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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 develop an application that
uses the Entity Framework.
The application defines the following Entity Data Model.

Within the .edmx file, the following function is defined:
<Function Name="Round" ReturnType="Decimal"> <Parameter Name="val" Type="Decimal" /> <DefiningExpression>
CAST(val as Edm.Int32) </DefiningExpression> </Function>
The application includes the following LINQ query.
var query = from detail in context.SalesOrderDetails select detail.LineTotal.Round();
You need to ensure that the Round function executes on the database server when the query is executed. Which code segment should you use?

A) public static class DecimalHelper
{
public static SqlDecimal Round(this Decimal input)
{
return SqlDecimal.Round(input, 0);
}
}
B) public static class DecimalHelper
{
[EdmFunction("Edm", "Round")]
public static Decimal Round(this Decimal Amt)
{
throw new NotSupportedException();
}
}
C) public static class DecimalHelper
{
public static Decimal Round(this Decimal input)
{
return (Decimal)(Int32)input;
}
}
D) public static class DecimalHelper
{
[EdmFunction("SqlServer", "Round")]
public static Decimal Round(this Decimal Amt)
{
throw new NotSupportedException();
}
}

2. You use Microsoft Visual Studio 2010 and .NET Framework 4.0 to develop an application that uses the Entity Data Model for the fallowing database tables.

You need to ensure that the entity that is mapped to the ContectTypeDerived table derives from the entity that is mapped to the ContentTypeBase table. What should you do?

A) Create a function import for each entity.
B) Use a Table-Per-Hierarchy mapping method.
C) Create a complect type for each entity.
D) Use a Table-Per-Type mapping method.

3. You use Microsoft Visual Studio 2010 and Microsoft Entity Framework 4.0 to create an application.
The application connects to a Microsoft SQL Server database. You use the ADO.NET LINQ to SQL model
to retrieve data from the database.
The applications contains the Category and Product entities as shown in the following exhibit:

You need to ensure that LINO to SQL executes only a single SQL statement against the database. You also need to ensure that the query returns the list of categories and the list of products.
Which code segment should you use?
Exhibit:

A) using (NorthwindDataContext dc = new NorthwindDataContext()) { dc.DeferredLoadingEnabled = false;
var categories = from c in dc.Categories
select c;
foreach (var category in categories) { Console.WriteLine("{0} has {1} products", category.CategoryName, category.Products.Count); } }
B) using (NorthwindDataContext dc = new NorthwindDataContext()) { dc.DeferredLoadingEnabled = false;
DataLoadOptions dlOptions = new DataLoadOptions();
dlOptions.AssociateWith<Category>(c => c.Products);
dc.LoadOptions = dlOptions;
var categories = from c in dc.Categories
select c;
foreach (var category in categories) { Console.WriteLine("{0} has {1} products", category.CategoryName, category.Products.Count); } }
C) using (NorthwindDataContext dc = new NorthwindDataContext()) { dc.ObjectTrackingEnabled = false;
var categories = from c in dc.Categories
select c;
foreach (var category in categories) { Console.WriteLine("{0} has {1} products", category.CategoryName, category.Products.Count); } }
D) using (NorthwindDataContext dc = new NorthwindDataContext()) { dc.DeferredLoadingEnabled = false;
DataLoadOptions dlOptions = new DataLoadOptions();
dlOptions.LoadWith<Category>(c => c.Products);
dc.LoadOptions = dlOptions;
var categories = from c in dc.Categories select c;
foreach (var category in categories) { Console.WriteLine("{0} has {1} products", category.CategoryName, category.Products.Count); } }

4. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application that
uses the Entity Framework.
Entity types in the model are generated by the Entity Data Model generator tool (EdmGen.exe).
You write the following code. (Line numbers are included for reference only.)
01 MemoryStream stream = new MemoryStream();
02 var query = context.Contacts.Include("SalesOrderHeaders.SalesOrderDetails");
03 var contact = query.Where("it.LastName = @lastname", new ObjectParameter
("lastname", lastName)).First();
04 ....
You need to serialize the contact and all of its related objects to the MemoryStream so that the contact can
be deserialized back into the model.
Which code segment should you insert at line 04?

A) var formatter = new XmlSerializer(typeof(Contact), new Type[] { typeof(SalesOrderHeader), typeof(SalesOrderDetail)
});
formatter.Serialize(stream, contact);
B) var formatter = new BinaryFormatter(); formatter.Serialize(stream, contact);
C) var formatter = new XmlSerializer(typeof(Contact)); formatter.Serialize(stream, contact);
D) var formatter = new SoapFormatter(); formatter.Serialize(stream, contact);

5. 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 application uses a Microsoft
ADO.NET SQL Server managed provider.
When a connection fails, the application logs connection information, including the full connection string.
The information is stored as plain text in a .config file. You need to ensure that the database credentials are
secure.
Which connection string should you add to the .config file?

A) Data Source=myServerAddress; Initial Catalog=myDataBase; User Id=myUsername; Password=myPassword; Persist Security Info=true;
B) Data Source=myServerAddress; Initial Catalog=myDataBase; Integrated Security=SSPI; Persist Security Info=false;
C) Data Source=myServerAddress; Initial Catalog=myDataBase; User Id=myUsername; Password=myPassword; Persist Security Info=false;
D) Data Source=myServerAddress; Initial Catalog=myDataBase; Integrated Security=SSPI; Persist Security Info=true;

Solutions: