Server Explorer, and drag the procedure onto the Product entity in the LINQ to SQL model designer surface.
B) Select the Product entity, view the entity's property window, and change the Source for the entity to GetActiveProducts.
C) Add a property named GetActiveProducts to the Product entity.
D) Select the Product entity, view the entity's property window, and change the Name for the entity to GetActiveProducts.

5. You use Microsoft .NET Framework 4.0 to develop an application that uses Entity Framework. The application includes the following Entity SQL (ESQL) query.
SELECT VALUE product FROM AdventureWorksEntities.Products AS product ORDER BY product.ListPrice
You need to modify the query to support paging of the query results. Which query should you use?

A) SELECT TOP Stop VALUE product FROM AdventureWorksEntities.Products AS product ORDER BY product.ListPrice SKIP @skip
B) SELECT SKIP @skip TOP Stop VALUE product FROM AdventureWorksEntities.Products AS product ORDER BY product.ListPrice
C) SELECT SKIP @skip VALUE product FROM AdventureWorksEntities.Products AS product ORDER BY product.ListPrice LIMIT @limit
D) SELECT VALUE product FROM AdventureWorksEntities.Products AS product ORDER BY product.ListPrice SKIP @skip LIMIT @limit

Solutions: