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Basic Delphi MCQ

1.
This question is based upon the figure shown below

From the code shown, how many times would the ShowMessage procedure be called if the button in question was clicked three (3) times?

Answer

Correct Answer: 2

Note: This Question is unanswered, help us to find answer for this one

2.
Which of the following retrieves the value from the SNumber field as a string for the current record in an open Table called Table1?

Table1.Field.SNumber.AsString;

String(Table1.Fields('SNumber'));

Table1.FieldByName('SNumber').AsString;

Table1.Items.String('SNumber');

Answer

Correct Answer: Table1.FieldByName('SNumber').AsString;

Note: This Question is unanswered, help us to find answer for this one

3.
Which of the following is the correct code to cause a popup menu named Popupmenu1 on a form called Form1 to be displayed?

Application.DisplayMenu(Form1.Popupmenu1);

Form1.Popupmenu1.Popup(20,30);

Form1.Popupmenu1.ShowMenu;

Form1.ShowMenu(Popupmenu1);

Answer

Correct Answer: Application.DisplayMenu(Form1.Popupmenu1);

Note: This Question is unanswered, help us to find answer for this one

4.
Given a TPageControl component called PageControl1 with three TabSheets called TabSheet1, TabSheet2 and TabSheet3 (in that order), which of the following will make TabSheet2 selected?

PageControl1.TabIndex:=1;

TabSheet2.Show;

PageControl1.ShowTab(TabSheet2);

PageControl1.VisibleTab:=TabSheet2;

TabSheet2.Click;

TabSheet2.Select(PageControl1);

Answer

Correct Answer: PageControl1.TabIndex:=1;

Note: This Question is unanswered, help us to find answer for this one

5.
Which key toggles between the Object Inspector and the Edit Window / Form?

ALT + O

F11

CTRL + ALT + TAB

Answer

Correct Answer: F11

Note: This Question is unanswered, help us to find answer for this one

6.
What is the purpose of the Initialization section of a Unit?

It contains assembly code that is executed on PC startup

It contains statements that are executed on unit start up

It contains Window handling code

It contains program management code and should not be edited directly by a programmer

Answer

Correct Answer: It contains statements that are executed on unit start up

Note: This Question is unanswered, help us to find answer for this one

7.
What is the purpose of the AlphaBlend property of TForm?

It specifies the background color of the form

It specifies if the form is translucent or not

It specifies if the form is available for drawing on via TCanvas

It specifies the redrawing speed of the form

Answer

Correct Answer: It specifies if the form is translucent or not

Note: This Question is unanswered, help us to find answer for this one

8.
What is the purpose of the TDataModule?

To provide a login to a secured or an encrypted database

To provide a temporary storage area of query results

To provide a location for centralized handling of non-visual components

To provide a connection to a remote database server

Answer

Correct Answer: To provide a location for centralized handling of non-visual components

Note: This Question is unanswered, help us to find answer for this one

9.
What does the procedure shown do?

It moves the contents of the file c:\autoexec.bat to the file c:\outfile.txt

It moves the contents of the file c:\outfile.txt to the file c:\autoexec.bat

It copies the contents of the file c:\autoexec.bat to the file c:\outfile.txt

It copies the contents of the file c:\outfile.txt to the file c:\autoexec.bat

Answer

Correct Answer: It copies the contents of the file c:\autoexec.bat to the file c:\outfile.txt

Note: This Question is unanswered, help us to find answer for this one

10.
What is the purpose of Code Templates?

To provide easy access to commonly used programming statements

To allow the creation of Document Templates from existing source code

To provide easy access to Native Databases without using components

To allow the conversion of selected code to a procedure

Answer

Correct Answer: To provide easy access to commonly used programming statements

Note: This Question is unanswered, help us to find answer for this one

11.
Which of the following properties when set to True, enables an application to gain sole access to a database?

TDatabase.OthersReadOnly

TDatabase.KeepConnection

TDatabase.Params

TDatabase.Exclusive

Answer

Correct Answer: TDatabase.Exclusive

Note: This Question is unanswered, help us to find answer for this one

12.
Given a ComboBox named ComboBox1 and an Edit box named Edit1, which of the following is the correct code to add the information in the Edit box to the drop down list in the ComboBox?

