Deck 3: Building Arrays and Controlling Flow

Question 1

You use a(n)____ when  you want to store a group or a list of related information in a single, easily managed location.

A) function
B) console
C) array
D) conditional statement

Answer 1

C

Question 2

The conditional expression in the   while  statement  is enclosed within ____ following the keyword while .

A) slashes
B) parentheses
C) asterisks
D) dashes

Answer 2

B

Question 3

A set of statements contained within a set of braces is known as a(n)____ block.

A) reference
B) instance
C) object
D) command

Answer 3

D

Question 4

A(n)____ label in a switch statement represents a specific value and is followed by one or more statements that are executed if the value of the label matches the value of the switch statement's expression.

A) if
B) default
C) case
D) break

Question 5

A break statement restarts a loop with a new iteration.

Question 6

A(n)____ statement is used to end the execution of a switch statement.

A) else
B) continue
C) break
D) default

Question 7

You access an array element's value just as you access the value of any other variable, except that  you include the element index in brackets.

Question 8

Case labels must be discrete values and cannot use operators.

Question 9

The ____ statement controls program flow by executing a specific set of statements, depending on the value of an expression.

A) if
B) while
C) if...else
D) switch

Question 10

Each piece of data contained in an array is called a(n)____.

A) index
B) range
C) element
D) column

Question 11

The ____ statement is used to execute specific programming code if the evaluation of a conditional expression returns a truthy value.

A) default
B) continue
C) break
D) if

Question 12

Unlike the while statement, the statements in a ____  statement always execute once, before a conditional expression is evaluated.

A) do/continue
B) do/while
C) do/until
D) do/using

Question 13

An if statement keeps repeating until its conditional expression evaluates to false.

Question 14

Each repetition of a looping statement is called a(n)____.

A) case
B) element
C) iteration
D) condition

Question 15

A case label consists of the keyword case , followed by a literal value or variable name, followed by a ____.

A) semicolon
B) colon
C) period
D) comma

Question 16

The ____ label contains statements that execute when the value returned by the switch statement expression does not match a case label.

A) default
B) else
C) break
D) continue

Question 17

If you want to execute one set of statements when a condition evaluates to a truthy value and another set of statements when the condition evaluates to a falsy value, you need the ____ statement.

A) while
B) if/else
C) do/while
D) switch

Question 18

A ____ statement is a  a control flow statement that repeatedly executes a statement or a series   of statements while the value of a specific condition is truthy or until the value of a specific  condition becomes truthy .

A) decision-making
B) fork
C) break
D) loop

Question 19

One of the simplest types of loop statements is the ____ statement, which repeats a statement or series of statements as long as a given conditional expression evaluates to a truthy value.

A) continue
B) while
C) switch
D) if

Question 20

You can think of an array as a collection of variables contained within a single variable.

Question 22

Which method  returns a collection of references to all instances of  a certain element in an HTML document?

A)getElementById()
B) getElementsByName()
C)getElementsByTagName()
D)getElementsByClassName()

Question 23

What is the difference between an if statement and an if/else statement?

Question 24

What is the difference between the while and  do/while statements?

Question 25

What is a counter, and how is it used in programming?

Question 26

Each repetition of a looping statement is called a(n)____________________ .

Question 27

How is a for statement different from a while statement?

Question 28

The ____ statement is used to repeat a statement or series of statements as long as a given conditional expression evaluates to a truthy value.

A) for
B) continue
C) default
D) switch

Question 29

A single statement that declares a variable and specifies array values as its content is called an array ____.

A)index
B)element
C)constructor
D)literal

Question 30

A ____ statement restarts a loop with a new iteration.

A) break
B) continue
C) next
D) default

Question 31

To end a switch statement once it performs its required task, include a(n)____________________ statement at the end of the statements associated with each case label.

Question 32

Which of the following references the second element in the newsSections array?

A) newsSections[1]
B)newsSections[2]
C)newsSections(1)
D) newsSections(2)

Question 33

Changing the order in which JavaScript code is executed is known as  ____________________.

Question 34

Placing one decision-making statement within another decision-making statement creates  a(n)____________________  decision-making structure .

Question 35

Explain how to use an array literal to declare an array.

Question 36

In a(n)____________________ loop, a loop statement never ends because its conditional expression is never falsy.

Question 37

Define decision making and describe its role in programming.

Question 38

Describe the four steps that occur when a JavaScript interpreter encounters a for statement.

Question 39

What are loop statements used for in programming?

Question 40

Explain how index numbers are assigned to array elements and give an example.

Question 41

Explain what fallthrough is and how to prevent it.

Question 42

Explain how you access an element's value in an array.