9/13/25, 11:02 AM WGU Introduction to Computer Science D684 Workbooks (Second Attempt)
WGU D684 Introduction To Computer Science Objective Assessment
Final Exam Preparation Material 2025/2026 Complete Questions
And Correct Answers |Already Graded A+
Another way of looking at the design process, which
Object-oriented design
views a program from the standpoint of data rather
than tasks.
Produces solutions to a hierarchy of tasks, with each
Top-Down Design
task or action working upon the data passed through a
parameter list to yield a given output.
Solves a problem with self-contained object entities
Object-Oriented Design
comprising data editing data and operations, focusing
on how objects interact with a problem.
The focus: Top-down design emphasizes breaking down
Difference between top- tasks (verbs) into smaller, manageable steps, while
down design and object- object-oriented design emphasizes organizing and
oriented design structuring the data and defining how objects interact
with each other through their methods.
A paradigm that organizes software design around
Object-oriented programming objects that encapsulate attributable data and
(OOP)
associated methodical behaviors, allowing developers
to copy real-world concepts.
Blueprints for creating objects within object-oriented
Classes
programming to determine both the properties and
behaviors that an object will have.
Encapsulation Grouping both data and methods within objects.
Inheritance Making new classes from already existing ones to inherit
attributes and behaviors.
Polymorphism Objects taking on many forms based on the program's given
context.
OOP's problem-solving Produces a solution to a problem in terms of self-contained
methodology entities called objects.
How OOP helps keep code By grouping together related actions alongside data.
neat and organized
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,9/13/25, 10:23 AM Introduction to Computer Science - D684
How reusing code makes it Thanks to the neat organization of OOP and how it
easier to build on existing simultaneously groups related actions and data.
work
Means that classes act like building instructions for
Thinking of a class like a making objects that outline the attributable properties
blueprint
and methodical behaviors that each object of that type
will have.
A plan of what the objects will look like and what they
Class
can do, serving as a blueprint for creating objects.
An instance of the class with both class-defined data
Object
and methods to depict a unique entity within the
program.
An object made from a class that is a copy of a class
Instance of the class
structure that interacts independently upon other
instances.
Object-Oriented Programming, which ensures that
OOP
objects always have data and actions described within
their class due to inheritance.
The decomposition process consisting of four stages:
Design Methodology
brainstorming, filtering, scenarios, and responsibility
algorithms.
Generating a list of prospective classes that must be
Brainstorming
used to solve a problem before deciding which classes
to keep or discard.
The stage in which one reviews discovered classes to
Filtering
see if anything has been left out, can be removed, or
is missing.
The stage where the behavior of each class is
Scenarios
determined by examining all situations and
responsibilities.
Responsibility algorithms The stage of writing down the responsibilities for the classes
through algorithms.
A blueprint for creating car objects, defining fields like
Car Class
color, brand, model, engine size, and year, and
methods like start(), stop(), and drive().
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, 9/13/25, 10:23 AM Introduction to Computer Science - D684
An instance of the Car class created with specific data
MyCar Object
fields such as color = Red, brand = Jeep, model =
Wrangler Rubicon, and engine size = 6.4L HEMI V8
engine.
Properties of MyCar Attributes defined in the Car class, including color, brand, model,
and engine size.
Behaviors of MyCar Methods that the MyCar object can perform, which include
start(), stop(), and drive().
Objects communicate with one another by sending
Communication between
Objects messages, also known as invoking one another's
subprograms.
A detailed plan or design that outlines the structure and
Blueprint
behavior of objects in programming.
Attributes Properties or data fields that define the characteristics of an
object.
Functions defined in a class that describe the behaviors
Methods
or actions that an object can perform.
A mechanism in OOP that allows a class to inherit
Inheritance
properties and methods from another class.
Unique Entity An object that is distinct and identifiable within the program,
created from a class.
Data that is specified and structured within a class,
Class-defined Data
which objects of that class will possess.
A step-by-step procedure or formula for solving a
Algorithm
problem, often used in the responsibility algorithm
stage.
In the object-oriented design methodology, filtering is
Filtering when one takes the classes from the previous stage
and narrows them down even more to the more
important ones that are ensured to be used in the
next step.