ComboBox1.Items.Add(Edit1.Text);

ComboBox1.Strings := ComboBox1.Strings + Edit1.Text;

ComboBox1.List.AddItem(Edit1.Text);

ComboBox1.Append(Edit1.Text);

Answer

Correct Answer: ComboBox1.Items.Add(Edit1.Text);

Note: This Question is unanswered, help us to find answer for this one

13.
The TTimer component has a property which determines how frequently the OnTimer event occurs. Which of the following is that property and what does the property measure?

Property: Time, Measured in: Seconds

Property: Timer, Measured in: Hundreds of a second (1/100 Sec)

Property: Interval, Measured in: Milliseconds (1/1000 Sec)

Property: Tick, Measured in: Clock Ticks

Answer

Correct Answer: Property: Interval, Measured in: Milliseconds (1/1000 Sec)

Note: This Question is unanswered, help us to find answer for this one

14.
What is the shortcut key for manually displaying the code completion window while entering code?

CTRL + SPACE

CTRL + ESC

CTRL + ALT + TAB

CTRL + Page Down

Answer

Correct Answer: CTRL + SPACE

Note: This Question is unanswered, help us to find answer for this one

15.
What is the purpose of the AutoMerge property in the TMainMenu component?

It determines if main menus of secondary forms merge with the main menu of the main form in non-MDI applications at runtime

It determines if sub menu items are automatically merged with the parent menu items if there is only a single sub menu item

It determines if the main menu items can be automatically resized at runtime so that they provide a "best fit" in a resizable form

It determines if the TMainMenu component can correct menu item short cut key conflicts with existing Windows short cut keys

Answer

Correct Answer: It determines if main menus of secondary forms merge with the main menu of the main form in non-MDI applications at runtime

Note: This Question is unanswered, help us to find answer for this one

16.
When will the code "Application.Terminate;" be executed in the code shown?

When the user presses the Cancel button

Every time the procedure is executed

When the user presses the Ok button

Never

Answer

Correct Answer: When the user presses the Ok button

Note: This Question is unanswered, help us to find answer for this one

17.
Which of the following is NOT an event of the TApplicationEvents component?

OnActionExecute

OnBusy

OnMessage

OnHint

OnException

OnSettingChange

Answer

Correct Answer: OnBusy

Note: This Question is unanswered, help us to find answer for this one

18.
Which of the following removes the SQL statement from a TQuery component called Query1?

Query1.SQL.Delete;

Query1.Delete(SQL

Query1.SQL.Clear;

Query1.Enabled:=False;

Answer

Correct Answer: Query1.SQL.Clear;

Note: This Question is unanswered, help us to find answer for this one

19.
In the code shown, TMyClass inherits from which parent class?

TApplication

TObject

Inheritance does not take place

TMyClass

Answer

Correct Answer: TObject

Note: This Question is unanswered, help us to find answer for this one

20.
What does the TDBLookupComboBox component do?

It allows a field value to be selected from a TList object specified by the programmer

It performs a search for a field with the same name as the text entered

It allows the selection of a database from a list of those found on a network

It identifies a set of field values in one dataset with a corresponding set of values from another dataset

Answer

Correct Answer: It performs a search for a field with the same name as the text entered

Note: This Question is unanswered, help us to find answer for this one

21.
Which of the following is the correct code to "tick" a TCheckBox component called CheckBox1 as shown?

CheckBox1.Checked:=True;

CheckBox1.Ticked:=True;

CheckBox1.Tick(True);

CheckBox1.Enabled:=True;

Answer

Correct Answer: CheckBox1.Checked:=True;

Note: This Question is unanswered, help us to find answer for this one

22.
Which of the following is the correct code to cause a form named Form1 to be displayed as modal?

Form1.Show;

ShowModal(Form1);

Form1.ModalResult:=mrOk

Form1.ShowModal;

Answer

Correct Answer: Form1.ShowModal;

Note: This Question is unanswered, help us to find answer for this one

23.
Which of the following would cause all the items in a RadioGroup to be appended so that all items appear twice?

Radiogroup1.Items.Duplicate;

Radiogroup1.Append(Radiogroup1);

Radiogroup1.Items.Append(rgALL);

Radiogroup1.Items.AddStrings(Radiogroup1.Items);

Answer

Correct Answer: Radiogroup1.Items.AddStrings(Radiogroup1.Items);

Note: This Question is unanswered, help us to find answer for this one

24.
What is the purpose of the Alignment Palette?

To change the order or position of the components in the Visual Component Library

To align the main IDE Windows to each other

To align components to the form, or with each other

To set the alignment property of any components on a form

Answer

Correct Answer: To align components to the form, or with each other

Note: This Question is unanswered, help us to find answer for this one

25.
What value is displayed on screen when the procedure test is called?

Answer

Correct Answer: 13

Note: This Question is unanswered, help us to find answer for this one

26.
Which of the following changes a TDBNavigator component called DBNavigator1 so that it only displays navigation buttons?

