Week 10

Question 1

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

Answer 1

False

Question 2

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

Answer 2

False

Question 3

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

Answer 3

True

Question 4

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

Answer 4

True

Question 5

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

Answer 5

False

Question 6

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

Answer 6

False

Question 7

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

Answer 7

True

Question 8

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

Question 9

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

Question 10

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

Question 11

What does the acronym UML stand for?
a. Unified Modeling Language
b. United Modeling Language
c. Unified Model Language
d. Union of Modeling Languages

Answer 11

Unified modeling language

Question 12

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

Answer 12

second section

Question 13

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 13

third section

Question 14

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

Answer 14

accessors

Question 15

The procedures that an object performs are called
a. methods
b. actions
c. modules
d. instances

Answer 15

methods

Question 16

Which attributes belong to a specific instance of a class?
a. instance
b. self
c. object
d. data

Answer 16

instance

Question 17

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__

Answer 17

__str__

Question 18

Which method is automatically executed when an instance of a class is created in memory?
a. __state__
b. __obj__
c. __str__
d. __init__

Answer 18

__init__

Question 19

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__

Answer 19

__str__

Question 20

What type of programming contains class definitions?
a. procedural
b. top-down
c. object-oriented
d. modular

Answer 20

object-oriented

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

Answer 21

an object

Question 22

Combining data and code in a single object is known as
a. modularity
b. instantiation
c. encapsulation
d. objectification

Answer 22

encapsulation

Question 23

Mutator methods are also known as
a. setters
b. getters
c. instances
d. attributes

Answer 23

setters

Question 24

Accessor methods are also known as
a. setters
b. getters
c. instances
d. attributes

Answer 24

getters

Question 25

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 26

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 27

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 28

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

Question 29

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

Answer 29

class

Question 30

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

Answer 30

instance

Question 31

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

Answer 31

definition

Question 32

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

Answer 32

initializer

Question 33

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

Answer 33

state

Question 34

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

Answer 34

instance

Question 35

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

Answer 35

accessor

Question 36

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

Answer 36

object-oriented

Question 37

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

Answer 37

procedural

Question 38

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

Answer 38

UML

Question 39

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