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Microsoft 70-516 Exam Syllabus Topics:

Microsoft TS: Accessing Data with Microsoft .NET Framework 4 Sample Questions:

Question 1

You use Microsoft Visual Studio 2010 and .NET Framework 4.0 to enhance and existing application use
Entity Framework.
The classes that represent the entites in the model are Plain old CLR Object (POCO) Classes.
You need to connect the existing POCO classes to an entity framework context. What should you do?

A. 1. Generate a MetadataWorkspace and create an ObjectContext for the model.
2.Create an ObjectSet fort he POCO classes.
3.Disable Proxy object creation on the ContextOptions of the ObjectContext.
B. 1. Generate an Entity Data Model for the POCO classes.
2.Create an ObjectSet for the POCO classes.
3.Set Code Generation Strategy on the Entity Data Model to none.
4.Create an ObjectContext for the model.
C. 1. Generate an Entity Data Model fort he POCO classes.
2.Create an ObjectSet fort he POCO classes.
3.Disable Proxy object creation on the ContextOptions of the ObjectContext.
4.Enable lazy loading on the ContextOptions of the ObjectContext.
D. 1. Generate a MetadataWorkspace and create an ObjectContext for the model.
2.Disable Proxy object creation on the ContextOptions of the ObjectContext.
3.Enable lazy loading on the ContextOptions of the ObjectContext.

Question 2

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application that uses the ADO.NET Entity Framework to model entities. You create an entity model as shown in the following diagram.

You need to ensure that all Person entities and their associated EmailAddresses are loaded. Which code segment should you use?

A. var people = context.People.Except(new ObjectQuery<Person>("Person.EmailAddresses", context)).ToList();
B. var people = context.People.Except(new ObjectQuery<Person>("EmailAddresses", context)).ToList();
C. var people = context.People.Include("EmailAddresses").ToList();
D. var people = context.People.Include("Person.EmailAddresses").ToList();

Question 3

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 performs a database query within a transaction.
You need to ensure that the application can read data that has not yet beed commited by other
transactions.
Which IsolationLevel should you use?

A. Unspecified
B. RepeatableRead
C. ReadCommitted
D. ReadUncommitted

Question 4

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 SKIP @skip TOP Stop VALUE product FROM AdventureWorksEntities.Products AS product ORDER BY product.ListPrice
B. SELECT TOP Stop VALUE product FROM AdventureWorksEntities.Products AS product ORDER BY product.ListPrice SKIP @skip
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

Question 5

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
You are creating the data layer of the application. You write the following code segment.
(Line numbers are included for reference only.)
01 public static SqlDataReader GetDataReader(string sql)
02 {
03 SqlDataReader dr = null;
04 ...
05 return dr;
06 }
You need to ensure that the following requirements are met: The SqlDataReader returned by the GetDataReader method can be used to retreive rows from the database.
--
SQL connections opened within the GetDataReader method will close when the SqlDataReader is closed.
Which code segment should you insert at the line 04?

A. using(SqlConnection cnn = new SqlConnection(strCnn)) { try { SqlCommand cmd = new SqlCommand(sql, cnn); cnn.Open(); dr = cmd.ExecuteReader(); } catch {
throw;
}
}
B. SqlConnection cnn = new SqlConnection(strCnn); SqlCommand cmd = new SqlCommand(sql, cnn); cnn.Open(); { try { dr = cmd.ExecuteReader(); } finally {
cnn.Close();
}
}
C. SqlConnection cnn = new SqlConnection(strCnn); SqlCommand cmd = new SqlCommand(sql, cnn); cnn.Open(); { try { dr = cmd.ExecuteReader(); cnn.Close(); } catch {
throw;
}
}
D. SqlConnection cnn = new SqlConnection(strCnn); SqlCommand cmd = new SqlCommand(sql, cnn);
cnn.Open();
{
try
{
dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
}
catch
{
cnn.Close();
throw;
}
}

Solutions: