Deck 4: Decision Structures

Question 1

Which type of structure is used to determine which of two sets of instructions to execute?

A) Decision structure
B) Sequence structure
C) Nested structure
D) Do together structure
E) None of these

Answer 1

A

Question 2

Which type of structure is used to execute a set of instructions in the order in which they appear?

A) Decision structure
B) Sequence structure
C) Nested structure
D) Do together structure
E) None of these

Answer 2

B

Question 3

The expression: either a == b or a != b, or both, is always true.

Answer 3

True

Question 4

The Else part of the If/Else instruction must have at least one statement.

Question 5

Logical operators are used to compare any two numeric values.

Question 6

The If/Else instruction uses a Boolean condition to determine which set of instructions to execute.

Question 7

Relational operators are used to determine whether a specific
relationship exists between two values.

Question 8

Which type of structure has an If/Else instruction that has an empty Else part?

A) Single-alternative decision structure
B) Dual-alternative decision structure
C) Null decision structure
D) Minimum decision structure
E) None of these

Question 9

What would the penguin say if the following code were executed? If 5 == 4
Penguin say Yes
Else
Penguin say No

A) "Yes"
B) "No"
C) "Yes" then "No"
D) "No" then "Yes"
E) None of these

Question 10

What would the penguin say if the following code were executed? If 5 >= 4
Penguin say Yes
Else
Penguin say No

A) "Yes"
B) "No"
C) "Yes" then "No"
D) "No" then "Yes"
E) None of these

Question 11

What English mathematician are Boolean values named after?

A) Paul Boole
B) George Boole
C) John Boole
D) Ringo Boole
E) None of these

Question 12

The If/Else instruction cannot contain another If/Else instruction.

Question 13

Boolean expressions typically contain relational operators.

Question 14

If a = 6 and b = 6, then the expression a != b is true.

Question 15

Assuming that a = 2 and b = 3, which of the following expressions is true?

A) a > b
B) a < b
C) b <= a
D) a == b
E) None of these

Question 16

What type of operators are used to compare two numeric values?

A) Arithmetic
B) Complex
C) Logical
D) Relational
E) None of these

Question 17

Assuming that a = 1, b = 2, and c = 3, which of the following expressions is true?

A) both a < b and c < b
B) either a > b or b > c, or both
C) both b > a and b < c
D) either a == b or b == c, or both
E) None of these

Question 18

The only way that a nested If/Else instruction will execute is for the
condition of the outer If/Else instruction to be true.

Question 19

The expression: both a == b and a != b, is always false.

Question 20

What type of operators are used to join two Boolean values?

A) Arithmetic
B) Complex
C) Logical
D) Relational
E) None of these

Question 21

The If/Else decision structure uses a ___________________ condition to determine which set of instructions to execute.

Question 22

The ___________________ instruction can be used to test the value of an object's property.

Question 23

When you ___________________ a number, you drop the factional part.

Question 24

___________________ operators are used to compare two numeric values.

Question 25

___________________ operators are used to join two or more Boolean expressions.

Question 26

Assume that a = 1, b = 2, and c = 3.What is the value of the expression: either a < b or b > c, or both? ___________________

Question 27

In the ___________________-alternative decision structure the Else part is empty.

Question 28

What is the value of the expression: a == a? ___________________

Question 29

Assume that a = 1, b = 2, and c = 3.What is the value of the expression: both a < b and b > c? ___________________

Question 30

Assume that a = 3 and b = 2.What is the value of the expression: a < b? ___________________