Quiz 3

Question 1

The following statement is valid:

Dim x As Double = 3,542.36

Answer 1

False

Question 2

If strVar.Length is 5, then the value of
strVar.Substring (4,1)
is the last character of the value of strVar

Answer 2

True

Question 3

Visual Basic always displays numbers in decimal format

Answer 3

True

Question 4

The exponential notation used in Visual Basic is exactly the same as standard mathematical notation

Answer 4

False

Question 5

When declaring a variable type String, you must specify a length for the string

Answer 5

False

Question 6

When declaring a variable that will refer to a submarine, a good name for the variable is sub

Answer 6

False

Question 7

The function Math.Int will always round mixed numbers down to the next lowest integer

Answer 7

True

Question 8

When using the equal sign to assign values, the variable on the left hand side of the equal sign will always receive the value

Answer 8

True

Question 9

The variable firstName and firstNAME are identical

Answer 9

True

Question 10

The following statement assigns 6 times the value of y to x:

x = 6y

Answer 10

False

Question 11

The following statement is valid:

y = y + 72

Answer 11

True

Question 12

A numeric variable that has not been assigned a value has the default value zero

Answer 12

True

Question 13

The statement a + b = c assigns to c the sum of the values of a and b

Answer 13

False

Question 14

The lstBox.Items.Clear() statement is used to empty the contents of a list box

Answer 14

True

Question 15

An assignment statement is used to assign a value to a variable or property

Answer 15

True

Question 16

You can use a variable name in almost any place you could use a literal value

Answer 16

True

Question 17

Numeric variables can be initialized to zero or any other number, but once they are initialized, they cannot be changed

Answer 17

False

Question 18

The following two statements are equivalent:
var1 = var2
var2 = var1

Answer 18

False

Question 19

The value of (11mod2) is 1

Answer 19

True

Question 20

The value of (11\2) is 1

Answer 20

False

Question 21

The following two statements are equivalent, where numVar is a numeric variable:
numVar = numVar + 1
numVar += 1

Answer 21

True

Question 22

The value of strVar.Length is the number of characters in the value of strVar

Answer 22

True

Question 23

The following lines are valid:
Dim h As String = “Hello”
txtBox.Text = CStr(h.IndexOf(“h”))

Answer 23

True

Question 24

All comment statements must be placed at the beginning of a program

Answer 24

False

Question 25

The statement lstBox.Items.Add("") clears all text from the list box

Answer 25

False

Question 26

The statement txtBox = "Hello" is an example of a syntax error

Answer 26

True

Question 27

The following statement is valid where dog and cat are variables of the same type: dog = cat

Answer 27

True

Question 28

Option Explicit requires you to declare every variable before its use

Answer 28

True

Question 29

With Option Strict On, a statement of the form intVar = dblVar is not valid.

Answer 29

True

Question 30

A statement of the form dblVar = intVar is a narrowing assignment statement.

Answer 30

False

Question 31

An assignment statement of the form intVar = 8 / 4 is not valid

Answer 31

True

Question 32

After the statement txtBox.Text = "" is executed, the text box will be clear and the cursor will appear inside the text box

Answer 32

False

Question 33

A string literal is a sequence of characters that is treated as a single entity

Answer 33

True

Question 34

When declaring a variable of type String, you must specify a length for the string

Answer 34

False

Question 35

Typecasting is used to convert a value to a different data type

Answer 35

True

Question 36

The Trim method is used to remove all blank space before and after a string

Answer 36

True

Question 37

The Substring method is used to extract a portion of a string

Answer 37

True

Question 38

The empty string is the same as a string that contains one space

Answer 38

False

Question 39

A variable declared inside an event procedure is said to have local scope

Answer 39

True

Question 40

A variable declared outside of an event procedure is said to have class-level scope

Answer 40

True

Question 41

A variable declared inside an event procedure cannot have the same name as a variable declared inside another procedure

Answer 41

False

Question 42

When a variable declared in one event procedure has the same name as a variable declared in another event procedure, any change to the value of one of the variables will affect the value of the other variable

Answer 42

False

Question 43

The value of (12345).ToString("C") is $12,345.00.

Answer 43

True

Question 44

The value returned by InputBox is a string

Answer 44

True

Question 45

The line continuation character must be preceded with a space

Answer 45

True

Question 46

When the Mask property of a masked text box is set to LL, at most two characters (consisting of letters or spaces) can be entered into the masked text box

Answer 46

True

Question 47

Named constants must have class-level scope

Answer 47

False

Question 48

The value assigned to a class-level named constant can be changed in any procedure

Answer 48

False

Question 49

The statement Const TAX_RATE As Double is not valid

Answer 49

True

Question 50

The value of DateDiff(DateInterval.Day, #1/1/2014#, #2/1/2014#) is 31

Answer 50

True