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Microsoft TS: Microsoft .NET Framework 2.0 - Web-based Client Development Sample Questions:

1. You write a class to interact with a database. The class uses a SqlConnection instance.
You need to detect when the state of the connection has been modified.
What should you do?

A) Write a method to handle the SqlConnection.Disposed event.
B) Write a method to override the SqlConnection.State property.
C) Write a method to handle the SqlConnection.StateChange event.
D) Write a method to handle the SqlConnection.InfoMessage event.

2. You are creating a Web application.
You create a Web page that contains the following code segment.
Dim lit As New Literal()
Page.Controls.Add(lit)
Dim doc As New System.Xml.XmlDocument()
doc.LoadXml("<root><elem>some text<child/>more text</elem></root>")
You need to display all the contents of the XML document that is loaded.
Which code segment should you add?

A) Dim elem As System.Xml.XmlNode = doc.DocumentElement.FirstChild lit.Text = Server.HtmlEncode (elem.InnerXml)
B) Dim elem As System.Xml.XmlNode = doc.DocumentElement.FirstChild lit.Text = Server.HtmlEncode (elem.OuterXml)
C) Dim elem As System.Xml.XmlNode = doc.DocumentElement lit.Text = elem.InnerText
D) Dim elem As System.Xml.XmlNode = doc.DocumentElement lit.Text = Server.HtmlEncode(elem.OuterXml)

3. You load an XmlDocument named doc with the following XML.
<bookstore>
<books>
<book genre="reference" >
<title>Dictionary</title>
</book>
<book genre="reference" >
<title>World Atlas</title>
</book>
</books>
</bookstore>
You need to change the value for the genre attribute to NA for all book attributes. First, you add the following code segment to your class.
Dim root As XmlElement = doc.DocumentElement
Dim nodes As XmlNodeList = root.SelectNodes("books/book")
Which additional two code segments can you use to achieve this goal? (Each correct answer presents a complete solution. Choose two.)

A) Dim node As XmlNode For Each node In nodes Dim genre As XmlNode = node.SelectSingleNode("genre") genre.Value = "NA" Next node
B) Dim node As XmlNode For Each node In nodes Dim genre As XmlNode = node.SelectSingleNode("@genre") genre.Value = "NA" Next node
C) Dim node As XmlNode For Each node In nodes node.Attributes(0).Value = "NA" Next node
D) Dim node As XmlNode For Each node In nodes Dim genre As XmlNode = node.SelectSingleNode("/genre") genre.Value = "NA" Next node
E) Dim node As XmlNode For Each node In nodes node.Attributes(1).Value = "NA" Next node

4. You are creating a Web application.
The Web application has a Web Form that contains a data grid named DgCustomers. You set the Web Form as asynchronous.
You write the following code segment in the code-behind file of the application.
public partial class _Default : System.Web.UI.Page
{
private SqlConnection connection;
private SqlCommand command;
private SqlDataReader reader;
protected void Page_Load(object sender, EventArgs e)
{
AddOnPreRenderCompleteAsync(
new BeginEventHandler(BeginAsyncOperation),
new EndEventHandler(EndAsyncOperation));
}
}
You need to retrieve and bind data from the Customers table. You also need to ensure that Web requests are not blocked during database operation.
Which two code segments should you add to the code-behind file of the Web Form? (Each correct answer presents part of the solution. Choose two.)

A) private void EndAsyncOperation(IAsyncResult ar){ reader = command.ExecuteReader(CommandBehavior.CloseConnection); DgCustomers.DataSource = reader; DgCustomers.DataBind(); }
B) private IAsyncResult BeginAsyncOperation(object sender, EventArgs e, AsyncCallback cb, object extradata){ connection = new SqlConnection("Data Source=.;Initial Catalog=Contoso;Integrated Security=True; Asynchronous Processing=True"); connection.Open(); command=new SqlCommand("Select * from Customers",connection); return command.BeginExecuteReader(cb, extradata, CommandBehavior.CloseConnection); }
C) private IAsyncResult BeginAsyncOperation(object sender, EventArgs e, AsyncCallback cb, object extradata){ connection = new SqlConnection("Data Source=.;Initial Catalog=Contoso;Integrated Security=True; Asynchronous Processing=True"); connection.Open(); command=new SqlCommand("Select * from Customers",connection); return cb.BeginInvoke(null, EndAsyncOperation, extradata); }
D) private void EndAsyncOperation(IAsyncResult ar){ reader = command.EndExecuteReader(ar); DgCustomers.DataSource = reader; DgCustomers.DataBind(); }

5. You are using the ASP.NET membership APIs to manage user accounts for a Web site. The Web.config
file contains the definition for the membership provider.
After modifying the Web.config file to enable password recovery, you create a PasswordReset.aspx file.?
You need to enable users to reset their passwords online.
The new passwords must be sent to them by e-mail after they have logged on through the Login.aspx
page.
In addition, users must be required to answer their secret questions before resetting their passwords.
Which code logic should you use?

A) Modify the Login.aspx form to include a Required Field validator on the secret question answer text box. Then redirect users to the PasswordReset.aspx file.
B) Modify the Page_Load to set the Membership.EnablePasswordReset to True in the PasswordReset.aspx file.
C) Add a PasswordRecovery element to the PasswordReset.aspx file and configure it.
D) Add a ChangePassword element to the PasswordReset.aspx file and configure it.

Solutions: