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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 create an application.
You create a stored procedure to insert a new record in the Categories table according to following code
segment.
CREATE PROCEDURE dbo.InsertCategory @CategoryName navrchar(15),
@Identity int OUT
AS INSERT INTO Categories(CategoryName) VALUES (@CategoryName) SET @Identity = SCOPE_IDENTITY() RETURN @@ROWCOUNT
You add the following code fragment. (Line numbers are included for reference only.)
01 private static void ReturnIdentity(string connectionString)
02 {
03 using(SqlConnection connection = new SqlConnection(connectionString))
04 {
05 SqlDataAdpater adapter = new SqlDataAdapter("SELECT CategoryID,
CategoryName FROM dbo.Categories", connection);
06 adapter.InsertCommand = new SqlCommand("InsertCategory", connection);
07 adapter.InsertCommand.CommandType = CommandType.StoredProcedure;
08 SqlParameter rowcountParameter = adapter.InsertCommand.Parameters.Add
("@RowCount", SqlDbType.Int);
09 ...
10 adapter.InsertCommand.Parameters.Add("@CategoryName", SqlDbType.NChar,
15, "CategoryName");
11 SqlParameter identityParameter = adapter.InsertCommand.Parameters.Add
("@Identity", SqlDbType.Int, 0, "CategoryID");
12 ...
13 DataTable categories = new DataTable();
14 adapter.Fill(categories);
15 DataRow ctegoryRow = categories.NewRow();
16 categoryRow["CategoryName"] = "New beverages";
17 categories.Rows.Add(categoryRow);
18 adapter.Update(categories);
19 Int32 rowCount = (Int32)adapter.InsertCommand.Parameters
["@RowCount"].Value;
20 }
21 }
Which code elements needs to be added in the empty lines?

A) Insert the following code segment at line 09:
rowcountParameter.Direction = ParameterDirection.Output;
Insert the following code segment at line 12:
identityParameter.Direction = ParameterDirection.ReturnValue;
B) Insert the following code segment at line 09:
rowcountParameter.Direction = ParameterDirection.ReturnValue;
Insert the following code segment at line 12:
identityParameter.Direction = ParameterDirection.Output;
C) Insert the following code segment at line 09:
rowcountParameter.Direction = ParameterDirection.Output;
Insert the following code segment at line 12:
identityParameter.Direction = ParameterDirection.Output;
D) Insert the following code segment at line 09:
rowcountParameter.Direction = ParameterDirection.ReturnValue;
Insert the following code segment at line 12:
identityParameter.Direction = ParameterDirection.ReturnValue;

2. You use Microsoft .NET Framework 4.0 to develop an application that connects to a Microsoft SQL Server
2008 database.
You need to prevent dirty or phantom reads. Which IsolationLevel should you use?

A) ReadCommited
B) Snapshot
C) ReadUncommited
D) Serializable

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

4. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application. You use the Entity Framework Designer to create the following Entity Data Model.

You write a method named ValidatePostalCode to validate the postal code for the application.
You need to ensure that the ValidatePostalCode method is called before the PostalCode property set
method is completed and before the underlying value has changed.
Which code segment should you place in the entity's partial class?

A) partial void OnPostalCodeChanging(string value) {
ValidatePostalCode(value);
}
B) public string ValidatedPostalCode
{
set
{
_PostalCode = StructuralObject.SetValidValue("ValidatePostalCode", false);
}
get
{
return _PostalCode;
}
}
C) public string ValidatedPostalCode
{
set
{
ValidatePostalCode(value);
_PostalCode = value;
}
get
{
return _PostalCode;
}
}
D) partial void OnPostalCodeChanged(string value) {
PostalCode = GetValidValue<string>(value, "ValidatePostalCode", false, true) ;
}

5. You use Microsoft .NET Framework 4.0 to develop an application that connects to a local Microsoft SQL
Server 2008 database.
The application can access a high-resolution timer. You need to display the elapsed time, in sub-
milliseconds (<1 millisecond),
that a database query takes to execute. Which code segment should you use?

A) Stopwatch sw = new Stopwatch(); sw.Start() ; command.ExecuteNonQuery(); sw.Stop(); Console.WriteLine("Time Elapsed: {0:N} ms", sw.Elapsed.Milliseconds);
B) Stopwatch sw = Stopwatch.StartNew(); command.ExecuteNonQuery() ; sw.Stop() ; Console.WriteLine("Time Elapsed: {0:N} ms", sw.Elapsed.TotalMilliseconds);
C) DateTime Start = DateTime.UtcNow; command.ExecuteNonQuery(); TimeSpan Elapsed = DateTime.UtcNow - Start; Console.WriteLine("Time Elapsed: {0:N} ms", Elapsed.Milliseconds);
D) int Start = Environment.TickCount; command.ExecuteNonQuery(); int Elapsed = (Environment.TickCount) - Start; Console.WriteLine("Time Elapsed: {0:N} ms", Elapsed);

Solutions: