Question 1

The control is used to gather input the user has typed at the keyboard.
A) Label
B) Button
C) TextBox
D) ListBox

Accepted Answer

A TextBox control is specifically designed to receive and display user input from the keyboard. The other controls listed do not serve this purpose.

Question 2

What is the result after evaluating the following expression: 24 MOD 9
A) 6
B) 3
C) 2
D) 5

Accepted Answer

24 divided by 9 leaves a remainder of 6.

Question 3

What will be assigned to the label when the following statements execute? Dim dblVal As Double = 11.75 LblResult.Text = dblVal.ToString("n3") A) $11.75 B) 11.75 C) 11.750 D) 12

Accepted Answer

The "n3" format specified in the ToString method rounds the double value to 3 decimal places and includes trailing zeros if necessary, resulting in "11.750".

Question 4

The order in which controls receive the focus is called the __________.
A) control order
B) tab order
C) sequence order
D) focus order

Accepted Answer

The order in which controls receive the focus is called the tab order. This is because users can use the tab key to navigate through the controls in the order specified by the tab order.

Question 5

Which of the following statements will assign the contents of a TextBox control named txtInput into the Text property of a Label control named lblDisplay? A) txtInput = lblDisplay B) txtInput.Text = lblDisplay.Text C) lblDisplay = txtInput D) lblDisplay.Text = txtInput.Text

Accepted Answer

The correct syntax to assign the contents of a TextBox control to the Text property of a Label control is lblDisplay.Text = txtInput.Text. Option A is incorrect because it assigns the Label control to the TextBox control. Option B is incorrect because it assigns the Text property of the Label control to the Text property of the TextBox control. Option C is incorrect because it assigns the TextBox control to the Label control.

Question 6

A keyboard access key is assigned to a button using the button control's ______property.
A) ShortCut
B) Text
C) AccessKey
D) Alt

Accepted Answer

The Text property of a button control is used to assign a keyboard access key by including an ampersand (&) before the character that will be used as the access key.

Question 7

A Date literal can contain _____________.
A) a date
B) a time
C) a floating-point value
D) both a date and a time

Accepted Answer

Date literals in SQL can contain both a date and a time value. They are written in a specific format, such as 'YYYY-MM-DD HH:MI:SS' where the first part represents the date in year-month-day format and the second part represents the time in hour:minute:second format.

Question 8

The operator performs string concatenation.
A) ampersand (&)
B) dollar sign ($)
C) percent symbol (%)
D) pound symbol (#)

Accepted Answer

The ampersand (&) is used for string concatenation in most programming languages, including Java, C++, and Visual Basic. It is used to join two or more strings together into a single string.

Question 9

You can break up a long statement into multiple lines as long as you don't break up a __________.
A) keyword
B) quoted string
C) variable name
D) all of the above

Accepted Answer

In programming, breaking up a keyword, a quoted string, or a variable name across multiple lines would result in syntax errors or unintended behavior, as these elements need to be fully contained on a single line to be correctly interpreted by the compiler or interpreter.

Question 10

It's possible to view the order in which all controls on a form will receive the focus by __________.
A) clicking TabOrder in the Properties window
B) pressing the Esc key
C) clicking View on the menu bar and then Tab Order
D) all of the above

Accepted Answer

The correct way to view the order in which all controls on a form will receive the focus is by clicking View on the menu bar and then selecting Tab Order. This allows you to see and modify the tab sequence of the controls.

Question 11

If you want to display multiple lines of information in a message box, use the constant .
A) ControlChars.CrLf
B) strNEW_LINE
C) CARRAGE_RETURN_LINE_FEED
D) vbReturn

Accepted Answer

ControlChars.CrLf creates a new line in the message box by adding both a carriage return and a line feed, making it the best choice.

Question 12

You can perform all of the following actions with variables except:
A) Copy and store values entered by the user, so they may be manipulated
B) Assign a variable's value to a constant
C) Perform arithmetic on values
D) Remember information for later use in the program

Accepted Answer

Variables cannot have their values assigned to a constant, as constants are by definition unchangeable.

Question 13

Only controls capable of receiving some sort of input, such as _________________, may have the focus.
A) labels
B) text boxes
C) buttons
D) text boxes and buttons

Accepted Answer

Text boxes and buttons are interactive elements that can receive user input, such as typing or clicking, which is why they can have the focus. Labels, on the other hand, are used for displaying text to the user and do not receive input.