/ 3/28
WGU D684 Introduction To Computer Science Objective Assessment
Final Exam Preparation Material 2025/2026 Complete Questions
And Correct Answers |Already Graded A+
Another way of looking at the design process, which
Object-oriented design
views a program from the standpoint of data rather
than tasks.
Produces solutions to a hierarchy of tasks, with each
Top-Down Design
task or action working upon the data passed through a
parameter list to yield a given output.
Solves a problem with self-contained object entities
Object-Oriented Design
comprising data editing data and operations, focusing
on how objects interact with a problem.
The focus: Top-down design emphasizes breaking down
Difference between top- tasks (verbs) into smaller, manageable steps, while
down design and object- object-oriented design emphasizes organizing and
oriented design structuring the data and defining how objects interact
with each other through their methods.
A paradigm that organizes software design around
Object-oriented programming objects that encapsulate attributable data and
(OOP)
associated methodical behaviors, allowing developers
to copy real-world concepts.
Blueprints for creating objects within object-oriented
Classes
programming to determine both the properties and
behaviors that an object will have.
Encapsulation Grouping both data and methods within objects.
Inheritance Making new classes from already existing ones to inherit
attributes and behaviors.
Polymorphism Objects taking on many forms based on the program's given
context.
OOP's problem-solving Produces a solution to a problem in terms of self-contained
methodology entities called objects.
How OOP helps keep code By grouping together related actions alongside data.
neat and organized
/ 1/28
,9/13/25, 10:23 AM Introduction to Computer Science - D684
How reusing code makes it Thanks to the neat organization of OOP and how it
easier to build on existing simultaneously groups related actions and data.
work
Means that classes act like building instructions for
Thinking of a class like a making objects that outline the attributable properties
blueprint
and methodical behaviors that each object of that type
will have.
A plan of what the objects will look like and what they
Class
can do, serving as a blueprint for creating objects.
An instance of the class with both class-defined data
Object
and methods to depict a unique entity within the
program.
An object made from a class that is a copy of a class
Instance of the class
structure that interacts independently upon other
instances.
Object-Oriented Programming, which ensures that
OOP
objects always have data and actions described within
their class due to inheritance.
The decomposition process consisting of four stages:
Design Methodology
brainstorming, filtering, scenarios, and responsibility
algorithms.
Generating a list of prospective classes that must be
Brainstorming
used to solve a problem before deciding which classes
to keep or discard.
The stage in which one reviews discovered classes to
Filtering
see if anything has been left out, can be removed, or
is missing.
The stage where the behavior of each class is
Scenarios
determined by examining all situations and
responsibilities.
Responsibility algorithms The stage of writing down the responsibilities for the classes
through algorithms.
A blueprint for creating car objects, defining fields like
Car Class
color, brand, model, engine size, and year, and
methods like start(), stop(), and drive().
/ 2/28
, 9/13/25, 10:23 AM Introduction to Computer Science - D684
An instance of the Car class created with specific data
MyCar Object
fields such as color = Red, brand = Jeep, model =
Wrangler Rubicon, and engine size = 6.4L HEMI V8
engine.
Properties of MyCar Attributes defined in the Car class, including color, brand, model,
and engine size.
Behaviors of MyCar Methods that the MyCar object can perform, which include
start(), stop(), and drive().
Objects communicate with one another by sending
Communication between
Objects messages, also known as invoking one another's
subprograms.
A detailed plan or design that outlines the structure and
Blueprint
behavior of objects in programming.
Attributes Properties or data fields that define the characteristics of an
object.
Functions defined in a class that describe the behaviors
Methods
or actions that an object can perform.
A mechanism in OOP that allows a class to inherit
Inheritance
properties and methods from another class.
Unique Entity An object that is distinct and identifiable within the program,
created from a class.
Data that is specified and structured within a class,
Class-defined Data
which objects of that class will possess.
A step-by-step procedure or formula for solving a
Algorithm
problem, often used in the responsibility algorithm
stage.
In the object-oriented design methodology, filtering is
Filtering when one takes the classes from the previous stage
and narrows them down even more to the more
important ones that are ensured to be used in the
next step.
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