Given the following hierarchy, which class is considered the base class?

class GeometricShape :

. . .

class Line(GeometricShape) :

. . .

class Rectangle(GeometricShape) :

. . .

class Square(Rectangle) :

. . .

Question options:

	Square
	Rectangle
	Line
	GeometricShape
Question 6		0 / 1 point

Consider the following code segment:

class Fruit :

def __init__(self, name) :

. . .

class Apple :

def __init__self(self, name) :

. . .

Which statement successfully creates a new Apple object?

Question options:

	x = Fruit()
	x = Fruit("Apple")
	x = Apple()
	x = Apple("McIntosh")
Question 7		0 / 1 point

What does the subclass inherit from a superclass?

Question options:

	Data and behavior
	Only behaviors
	Only data
	Nothing
Question 9		0 / 1 point

Consider the following code snippet:

class Vehicle :

. . .

def setVehicleAttributes(self) :

. . .

class Auto(Vehicle) :

. . .

def setVehicleAttributes(self)

. . .

Which of the following statements is correct?

Question options:

	The subclass is overloading a superclass method.
	The subclass is overriding a superclass method.
	This subclass is referencing a superclass method.
	The subclass is shadowing a superclass method.
Question 10		0 / 1 point

What type of method is used to extend or replace the functionality of the superclass method?

Question options:

	Concrete method
	Abstract method
	Overriding method
	Constructor method

Given the code snippet below, what instance variables does an object of the Rectangle class have?

class GeometricShape :

def __init__(self, x, y) :

self._x = x

self._y = y

self._fill = None

self._outline = "blue"

. . .

class Rectangle(GeometricShape) :

def __init__(self, x, y, width, height) :

super().__init__(x, y)

self._width = width

self._height = height

. . .

Question options:

	_x, _y, _width, _height, _fill, _outline
	_x, _y, _width, _height
	_x, _y
	_width, _height
Question 3		0 / 1 point

If a class has an abstract method, which of the following statements is NOT true?

Question options:

	You cannot inherit from this class.
	You cannot construct an object from this class.
	You can construct an object from this class.
	All non-abstract subclasses of this class must implement this method.

What is dynamic method lookup?

Question options:

	Dynamic method lookup is the process of determining, at runtime, what method will be invoked based on the type of the object.
	Dynamic method lookup is the process of finding a method amongst a collection of classes that do not have a common superclass (other than object).
	Dynamic method lookup is the process of finding a method in a superclass when it has not been overridden in a subclass.
	Dynamic method lookup is the process of overriding a method in a subclass that has already been defined in the superclass.
Question 7		0 / 1 point

Given the code snippet below, what methods does an object of the Rectangle class have?

class GeometricShape :

def __init__(self, x, y) :

self._x = x

self._y = y

self._fill = None

self._outline = "blue"

. . .

def getX(self) :

return self._x

def getY(self) :

return self._y

class Rectangle(GeometricShape) :

def __init__(self, x, y, width, height) :

super().__init__(x, y)

self._width = width

self._height = height

def getWidth(self) :

return self._width

def getHeight(self) :

return self._height

Question options:

	getWidth(), getHeight()
	getX(), getY(), getWidth(), getHeight()
	getX(), getY(), setColor()
	getX(), getY(), getWidth(), getHeight()
Question 8		0 / 1 point

What is wrong with the following classes?

class Person :

. . .

def getName(self) :

return self._name

. . .

class Physician(Person) :

. . .

def getName(self) :

return "Dr. " + self.getName()

. . .

Question options:

	The return statement cannot include string concatenation
	The Physician class cannot contain a method named getName
	The body of the getName method in Physician contains a logic error
	Physician is not a subclass of Person
Question 10		0 / 1 point

Consider the following classes:

class Vehicle :

def __init__(self, type) :

self._type = type

def getType(self) :

return self._type

class LandVehicle(Vehicle) :

def __init__(self, type) :

super().__init__(type)

class Auto(LandVehicle) :

def __init__(self, type) :

super().__init__(type)

What is displayed by the following code segment?

x = Auto("Sedan")

print(x.getType())

Question options:

	Auto
	Sedan
	Vehicle
	A runtime error occurs

Question 10

Consider the following code segment:

class Fruit :

def __init__(self, name) :

. . .

class Apple :

def __init__self(self, name) :

. . .

Which statement successfully creates a new Apple object?

Question options:

	x = Fruit()
	x = Fruit("Apple")
	x = Apple()
	x = Apple("McIntosh")
Question 3			0 / 1 point

You have been asked to write a program that involves animals. Some animals are herbivores. Within this program, any animal that is not a herbivore is a carnivore. Which set of class definitions is most appropriate for this program?

Question options:

	class Animal : . . . class Herbivore(Animal) : . . . class Carnivore(Herbivore) : . . .
	class Animal : . . . class Carnivore(Animal) : . . . class Herbivore(Carnivore) : . . .
	class Animal : . . . class Herbivore(Animal) : . . . class Carnivore(Animal) : . . .
	class Animal(Herbivore, Carnivore) : . . . class Herbivore : . . . class Carnivore : . . .
Question 4		0 / 1 point

Consider the following classes:

class Vehicle :

def __init__(self, name) :

self._name = name

class LandVehicle(Vehicle) :

def __init__(self, numWheels) :

super().__init__("Land Vehicle")

____________________

def getWheels(self) :

return self._numWheels

What statement should be placed in the blank to complete the constructor for LandVehicle?

Question options:

	_numWheels = numWheels
	self._numWheels = numWheels
	super()._numWheels = numWheels
	super().__init__(numWheels)
Question 5		0 / 1 point

A class name inside parentheses in the class header indicates that the:

Question options:

	class inherits from a default class
	class inherits from a superclass
	class inherits from a subclass
	class inherits from the object class
Question 6		0 / 1 point

You are creating a Motorcycle class which is supposed to inherit from the Vehicle class. Which of the following class declaration statements will accomplish this?

Question options:

	class Motorcycle(self) :
	class Motorcycle extends Vehicle :
	class Motorcycle is Vehicle :
	class Motorcycle(Vehicle) :
Question 7		0 / 1 point

What object oriented programming concept can often be used to eliminate explicit type tests?

Question options:

	Class variables
	Encapsulation
	Functions
	Polymorphism
Question 8		0 / 1 point

Insert the missing code in the following code fragment. This fragment is intended to call the Vehicle class's method.

class Vehicle :

def setVehicleClass(self, numberAxles) :

...

class Motorcycle(Vehicle) :

def __init__(self) :

__________________

harley = Motorcycle()

Question options:

	self.setVehicleClass(2)
	setVehicleClass(2)
	Motorcycle.setVehicleClass(2)
	Vehicle.setVehicleClass(2)
Question 9		0 / 1 point

Consider the following program:

class Dinosaur :

def __init__(self, name="dinosaur") :

self._name = name

def display(self) :

print(self._name)

class Triceratops(Dinosaur) :

def __init__(self) :

super().__init__("triceratops")

x = Triceratops()

x.display()

What is displayed when it executes?

Question options:

	dinosaur
	triceratops
	Nothing is displayed
	The program crashes with a method not implemented error
Question 10		0 / 1 point

Which of the following statements about inheritance is correct?

Question options:

	You can always use a superclass object in place of a subclass object.
	You can always use a subclass object in place of a superclass object.
	A superclass inherits data and behavior from a subclass.
	A superclass inherits only behavior from a subclass.