Deck 10: Classes and Object-Oriented Programming

Question 1

Object-oriented programming allows us to hide the object's data attributes from code that is outside the object.

Answer 1

True

Question 2

Which section in the UML holds the list of the class's methods?

A) first section
B) second section
C) third section
D) fourth section

Answer 2

C

Question 3

Procedures operate on data items that are separate from the procedures.

Answer 3

True

Question 4

The self parameter need not be named self but it is strongly recommended to do so,to conform with standard practice.

Question 5

Which method is automatically called when you pass an object as an argument to the print function?

A) __state__
B) __obj__
C) __str__
D) __init__

Question 6

Which method is automatically executed when an instance of a class is created in memory?

A) __state__
B) __obj__
C) __str__
D) __init__

Question 7

All class definitions are stored in the library so that they can be imported into any program.

Question 8

All instances of a class share the same values of the data attributes in the class.

Question 9

A class can be thought of as a blueprint that can be used to create an object.

Question 10

What type of method provides a safe way for code outside a class to retrieve the values of attributes,without exposing the attributes in a way that could allow them to be changed by code outside the method?

A) accessor
B) mutator
C) setter
D) class

Question 11

Which section in the UML holds the list of the class's data attributes?

A) first section
B) second section
C) third section
D) fourth section

Question 12

A mutator method has no control over the way that a class's data attributes are modified.

Question 13

Which attributes belong to a specific instance of a class?

A) instance
B) self
C) object
D) data

Question 14

What is the special name given to the method that returns a string containing an object's state?

A) __state__
B) __obj__
C) __str__
D) __init__

Question 15

What does the acronym UML stand for?

A) Unified Modeling Language
B) United Modeling Language
C) Unified Model Language
D) Union of Modeling Languages

Question 16

What type of programming contains class definitions?

A) procedural
B) top-down
C) object-oriented
D) modular

Question 17

In a UML diagram the first section holds the list of the class's methods.

Question 18

The procedures that an object performs are called

A) methods
B) actions
C) modules
D) instances

Question 19

The self parameter is required in every method of a class.

Question 20

An object is a stand-alone program but is used by programs that need its service.

Question 21

Which of the following can be thought of as a self-contained unit that consists of data attributes and the methods that operate on the data attributes?

A) a class
B) an object
C) an instance
D) a module

Question 22

The instance attributes are created by the __________ parameter and they belong to a specific instance of the class.

Question 23

In object-oriented programming,one of first tasks of the programmer is to

A) list the nouns in the problem
B) list the methods that are needed
C) identify the classes needed
D) identify the objects needed

Question 24

Mutator methods are also known as

A) setters
B) getters
C) instances
D) attributes

Question 25

In ___________ programming,the programming is centered on objects that are created from abstract data types that encapsulate data and functions together.

Question 26

Combining data and code in a single object is known as

A) modularity
B) instantiation
C) encapsulation
D) objectification

Question 27

A class __________ is a set of statements that defines a class's methods and data attributes.

Question 28

An object's __________ contains the values of the object's attributes at a given moment.

Question 29

Each object that is created from a class is called a(n)__________ of the class.

Question 30

___________ provides a set of standard diagrams for graphically depicting object-oriented systems.

Question 31

When an object is passed as an argument,__________ is passed into the parameter variable.

A) a copy of the object
B) a reference to the object's state
C) a reference to the object
D) Objects cannot be passed as arguments.

Question 32

A method that returns a value from a class's attribute but does not change it is known as a(n)__________ method.

Question 33

___________ programming is a method of writing software that centers on the actions that take place in a program.

Question 34

A(n)__________ method in a class initializes an object's data attributes.

Question 35

Which is the first line needed when creating a class named Worker?

A) def__init__(self):
B) class Worker:
C) import random
D) def worker_pay(self):

Question 36

Accessor methods are also known as

A) setters
B) getters
C) instances
D) attributes

Question 37

A(n)__________ is code that specifies the data attributes and methods for a particular type of object.

Question 38

Which of the following will create an object,worker_joey,of the Worker class?

A) def__init__(worker_joey):
B) class worker_joey:
C) worker_joey = Worker()
D) worker_joey.Worker