Deck 11: Inheritance

Question 1

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

Answer 1

True

Question 2

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

Answer 2

A

Question 3

An "is a" relationship exists between a wrench and a tool.

Answer 3

True

Question 4

New attributes and methods may be added to a subclass.

Question 5

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

Question 6

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

Question 7

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

Question 8

One problem with using a UML diagram is that there is no way to indicate inheritance.

Question 9

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

A) a superclass
B) a subclass
C) an object
D) an instance

Question 10

Base classes are also called

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

Question 11

What does a subclass inherit from a superclass?

A) instances and attributes
B) objects and methods
C) methods and instances
D) attributes and methods

Question 12

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 13

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

Question 14

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

Question 15

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

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

Question 16

__________ has the ability to define a method in a subclass and then define a method with the same name in a superclass.

A) Inheritance
B) Encapsulation
C) Polymorphism
D) the 'is a' relationship

Question 17

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

A) Rose
B) Flower
C) Rose(Flower)
D) None of these

Question 18

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

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

Question 19

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

Question 20

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

A) parent-child
B) node-to-node
C) is a
D) class-subclass

Question 21

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

A) class furniture[table]:
B) class table.furniture:
C) class furniture(table):
D) class table(furniture):

Question 22

A superclass is also called a(n)__________ class.

Question 23

In a UML diagram,a line with an open arrowhead from a subclass to a superclass indicates ___________.

Question 24

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

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

Question 25

In an inheritance relationship,a minivan can be thought of as a(n)___________ of the vehicles class.

Question 26

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

Question 27

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

Question 28

Of the two classes,Cherry and Flavor,which would most likely be the subclass?

A) Cherry
B) Flavor
C) either one
D) neither; these are inappropriate class or subclass names

Question 29

When a subclass method has the same name as a superclass method,the subclass method __________ the superclass method.

Question 30

The __________ function determines whether or not an object is an instance of a specific class or an instance of a subclass of that class.

Question 31

Given the following beginning of a class definition for a superclass named clock,how many accessor and mutator methods will be needed to complete the class definition?

A) 1 mutator, 1 accessor
B) 3 mutator, 4 accessor
C) 3 mutator, 3 accessor
D) 4 mutator, 5 accessor

Question 32

Given the following line of code,in a UML diagram,what would the open arrowhead point to?
Class Celery(Vegetable):

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

Question 33

In the following line of code,what is the name of the base class?
Class Python(Course):

A) Python
B) Course
C) Python(Course)
D) None of these

Question 34

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

Question 35

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

Question 36

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