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Exam : Microsoft 70-551
Title : UPGRADE:MCAD Skills to MCPD Dvlpr by Using the MS .NET Frmwk


1. You need to create a method to clear a Queue named q.
Which code segment should you use?
A. foreach (object e in q) {
q.Dequeue();
}
B. foreach (object e in q) {
Enqueue(null);
}
C. q.Clear();
D. q.Dequeue();
Answer: C

2. You are developing an application that stores data about your company's sales and technical support teams.
You need to ensure that the name and contact information for each person is available as a single collection when a user queries details about a specific team. You also need to ensure that the data collection guarantees type safety.
Which code segment should you use?
A. Dim team As Hashtable = New Hashtable()
team.Add(1, "Hance")
team.Add(2, "Jim")
team.Add(3, "Hanif")
team.Add(4, "Kerim")
team.Add(5, "Alex")
team.Add(6, "Mark")
team.Add(7, "Roger")
team.Add(8, "Tommy")
B. Dim team As ArrayList = New ArrayList()
team.Add("1, Hance")
team.Add("2, Jim")
team.Add("3, Hanif")
team.Add("4, Kerim")
team.Add("5, Alex")
team.Add("6, Mark")
team.Add("7, Roger")
team.Add("8, Tommy")
C. Dim team As New Dictionary(Of Integer, String)
team.Add(1, "Hance")
team.Add(2, "Jim")
team.Add(3, "Hanif")
team.Add(4, "Kerim")
team.Add(5, "Alex")
team.Add(6, "Mark")
team.Add(7, "Roger")
team.Add(8, "Tommy")
D. Dim team As String() = New String() { _
"1, Hance", _
"2, Jim", _
"3, Hanif", _
"4, Kerim", _
"5, Alex", _
"6, Mark", _
"7, Roger", _
"8, Tommy"}
Answer: C

3. Your Web site uses custom Themes. Your Web site must support additional Themes based on the user's company name.
The company name is set when a user logs on to the Web site. The company's Theme name is stored in a variable named ThemeName.
You need to use this variable to dynamically set the Web site's Theme.
What should you do?
A. Add the following code segment to the markup source of each page on the Web site.
　<%@ Page Theme="ThemeName" ... %>
B. Add the following code segment to the Load event of each page on the Web site.
　Page.Theme = ThemeName
C. Add the following code segment to the PreInit event of each page on the Web site.
　Page.Theme = ThemeName
D. Add the following code segment to the Web site's configuration file.
　<pages theme="ThemeName" />
Answer: C

4. You need to write a code segment that will add a string named strConn to the connection string section of the application configuration file.
Which code segment should you use?
A. Configuration myConfig =
ConfigurationManager.OpenExeConfiguration(
ConfigurationUserLevel.None);
myConfig.ConnectionStrings.ConnectionStrings.Add(
new ConnectionStringSettings("ConnStr1", strConn));
myConfig.Save();
B. Configuration myConfig =
ConfigurationManager.OpenExeConfiguration(
ConfigurationUserLevel.None);
myConfig.ConnectionStrings.ConnectionStrings.Add(
new ConnectionStringSettings("ConnStr1", strConn));
ConfigurationManager.RefreshSection(
"ConnectionStrings");
C. ConfigurationManager.ConnectionStrings.Add(
new ConnectionStringSettings("ConnStr1", strConn));
ConfigurationManager.RefreshSection(
"ConnectionStrings");
D. ConfigurationManager.ConnectionStrings.Add(
new ConnectionStringSettings("ConnStr1", strConn));
Configuration myConfig =
ConfigurationManager.OpenExeConfiguration(
ConfigurationUserLevel.None);
myConfig.Save();
Answer: A

5. You are creating an undo buffer that stores data modifications.
You need to ensure that the undo functionality undoes the most recent data modifications first. You also need to ensure that the undo buffer permits the storage of strings only.
Which code segment should you use?
A. Dim undoBuffer As New Stack(Of String)
B. Dim undoBuffer As New Stack()
C. Dim undoBuffer As New Queue(Of String)
D. Dim undoBuffer As New Queue()
Answer: A

6. You are writing a custom dictionary. The custom-dictionary class is named MyDictionary.
You need to ensure that the dictionary is type safe.
Which code segment should you use?
A. class MyDictionary : Dictionary<string, string>
B. class MyDictionary : HashTable
C. class MyDictionary : IDictionary
D. class MyDictionary { ... }
Dictionary<string, string> t =
new Dictionary<string, string>();
MyDictionary dictionary = (MyDictionary)t;
Answer: A

7. You are developing an application that stores data about your company's sales and technical support teams.
You need to ensure that the name and contact information for each person is available as a single collection when a user queries details about a specific team. You also need to ensure that the data collection guarantees type safety.
Which code segment should you use?
A. Hashtable team = new Hashtable();
team.Add(1, "Hance");
team.Add(2, "Jim");
team.Add(3, "Hanif");
team.Add(4, "Kerim");
team.Add(5, "Alex");
team.Add(6, "Mark");
team.Add(7, "Roger");
team.Add(8, "Tommy");
B. ArrayList team = new ArrayList();
team.Add("1, Hance");
team.Add("2, Jim");
team.Add("3, Hanif");
team.Add("4, Kerim");
team.Add("5, Alex");
team.Add("6, Mark");
team.Add("7, Roger");
team.Add("8, Tommy");
C. Dictionary<int, string> team =
new Dictionary<int, string>();
team.Add(1, "Hance");
team.Add(2, "Jim");
team.Add(3, "Hanif");
team.Add(4, "Kerim");
team.Add(5, "Alex");
team.Add(6, "Mark");
team.Add(7, "Roger");
team.Add(8, "Tommy");
D. string[] team =
new string[] {"1, Hance",
"2, Jim", "3, Hanif",
"4, Kerim", "5, Alex",
"6, Mark", "7, Roger",
"8, Tommy"};
Answer: C