DBNavigator1.VisibleButtons := [nbFirst,nbLast,nbPrior,nbNext];

DBNavigator1.NavigationOnly := True;

DBNavigator1.Buttons := [nbFirst,nbLast,nbPrior,nbNext];

DBNavigator1.Constraints := [nbFirst,nbLast,nbPrior,nbNext];

Answer

Correct Answer: DBNavigator1.VisibleButtons := [nbFirst,nbLast,nbPrior,nbNext];

Note: This Question is unanswered, help us to find answer for this one

27.
What is the main difference between TLabel and TStaticText?

TStaticText has a Window Handle and can accept focus whereas TLabel does not have a Window Handle and cannot accept focus

TStaticText allows the user to edit the text displayed whereas TLabel does not allow the user to edit the text displayed

TLabel's caption property can be changed programmatically whereas TStaticText's Caption property cannot be changed programmatically

TLabel does not have a ShowAccelChar property whereas TStaticText does have a ShowAccelChar property

Answer

Correct Answer: TStaticText has a Window Handle and can accept focus whereas TLabel does not have a Window Handle and cannot accept focus

Note: This Question is unanswered, help us to find answer for this one

28.
What files end with the .dpk extension?

Unit Source files

Project Source files

Package Source files

Delphi Library

Answer

Correct Answer: Package Source files

Note: This Question is unanswered, help us to find answer for this one

29.
Which of the following is the correct code to create an object from class TMainForm?

Form.Create(TMainForm);

Application.CreateForm(TMainForm, MainForm);

TMainForm.CreateForm(MainForm);

MainForm:=Application.CreateFormInstance(TMainForm);

Answer

Correct Answer: Application.CreateForm(TMainForm, MainForm);

Note: This Question is unanswered, help us to find answer for this one

30.
Which of the following is the correct method to activate a modal open dialog box when using the TOpenDialog component?

OpenDialog1.OpenFile;

OpenDialog1.GetFile;

OpenDialog1.Filename;

OpenDialog1.Execute;

Answer

Correct Answer: OpenDialog1.Execute;

Note: This Question is unanswered, help us to find answer for this one

31.
How does a TRichEdit differ from a TMemo?

TRichEdit prevents users from overwriting existing text, whereas TMemo does not

TRichEdit allows saving directly to text files, whereas TMemo does not

TRichEdit prevents font attributes from being changed by the user, whereas TMemo does not

TRichEdit allows font attributes to be set, whereas TMemo does not

Answer

Correct Answer: TRichEdit allows font attributes to be set, whereas TMemo does not

Note: This Question is unanswered, help us to find answer for this one

32.
Given that x and y are variables declared as type Char, which of the following is NOT a valid Pascal assignment statement?

x := y;

x := Char(Ord(Y)+1);

x := Char(#22);

x := y + #22;

Answer

Correct Answer: x := y + #22;

Note: This Question is unanswered, help us to find answer for this one

33.
What happens if the TreeView1.Items list is empty when the code "TreeView1.Items.AddFirst(TreeView1.Items[0],'X');" is executed?

An X appears as the top most node in the TreeView

An "Index is out of bounds" error message is displayed

An ETreeViewError exception is raised with the message 'Invalid Index'

An X appears as a sub node to the first node in the TreeView

Answer

Correct Answer: An ETreeViewError exception is raised with the message 'Invalid Index'

Note: This Question is unanswered, help us to find answer for this one

34.
Which three properties of TProgressBar are responsible for setting the minimum, maximum and current position for the control?

Maximum, Minimum & Percentage

Maximum, Minimum & Position

Max, Min & Position

Max, Min & Pos

Answer

Correct Answer: Max, Min & Position

Note: This Question is unanswered, help us to find answer for this one

35.
Given the code "Edit1.Hint := 'Customer Name|Enter Customer Name in the edit box';", which of the following is the correct code to retrieve the text after the | character, i.e. "Enter Customer Name in the edit box", when the OnHint handler is called?

GetLongHint(Application.Hint);

GetHint(Application.Hint);

GetShortHint(Application.Hint);

GetSecondHint(Application.Hint);

Answer

Correct Answer: GetLongHint(Application.Hint);

Note: This Question is unanswered, help us to find answer for this one

36.
Which of the following is a event of TPanel?

OnClose

OnExit

OnTerminate

OnDoubleClick

Answer

Correct Answer: OnExit

Note: This Question is unanswered, help us to find answer for this one

37.
Which of the following will connect a DataSource to a Table where the Datasource component is call DataSource1 and the Table component is called Table1?

DataSource1.Table:=Table1;

DataSource1.DataSet:=Table1;

DataSource1.Source:=Table1;

DataSource1.SetTable(Table1);

Answer

Correct Answer: DataSource1.DataSet:=Table1;

Note: This Question is unanswered, help us to find answer for this one

38.
What is the value of the variable int_temp after the for loop has ended in the code shown?

The value of int_temp is undefined

Answer

Correct Answer: 1

Note: This Question is unanswered, help us to find answer for this one

39.
Which property of TBitBtn allows you to specify what image to display on the button?

BitBtn1.CaptionImage

BitBtn1.Image

BitBtn1.Glyph

BitBtn1.Picture

Answer

Correct Answer: BitBtn1.Glyph

Note: This Question is unanswered, help us to find answer for this one

40.
What does the Cancel property of the TButton object do?

It automatically displays Cancel as the button caption

It determines if the button's OnClick event handler is called when the Escape key <Esc> is pressed on the keyboard

It calls the parent forms' OnClose event

It causes a popup menu to be displayed when the button is clicked which permits the user to select Cancel

Answer

Correct Answer: It determines if the button's OnClick event handler is called when the Escape key <Esc> is pressed on the keyboard

Note: This Question is unanswered, help us to find answer for this one

41.
For a TQuery component called Query1 with SQL of "Select * from Student Where Number=500", which of the following is the correct method to run the query?

Query1.Active:=True;

Query1.RunSQL;

Query1.ExecuteAction(SQL);

Query1.ExecSQL;

Answer

Correct Answer: Query1.Active:=True;

Note: This Question is unanswered, help us to find answer for this one

42.
What is the purpose of the "Break" procedure?

It causes the flow of control to exit the current function or procedure and execute the next logical code statement

It causes the current thread to suspend execution to allow other threads to operate

It simulates the user pressing the Break key on the keyboard

It causes the flow of control to exit a loop and continue at the next statement following the loop

Answer

Correct Answer: It causes the flow of control to exit a loop and continue at the next statement following the loop

Note: This Question is unanswered, help us to find answer for this one

43.
Which of the following will link a TUpDown control named UpDown1 with an Edit box named Edit1, allowing the TUpDown control to modify the values in the Edit box?

UpDown1.Associate := Edit1;

UpDown1.Link := Edit1;

UpDown1.Link(Edit1);

Link(UpDown1,Edit1);

Answer

Correct Answer: UpDown1.Associate := Edit1;

Note: This Question is unanswered, help us to find answer for this one

44.
What component is used to link two datasets in a master/detail relationship?

TTable

TDataSource

TMasterDetail

TDatabase

Answer

Correct Answer: TDataSource

Note: This Question is unanswered, help us to find answer for this one

45.
Which of the following will add text to a TMemo component called Memo1?

Memo1.Lines.Add('Text');

Memo1.AddLine('Text');

Memo1.Lines.Include('Text');

Memo1.Lines.Append('Text');

Answer

Correct Answer: Memo1.Lines.Add('Text');