Question 14

All of the following are advantages of using named constants except
A) they can be used in the place of keywords.
B) it is easier to make a consistent change throughout a program.
C) they help make the program more self documenting.
D) they're useful for common values such as pi.

Accepted Answer

Named constants cannot be used in place of keywords, as keywords have a specific meaning in the programming language and cannot be redefined. The other options are all valid advantages of using named constants.

Question 15

All numeric and date data types have a ______method that returns a string representation of the contents of the variable.
A) Convert
B) String
C) ToString
D) ToText

Accepted Answer

The ToString method is used to convert a numeric or date data type into a string representation in order to display or manipulate its contents as a string. The other options are not valid methods for this specific purpose.

Question 16

The contents of a text box may be cleared in Visual Basic code by __________.
A) by assigning the predefined constant String.Empty to the text property
B) by setting the focus on the control and using the delete key
C) by setting the focus on the control and using the back space key
D) by clicking the clear button

Accepted Answer

The best way to clear the contents of a text box in Visual Basic code is to assign the predefined constant String.Empty to the text property. This will remove any existing text in the box without requiring any user interaction. Option B and C require user interaction to clear the text, which may not be desirable in all situations. Option D assumes the presence of a clear button, which may not always be the case.

Question 17

When you assign a value of one data type to a variable of another data type, Visual Basic attempts to perform _____type conversion.
A) string
B) explicit
C) implicit
D) numeric

Accepted Answer

When assigning a value of one data type to a variable of another data type, Visual Basic attempts to perform implicit type conversion. Implicit type conversion occurs when Visual Basic automatically converts a value from one data type to another data type without any assistance from the programmer. This is possible only if there is no chance of data loss or errors. Explicit type conversion, on the other hand, requires the programmer to manually convert a value from one data type to another using a conversion function or operator. Therefore, answer C is the best choice.

Question 18

In order to execute code before a form is displayed, place the code in the form's ______event handler.
A) SetUp
B) Load
C) Focus
D) Initialize

Accepted Answer

The Load event handler is fired after the form is created and initialized but before it is displayed. This is the best place to put code that needs to be executed before the form is displayed. The other event handlers listed are not relevant to this scenario.

Question 19

The statement to declare strName as a variable that can hold character data is _______________.
A) Dim strName As Text
B) Dim strName As Single
C) Dim strName As Word
D) Dim strName As String

Accepted Answer

In VBA, the data type for holding character data is "String". Therefore, the correct statement for declaring strName as a variable that can hold character data is "Dim strName As String". Option D is the correct option that declares strName as a string.

Question 20

The value returned by passing #12/31/10# to the CSng function is_________________ A) 12/31/2010 B) 123,110 C) 0 D) No value is returned. A runtime error is generated.

Accepted Answer

The CSng function in Visual Basic (VB) is used to convert an expression to a single-precision floating-point number. However, when you pass a date in the format #12/31/10# to the CSng function, it does not know how to convert a date value to a single-precision floating-point number, resulting in a runtime error.

Quiz 3: Variables and Calculations

The control is used to gather input the user has typed at the keyboard.

What is the result after evaluating the following expression: 24 MOD 9

What will be assigned to the label when the following statements execute? Dim dblVal As Double = 11.75 LblResult.Text = dblVal.ToString("n3")

The order in which controls receive the focus is called the __________.

Which of the following statements will assign the contents of a TextBox control named txtInput into the Text property of a Label control named lblDisplay?

A keyboard access key is assigned to a button using the button control's ______property.

A Date literal can contain _____________.

The operator performs string concatenation.

You can break up a long statement into multiple lines as long as you don't break up a __________.

It's possible to view the order in which all controls on a form will receive the focus by __________.

If you want to display multiple lines of information in a message box, use the constant .

You can perform all of the following actions with variables except:

Only controls capable of receiving some sort of input, such as _________________, may have the focus.

All of the following are advantages of using named constants except

All numeric and date data types have a ______method that returns a string representation of the contents of the variable.

The contents of a text box may be cleared in Visual Basic code by __________.

When you assign a value of one data type to a variable of another data type, Visual Basic attempts to perform _____type conversion.

In order to execute code before a form is displayed, place the code in the form's ______event handler.

The statement to declare strName as a variable that can hold character data is _______________.

The value returned by passing #12/31/10# to the CSng function is_________________