Deck 12: Inheritance

Question 1

Examine the following piece of code: class Potato (Vegetable):
In a UML diagram, what would the open arrowhead point to?

A) Potato
B) Vegetable
C) class
D) Potato(Vegetable)

Answer 1

B

Question 2

Base classes are also called _____.

A) superclasses
B) derived
C) subclasses
D) classes

Answer 2

A

Question 3

Which of the following is the correct syntax for defining a class dining which inherits from class furniture?

A) class furniture(dining)
B) class dining(furniture)
C) class furniture(dining):
D) class dining(furniture):

Answer 3

D

Question 4

Each subclass has a method named __init__ that overrides the superclass's __init__.

Question 5

Which method can you use to determine whether an object is an instance of a class?

A) isinstance
B) isclass
C) isobject
D) isinheritance

Question 6

What concept involves a superclass and a subclass?

A) Polymorphism
B) Inheritance
C) Encapsulation
D) Methods

Question 7

New attributes and methods may be added to a subclass.

Question 8

What gives a program the ability to call the correct method depending on the type of object that is used to call it?

A) Polymorphism
B) Inheritance
C) Encapsulation
D) Methods

Question 9

Of the two classes Cola and Soda, which would most likely be the subclass?

A) Cola
B) Soda
C) Both
D) Either

Question 10

In the following line of code, what is the name of the base class? class Male(Human):

A) Male
B) Human
C) Either
D) Incorrect code

Question 11

_____ allows a new class to inherit the members of the class it extends.

A) Encapsulation
B) Domain
C) Methods
D) Inheritance

Question 12

It is not possible to indicate inheritance in a UML diagram.

Question 13

In the following line of code, what is the name of the subclass? class Rose(flower):

A) Rose
B) flower
C) Either
D) Incorrect code

Question 14

In an inheritance relationship, what is a specialized class called?

A) Superclass
B) Subclass
C) Object
D) Method

Question 15

What does a subclass inherit from a superclass?

A) Instances and attributes
B) Data and methods
C) Methods and instances
D) Attributes and methods

Question 16

An 'is a' relationship exists between a grasshopper and a bumblebee.

Question 17

When there are several classes that have many common data attributes, it is better to write a(n) _____ to hold all the general data.

A) superclass
B) subclass
C) object
D) method

Question 18

In a UML diagram, what does the open arrowhead point to?

A) Superclass
B) Subclass
C) Object
D) Method

Question 19

What is the relationship called in which one object is a specialized version of another object?

A) Parent-child
B) Node
C) Is a
D) Class

Question 20

When a class inherits another class, it is required to use all the data attributes and methods of the superclass.

Question 21

New attributes and methods may be added to a subclass, which makes it a(n) _______________ version of the superclass.

Question 22

_______________ allows subclasses to have methods with the same names as methods in their superclasses.

Question 23

A subclass may not override any method other than the __init__ method.

Question 24

In a UML diagram depicting inheritance, you only write the name of the subclass.

Question 25

In an inheritance relationship, the extended class is called the _______________.

Question 26

One of the ingredients of polymorphic behavior is the ability to define a method in a subclass, and then define a method with the same name in a superclass.

Question 27

A subclass is also called a(n) _______________ class.

Question 28

When a subclass method has the same name as a superclass method, it is often said that the subclass method _______________ the superclass method.

Question 29

The _______________ function determines whether an object is an instance of a specific class, or an instance of a subclass of that class.

Question 30

_______________ is used to create an 'is a' relationship among classes.

Question 31

Polymorphism works on any two class methods that have the same name.

Question 32

Superclasses are also called _______________ classes.

Question 33

A superclass inherits attributes and methods from its subclasses without any of them having to be rewritten.

Question 34

In an inheritance relationship, a television is a(n) _______________ of the electronics class.

Question 35

The term _______________ refers to an object's ability to take different forms.