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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. The application uses a Microsoft ADO.NET SQL Server managed provider.
"Data Source=myServerAddress; Initial Catalog=myDataBase; User Id=myUsername; Password=secret;"
You need to ensure that the database credentials are secure. Which is the correct Property to insert?

A) Integrated Security=false;
B) Persist Security Info=false;
C) Persist Security Info=true;
D) Integrated Security=SSPI;

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

3. You use Microsoft .NET Framework 4.0 to develop an ASP.NET Web application that connects to a
Microsoft SQL Server 2008 database.
The application uses Integrated Windows authentication in Internet Information Services (IIS) to
authenticate users.
A connection string named connString defines a connection to the database by using integrated security.
You need to ensure that a SqlCommand executes under the application pool's identity on the database
server.
Which code segment should you use?

A) using (var conn = new SqlConneccion())
{
using (HostingEnvironroent.Impersonate())
{
conn.ConnectionString = connString;
}
var cmd = new SqlCommand("SELECT * FROM BLOG, conn);
conn.Open() ;
var result = cmd.ExecuteScalar();
}
B) using (var conn = new SqlConnection())
{
conn.ConnectionString = connString;
SqlCommand cmd = null;
using (HostingEnvironment.Impersonate())
{
cmd = new SqlCommand("SELECT * FROM BLOG", conn);
}
conn.Open();
var result = cmd.ExecuteScalar();
}
C) using (var conn = new SqlConnection())
{
conn.ConnectionString = connString;
var cmd = new SqlCommand("SELECT * FROM BLOG", conn);
using (HostingEnvironment.Impersonate())
{
conn.Open();
}
var result = cmd.ExecuteScalar();
}
D) using (var conn = new SqlConnection(connString))
{
var cmd = new SqlCommand ("SELECT * FROM BLOG, conn);
conn.Open();
using(HostingEnvironment.Impersonate())
{
var result = cmd.ExecuteScalar();
}
}

4. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application. You use the ADO.NET Entity Framework to model entities. You write the following code segment. (Line numbers are included for reference only.)
01 public partial class SalesOrderDetail : EntityObject
02 {
03 partial void OnOrderQtyChanging(short value)
04 {
05 ...
06 {
07 ...
08 }
09 }
10 }
You need to find out whether the object has a valid ObjectStateEntry instance. Which code segment should you insert at line 05?

A) if (this.EntityState != EntityState.Unchanged)
B) if (this.EntityState != EntityState.Added)
C) if (this.EntityState != EntityState.Detached)
D) if (this.EntityState != EntityState.Modified)

5. How do you define a WCF Data Service query to grab the first 10 records. Options are something like:

A) DataServiceQuery<Order> selectedOrders = context.Orders.AddQueryOption("$top", "10");
B) DataServiceQuery<Order> selectedOrders = context.Orders.AddQueryOption("$expand", "10");
C) DataServiceQuery<Order> selectedOrders = context.Orders.AddQueryOption("$filter", "10");
D) DataServiceQuery<Order> selectedOrders = context.Orders.AddQueryOption("$select", "10");

Solutions: