Deck 3: Using Variables and Constants

Question 1

A blank space must precede and follow the concatenation operator (&).

Answer 1

True

Question 2

A variable can be declared in more than one procedure without generating an error.

Answer 2

True

Question 3

A static variable is a procedure-level variable that retains its value even when the procedure in which it is declared ends.

Answer 3

True

Question 4

Integer, Long, and Short memory variables can store floating-point numbers.

Question 5

Data types and classes are not related to each other.

Question 6

Named constants make programs more self-documenting and easier to modify.

Question 7

The data type returned by the Val function is Short data type.

Question 8

Computers can process data stored in memory variables faster than data stored in a property of a control.

Question 9

Data declared as Decimal data type is not subject to small rounding errors that may occur with floating-point numbers.

Question 10

A named constant in a program can never be changed during program execution.

Question 11

A variable declared in the declaration section of a form is called a procedure-level variable.

Question 12

A form button that has a darkened border when it does not have the focus is called the default button.

Question 13

A variable that has procedure scope is available to all procedures in the application.

Question 14

All numeric variables are initialized to zero lacking code to the contrary.

Question 15

The distance to the sun is 93,000,000 miles, which can be written using exponential notation as 93.0E5.

Question 16

Boolean variables, when created, are always true unless otherwise stated.

Question 17

Single and Double type memory variables can hold floating-point numbers.

Question 18

A Short memory variable uses twice the amount of memory as an Integer variable.

Question 19

When the Cancel button or the Close button is clicked on a dialog box created by the InputBox function, default value of the dialog box is used.

Question 20

It is a good practice to use the data type with the largest storage requirements to maintain program efficiency.

Question 21

A variable that was not assigned a specific data type is assigned which data type?

A) Char
B) String
C) Boolean
D) Object

Question 22

A memory variable that is a Decimal data type requires ____ bytes of storage.

A) 2
B) 4
C) 8
D) 16

Question 23

When using the Visual Basic .NET InputBox function which of the following is the recommended standard?

A) sentence capitalization for both prompt and title
B) book title capitalization for the title and sentence capitalization for the prompt
C) book title capitalization for both prompt and title
D) Pascal case for both

Question 24

The Visual Basic .NET verb to create a variable is ____.

A) Declare
B) Create
C) Dim
D) Const

Question 25

The assignment symbol in Visual Basic .NET is the ____ symbol.

A) ^
B) <
C) >
D) =

Question 26

The least efficient data type, because the computer must determine the contents of the memory location first, is the ____ data type.

A) Boolean
B) Short
C) Integer
D) Object

Question 27

A literal constant is an item of data whose value does not change while the application is running.

Question 28

The Visual Basic .NET operator that concatenates two or more strings together is ____.

A) @
B) %
C) &
D) #

Question 29

Date variables are automatically set to which value when created?

A) 12:00 AM January 1, 1980
B) 12:00 AM January 1, 2000
C) 12:00 AM January 1, 0001
D) 12:00 AM January 1, 0000

Question 30

You can eliminate the problems that occur as a result of implicit type conversions by entering the Option Explicit On statement in the General Declarations section of the Code Editor window.

Question 31

Spaces are allowed in variable names.

Question 32

String and object variables are initialized to ____ when created.

A) spaces
B) Nothing (no data at all)
C) the word "Nothing"
D) zero

Question 33

The practice of capitalizing the first letter in the second and subsequent words in variable names is referred to as the Hungarian notation.

Question 34

Which of the following keys is used to select the default button?

A) Enter
B) Esc
C) Tab
D) Shift

Question 35

A memory variable that is a Single data type requires ____ bytes of storage.

A) 2
B) 4
C) 6
D) 8

Question 36

A variable's lifetime indicates how long the variable remains in the computer's internal memory.

Question 37

To force a procedure-level variable to retain its value even when the procedure in which it is declared ends execution, you must make it a ____ variable.

A) constant
B) persistent
C) static
D) const

Question 38

This combination of characters Chr(13) & Chr(10) forces Visual Basic .NET ____.

A) to issue a carriage return followed by a line feed
B) to exit the routine and restart
C) to restart from the beginning of the subroutine
D) to strip the remainder of the routine

Question 39

A memory variable that is a Double data type requires ____ bytes of storage.

A) 2
B) 4
C) 6
D) 8

Question 40

A default button is identified by setting the Windows form's ____ property.

A) DefaultButton
B) AcceptButton
C) SelectedButton
D) CancelButton

Question 41

A variable name must begin with a letter or the ____.

A) ampersand (&)
B) percent sign (%)
C) exclamation mark (!)
D) underscore (_)

Question 42

A control's ____ event occurs when the contents of a control's Text property are altered.

A) CodeChanged
B) TextChanged
C) ChangedText
D) TextModified

Question 43

The keyword ____ is used to create a named constant within a Visual Basic .NET program.

A) Fixed
B) Const
C) ConstantFixed
D) Perm

Question 44

The ____ keyword in a procedure header is used to associate a procedure with different objects or events.

A) private
B) handles
C) local
D) associate

Question 45

The ____ class contains methods that you can use to convert a numeric value to a specified data type.

A) Convert
B) Format
C) Parse
D) Number

Question 46

Which of the following can store a floating-point number?

A) Single
B) Long
C) String
D) Integer

Question 47

To produce output of the number 125 as $125.00 you would use which of the following functions?

A) CurrencyFormat
B) Format$
C) Format
D) FormatOutput

Question 48

Every numeric data type in Visual Basic .NET has a ____ method that can be used to convert a string to that numeric data type.

A) Convert
B) Format
C) Parse
D) Number

Question 49

Instead of storing data in the properties of various controls, programmers can create ____, which are named memory locations to store data.

A) characters
B) variables
C) integers
D) strings

Question 50

The ____ of a variable determines where in the program a variable can be used.

A) dim
B) type
C) scope
D) extent