Microsoft TS: Accessing Data with Microsoft .NET Framework 4 : 70-516 Exam Questions

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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 that connects to a Microsoft SQL Server 2008 database. The application includes a SqlConnection named
conn and a SqlCommand named cmd.
You need to create a transaction so that database changes will be reverted in the event that an exception is
thrown.
Which code segment should you use?

A) var transaction = conn.BeginTransaction(); cmd.Transaction = transaction; try {
...
transaction.Commit();
}
catch
{
transaction.Dispose();
}
B) var transaction = conn.BeginTransaction(); cmd.Transaction = transaction; try {
...
transaction.Commit();
}
catch
{
transaction.Rollback();
}
C) var transaction = conn.BeginTransaction(); cmd.Transaction = transaction; try {
...
}
catch
{
transaction.Commit();
}
D) var transaction = conn.BeginTransaction(); cmd.Transaction = transaction; try {
...
transaction.Rollback();
}
catch
{
transaction.Dispose();
}

2. You have an existing ContosoEntities context object named context.
Calling the SaveChanges() method on the context object generates an exception that has the following inner exception:
System.Data.SqlClient.SqlException: Cannot insert duplicate key row in object 'dbo.Colors' with unique index 'IX_Colors'.
You need to ensure that a call to SaveChanges() on the context object does not generate this exception. What should you do?

A) Override the SaveChanges() method on the ContosoEntities class, call the ObjectStateManager.GetObjectStateEntries(System.Data.EntityState.Added) method, and call the AcceptChanges() method on each ObjectStateEntry object it returns
B) Examine the code to see how Color objects are allocated. Replace any instance of the new Color() method with a call to the ContosoEntities.LoadOrCreate() method.
C) Add a try/catch statement around every call to the SaveChanges() method.
D) Remove the unique constraint on the Name column in the Colors table.

3. 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 need to ensure that the model and mapping files are not deployed as application resources. What
should you do?

A) Set the value of the .edmx file's Build Action property to Copy to Output.
B) Set the value of the .edmx file's Metadata Artifact Processing property to Copy to Output Directory.
C) Modify the connection string in the application's .config file to refer to the relative path to the .edmx file.
D) Modify the connection string in the application's .config file to refer to the absolute physical path to the .edmx file.

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 over the network. The application uses data
from multiple related database tables.
You need to ensure that the application can be used if the connection is disconnected or unavailable.
Which object type should you use to store data from the database tables?

A) DataAdapter
B) DataSet
C) Data Services
D) DataReader

5. You are developing a new feature in the application to display a list of all bundled products.
You need to write a LINQ query that will return a list of all bundled products. Which query expression should
you use?

A) context.Parts.OfType<Product>() .ToList() .Where(p => p.Descendants.Any(d => d is Product))
B) context.Parts.Cast<Product>() .Where(p => p.Descendants.Any(d => d is Product))
C) context.Parts.OfType<Product>() .Where(p => p.Descendants.Any(d => d is Product))
D) context.Parts.Cast<Product>() .ToList() .Where(p => p.Descendants.Any(d => d is Product))

Solutions: