Javascript Quiz - Ch2 - Data Types (Gosselin)

Front 1

The values a program stores in computer memory are commonly called variables. Technically
speaking, though, a variable is actually a specific value in the computer’s memory. T/F

Back 1

FALSE
p59

Hint 1

p59

Front 2

JavaScript is a loosely typed programming language. T/F

Back 2

TRUE
p67

Hint 2

p67

Front 3

In JavaScript programming, you can only use the words yes and no to indicate Boolean values. T/F

Back 3

FALSE
p71

Hint 3

p71

Front 4

Comparison operators are used to compare two operands and determine if one numeric value is greater
than another. T/F

Back 4

TRUE
p85

Hint 4

p85

Front 5

Logical operators are used for comparing two string operands for equality.

Back 5

FALSE
p88

Hint 5

p88

Front 6

The equal sign (=) in the following statement is called a(n) ____.
var variable_name = value;

Back 6

assignment operator
p61

Hint 6

a. value separator c. assignment operator
b. equals comparison d. declaration operator

Front 7

Data types that can be assigned only a single value are called ____ types.

Back 7

primitive
p66

Hint 7

a. primitive c. numeric
b. null d. Boolean

Front 8

Programming languages that require you to declare the data types of variables are called ____
programming languages.

Back 8

strongly typed
p67

Hint 8

a. dynamic typed c. static typed
b. strongly typed d. loosely typed

Front 9

JavaScript is a ____ typed programming language.

Back 9

loosely
p67

Hint 9

a. static typed c. strongly typed
b. loosely typed d. numeric typed

Front 10

A positive or negative number with no decimal places is called a(n)____.

Back 10

integer
p68

Hint 10

a. floating-point number c. exponential number
b. scientific number d. integer

Front 11

A(n) ____ contains a set of data represented by a single variable name.

Back 11

array
p71

Hint 11

a. group c. string
b. array d. list

Front 12

A ____ is a special type of function that is used as the basis for creating reference variables (that is,
variables whose data type is the reference data type).

Back 12

constructor
p72

Hint 12

a. list builder c. constructor
b. referencer d. grouper

Front 13

The numbering of elements within an array starts with a number of zero (0). A(n) ____ is an element’s
numeric position within the array.

Back 13

index
p72

Hint 13

a. index c. reference
b. location d. descriptor

Front 14

The Array class contains a single property, the ____ property, which returns the number of elements
in an array.

Back 14

length
p75

Hint 14

a. count c. describe
b. show d. length

Front 15

You use operands and operators to create expressions in JavaScript. ____ are variables and literals
contained in an expression.

Back 15

Operands
p76

Hint 15

a. Operators c. Locations
b. Operands d. Strings

Front 16

You can use an arithmetic operator to return the modulus of a calculation, which is the ____ when you divide one number by another number.

Back 16

remainder left
p77

Hint 16

a. remainder left c. product
b. quotient d. difference

Front 17

What is the value of returnValue?
var x, y, returnValue;
x = 12;
y = 8;
returnValue = x / y;

Back 17

1.5
p78

Hint 17

a. 1 c. 4
b. 1.5 d. 20

Front 18

What is the value of returnValue?
var x, y, returnValue
x = 12;
y = 8;
returnValue = x % y;

Back 18

4
p78

Hint 18

a. 1 c. 20
b. 4 d. 150%

Front 19

What is the value of returnValue?
var x, y, returnValue
x = "3";
y = "2";
returnValue = x + y;

Back 19

32
p79

Hint 19

a. “3+2” c. 6
b. 5 d. 32

Front 20

What is the value of x after these two statements execute?
var x = 1;
x++;

Back 20

2
p80

Hint 20

a. -1 c. 1
b. 0 d. 2

Front 21

The compound addition assignment operator is ____.

Back 21

+=
p84

Hint 21

a. += c. ==+
b. == d. =+

Front 22

The strict equal operator is ____.

Back 22

===
p86

Hint 22

a. = c. <>
b. === d. !==

Front 23

Which is the AND operator?

Back 23

&&
p88

Hint 23

a. != c. &&
b. || d. ==

Front 24

Literal strings can be assigned a zero-length string value called a(n) ____ string.

Back 24

empty
p89

Hint 24

a. empty c. short
b. undefined d. byte

Front 25

A(n) ____ tells the compiler or interpreter that the character that follows it has a special purpose.

Back 25

escape character
p91

Hint 25

a. exclamation point c. null character
b. escape character d. upper case character

Front 26

Which arithmetic operators have the highest precedence?

Back 26

* / %
p96

Hint 26

a. * / % c. &&
b. < <= d. + -

Front 27

Identify the letter of the choice that best matches the phrase or definition.
a. variable
b. index
c. postfix operator
d. null
e. constructor
f. identifier
g. operator precedence
h. floating-point
i. empty string

1. The order in which operations in an expression are evaluated
2. The name you assign to a variable
3. A special function used as the basis for creating reference variables
4. A number that contains decimal places or that is written in exponential notation
5. Value a program stores in computer memory
6. An element’s numeric position within an array
7. An empty value
8. A zero-length string value
9. Placed after a variable

Back 27

1. ANS: G PTS: 1 REF: 95
2. ANS: F PTS: 1 REF: 60
3. ANS: E PTS: 1 REF: 72
4. ANS: H PTS: 1 REF: 68
5. ANS: A PTS: 1 REF: 59
6. ANS: B PTS: 1 REF: 72
7. ANS: D PTS: 1 REF: 66
8. ANS: I PTS: 1 REF: 89
9. ANS: C PTS: 1 REF: 80