Note: This Question is unanswered, help us to find answer for this one

46.
TDataSet is a base class from which other database components are inherited to encapsulate which database object(s)?

A Table

A Trigger

A Field

A Query

A DBAware Component

A Stored Procedure

Answer

Correct Answer: A Query

Note: This Question is unanswered, help us to find answer for this one

47.
Which of the following are valid identifier names for a variable?

Cust_no5

Cust no5

5Cust_No

cUSTNo

cust&no

Answer

Correct Answer: Cust_no5

Note: This Question is unanswered, help us to find answer for this one

48.
Which of the following are the valid DeviceType property values for the TMediaPlayer component?

dtAutoSelect

dtMP3

dtExternalDevice

dtAudio

dtTV

dtMPEG3

dtDAT

dtDigitalVideo

Answer

Correct Answer: dtAutoSelect

Note: This Question is unanswered, help us to find answer for this one

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Basic Delphi MCQ

1. This question is based upon the figure shown below From the code shown, how many times would the ShowMessage procedure be called if the button in question was clicked three (3) times?

2. Which of the following retrieves the value from the SNumber field as a string for the current record in an open Table called Table1?

3. Which of the following is the correct code to cause a popup menu named Popupmenu1 on a form called Form1 to be displayed?

4. Given a TPageControl component called PageControl1 with three TabSheets called TabSheet1, TabSheet2 and TabSheet3 (in that order), which of the following will make TabSheet2 selected?

5. Which key toggles between the Object Inspector and the Edit Window / Form?

6. What is the purpose of the Initialization section of a Unit?

7. What is the purpose of the AlphaBlend property of TForm?

8. What is the purpose of the TDataModule?

9. What does the procedure shown do?

10. What is the purpose of Code Templates?

11. Which of the following properties when set to True, enables an application to gain sole access to a database?

12. Given a ComboBox named ComboBox1 and an Edit box named Edit1, which of the following is the correct code to add the information in the Edit box to the drop down list in the ComboBox?

13. The TTimer component has a property which determines how frequently the OnTimer event occurs. Which of the following is that property and what does the property measure?

14. What is the shortcut key for manually displaying the code completion window while entering code?

15. What is the purpose of the AutoMerge property in the TMainMenu component?

16. When will the code "Application.Terminate;" be executed in the code shown?

17. Which of the following is NOT an event of the TApplicationEvents component?

18. Which of the following removes the SQL statement from a TQuery component called Query1?

19. In the code shown, TMyClass inherits from which parent class?

20. What does the TDBLookupComboBox component do?

21. Which of the following is the correct code to "tick" a TCheckBox component called CheckBox1 as shown?

22. Which of the following is the correct code to cause a form named Form1 to be displayed as modal?

23. Which of the following would cause all the items in a RadioGroup to be appended so that all items appear twice?

24. What is the purpose of the Alignment Palette?

25. What value is displayed on screen when the procedure test is called?

26. Which of the following changes a TDBNavigator component called DBNavigator1 so that it only displays navigation buttons?

27. What is the main difference between TLabel and TStaticText?

28. What files end with the .dpk extension?

29. Which of the following is the correct code to create an object from class TMainForm?

30. Which of the following is the correct method to activate a modal open dialog box when using the TOpenDialog component?

31. How does a TRichEdit differ from a TMemo?

32. Given that x and y are variables declared as type Char, which of the following is NOT a valid Pascal assignment statement?

33. What happens if the TreeView1.Items list is empty when the code "TreeView1.Items.AddFirst(TreeView1.Items[0],'X');" is executed?

34. Which three properties of TProgressBar are responsible for setting the minimum, maximum and current position for the control?

35. Given the code "Edit1.Hint := 'Customer Name|Enter Customer Name in the edit box';", which of the following is the correct code to retrieve the text after the | character, i.e. "Enter Customer Name in the edit box", when the OnHint handler is called?

36. Which of the following is a event of TPanel?

37. Which of the following will connect a DataSource to a Table where the Datasource component is call DataSource1 and the Table component is called Table1?

38. What is the value of the variable int_temp after the for loop has ended in the code shown?

39. Which property of TBitBtn allows you to specify what image to display on the button?

40. What does the Cancel property of the TButton object do?

41. For a TQuery component called Query1 with SQL of "Select * from Student Where Number=500", which of the following is the correct method to run the query?

42. What is the purpose of the "Break" procedure?

43. Which of the following will link a TUpDown control named UpDown1 with an Edit box named Edit1, allowing the TUpDown control to modify the values in the Edit box?