8. You are writing a custom dictionary. The custom-dictionary class is named MyDictionary.
You need to ensure that the dictionary is type safe.
Which code segment should you use?
A. Class MyDictionary
　Implements Dictionary(Of String, String)
B. Class MyDictionary
　Inherits HashTable
C. Class MyDictionary
　Implements IDictionary
D. Class MyDictionary
　...
　End Class
　Dim t As New Dictionary(Of String, String)
　Dim dict As MyDictionary = CType(t, MyDictionary)
Answer: A

9. You are creating an undo buffer that stores data modifications.
You need to ensure that the undo functionality undoes the most recent data modifications first. You also need to ensure that the undo buffer permits the storage of strings only.
Which code segment should you use?
A. Stack<string> undoBuffer = new Stack<string>();
B. Stack undoBuffer = new Stack();
C. Queue<string> undoBuffer = new Queue<string>();
D. Queue undoBuffer = new Queue();
Answer: A

10. You need to create a method to clear a Queue named q.
Which code segment should you use?
A. Dim e As Object
For Each e In q
q.Dequeue()
Next
B. Dim e As Object
For Each e In q
q.Enqueue(Nothing)
Next
C. q.Clear()
D. q.Dequeue()
Answer: C

11. You have an SQL query that takes one minute to execute. You use the following code segment to execute the SQL query asynchronously.
Dim ar As IAsyncResult = cmd.BeginExecuteReader()
You need to execute a method named DoWork() that takes one second to run while the SQL query is executing. DoWork() must run as many times as possible while the SQL query is executing.
Which code segment should you use?
A. While ar.AsyncWaitHandle Is Nothing
DoWork()
End While
dr = cmd.EndExecuteReader(ar)
B. While Not ar.IsCompleted
DoWork()
End While
dr = cmd.EndExecuteReader(ar)
C. While Thread.CurrentThread.ThreadState = ThreadState.Running
DoWork()
End While
dr = cmd.EndExecuteReader(ar)
D. While Not ar.AsyncWaitHandle.WaitOne()
DoWork()
End While
dr = cmd.EndExecuteReader(ar)
Answer: B

12. Your Web site uses custom Themes. Your Web site must support additional Themes based on the user's company name.
The company name is set when a user logs on to the Web site. The company's Theme name is stored in a variable named ThemeName.
You need to use this variable to dynamically set the Web site's Theme.
What should you do?
A. Add the following code segment to the markup source of each page on the Web site.
　<%@ Page Theme="ThemeName" ... %>
B. Add the following code segment to the Load event of each page on the Web site.
　Page.Theme = ThemeName;
C. Add the following code segment to the PreInit event of each page on the Web site.
　Page.Theme = ThemeName;
D. Add the following code segment to the Web site's configuration file.
　<pages theme="ThemeName" />
Answer: C

13. You create the following Web user control named ErrorMessages.
<%@ Control Language="C#" AutoEventWireup="true"
CodeFile="ErrorMessages.ascx.cs"
Inherits="ErrorMessages" %>
<script language="C#" runat="server">
protected string m_Text = "This is a default message!";
public string Text {
get{ return m_Text;}
set{ m_Text = value;}
}
</script>
The ErrorMessages control uses a public property that displays the error message.
You need to change the default error message property on the Web Form in which the control is implemented.
Which code segment should you use?
A. <fabrikam:Message id="MyMessage"
MyMessage-Text="This is a custom message!"
runat="server"/>
B. <fabrikam:Message id="MyMessage"
MessageText="This is a custom message!"
runat="server"/>
C. <fabrikam:Message id="MyMessage"
Text="This is a custom message!"
runat="server"/>
D. <fabrikam:Message id="MyMessage"?Message_Text="This is a custom message!" runat="server"/>
Answer: C

14. You have an SQL query that takes one minute to execute. You use the following code segment to execute the SQL query asynchronously.
IAsyncResult ar = cmd.BeginExecuteReader();
You need to execute a method named DoWork() that takes one second to run while the SQL query is executing. DoWork() must run as many times as possible while the SQL query is executing.
Which code segment should you use?
A. while (ar.AsyncWaitHandle == null) {
DoWork();
}
dr = cmd.EndExecuteReader(ar);
B. while (!ar.IsCompleted) {
DoWork();
}
dr = cmd.EndExecuteReader(ar);
C. while (Thread.CurrentThread.ThreadState == ThreadState.Running) {
DoWork();
}
dr = cmd.EndExecuteReader(ar);
D. while (!ar.AsyncWaitHandle.WaitOne()) {
DoWork();
}
dr = cmd.EndExecuteReader(ar);
Answer: B