44. What component is used to link two datasets in a master/detail relationship?

45. Which of the following will add text to a TMemo component called Memo1?

46. TDataSet is a base class from which other database components are inherited to encapsulate which database object(s)?

47. Which of the following are valid identifier names for a variable?

48. Which of the following are the valid DeviceType property values for the TMediaPlayer component?

1.
This question is based upon the figure shown below

From the code shown, how many times would the ShowMessage procedure be called if the button in question was clicked three (3) times?

2.
Which of the following retrieves the value from the SNumber field as a string for the current record in an open Table called Table1?

3.
Which of the following is the correct code to cause a popup menu named Popupmenu1 on a form called Form1 to be displayed?

4.
Given a TPageControl component called PageControl1 with three TabSheets called TabSheet1, TabSheet2 and TabSheet3 (in that order), which of the following will make TabSheet2 selected?

5.
Which key toggles between the Object Inspector and the Edit Window / Form?

6.
What is the purpose of the Initialization section of a Unit?

7.
What is the purpose of the AlphaBlend property of TForm?

8.
What is the purpose of the TDataModule?

9.
What does the procedure shown do?

10.
What is the purpose of Code Templates?

11.
Which of the following properties when set to True, enables an application to gain sole access to a database?

12.
Given a ComboBox named ComboBox1 and an Edit box named Edit1, which of the following is the correct code to add the information in the Edit box to the drop down list in the ComboBox?

13.
The TTimer component has a property which determines how frequently the OnTimer event occurs. Which of the following is that property and what does the property measure?

14.
What is the shortcut key for manually displaying the code completion window while entering code?

15.
What is the purpose of the AutoMerge property in the TMainMenu component?

16.
When will the code "Application.Terminate;" be executed in the code shown?

17.
Which of the following is NOT an event of the TApplicationEvents component?

18.
Which of the following removes the SQL statement from a TQuery component called Query1?

19.
In the code shown, TMyClass inherits from which parent class?

20.
What does the TDBLookupComboBox component do?

21.
Which of the following is the correct code to "tick" a TCheckBox component called CheckBox1 as shown?

22.
Which of the following is the correct code to cause a form named Form1 to be displayed as modal?

23.
Which of the following would cause all the items in a RadioGroup to be appended so that all items appear twice?

24.
What is the purpose of the Alignment Palette?

25.
What value is displayed on screen when the procedure test is called?

26.
Which of the following changes a TDBNavigator component called DBNavigator1 so that it only displays navigation buttons?

27.
What is the main difference between TLabel and TStaticText?

28.
What files end with the .dpk extension?

29.
Which of the following is the correct code to create an object from class TMainForm?

30.
Which of the following is the correct method to activate a modal open dialog box when using the TOpenDialog component?

31.
How does a TRichEdit differ from a TMemo?

32.
Given that x and y are variables declared as type Char, which of the following is NOT a valid Pascal assignment statement?

33.
What happens if the TreeView1.Items list is empty when the code "TreeView1.Items.AddFirst(TreeView1.Items[0],'X');" is executed?

34.
Which three properties of TProgressBar are responsible for setting the minimum, maximum and current position for the control?

35.
Given the code "Edit1.Hint := 'Customer Name|Enter Customer Name in the edit box';", which of the following is the correct code to retrieve the text after the | character, i.e. "Enter Customer Name in the edit box", when the OnHint handler is called?

36.
Which of the following is a event of TPanel?

37.
Which of the following will connect a DataSource to a Table where the Datasource component is call DataSource1 and the Table component is called Table1?

38.
What is the value of the variable int_temp after the for loop has ended in the code shown?

39.
Which property of TBitBtn allows you to specify what image to display on the button?

40.
What does the Cancel property of the TButton object do?

41.
For a TQuery component called Query1 with SQL of "Select * from Student Where Number=500", which of the following is the correct method to run the query?

42.
What is the purpose of the "Break" procedure?

43.
Which of the following will link a TUpDown control named UpDown1 with an Edit box named Edit1, allowing the TUpDown control to modify the values in the Edit box?

44.
What component is used to link two datasets in a master/detail relationship?

45.
Which of the following will add text to a TMemo component called Memo1?

46.
TDataSet is a base class from which other database components are inherited to encapsulate which database object(s)?

47.
Which of the following are valid identifier names for a variable?

48.
Which of the following are the valid DeviceType property values for the TMediaPlayer component?