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📝 Knowledge Test

Chapter 1 Knowledge Test

Section titled “Chapter 1 Knowledge Test”
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This section contains 20 interactive knowledge checks designed to test your understanding of the materials covered in Chapter 1. The questions start with foundational concepts and gradually progress to more advanced scenarios. Take your time to think through each question.

Good luck!

Derek.

Part 1: Fundamentals of OOP

Section titled “Part 1: Fundamentals of OOP”
Q1
Quiz
Select 0/1

What is the primary way that Object-Oriented Programming (OOP) helps in managing software complexity?

By allowing developers to write everything in a single, procedural script.
By modelling software components after real-world entities using abstraction and encapsulation.
By automatically increasing the execution speed of the hardware.
By eliminating the need for variables and states.
Q2
Concept Match

Match the OOP Principle to its Definition

Drag each definition into its matching concept slot, then click Submit. Tap × to return a placed card to the pool.

Encapsulation
drag a definition here…
Inheritance
drag a definition here…
Polymorphism
drag a definition here…
Abstraction
drag a definition here…

Definition Pool

Bundling data and methods into a single unit and controlling access to the internal state.
The ability of a single interface to represent different underlying forms or behaviours.
Simplifying complex systems by focusing on essential characteristics while hiding implementation details.
A mechanism allowing a new class to inherit properties and behaviours from an existing class.
Q3
Quiz
Select 0/1

Which of the following best describes the difference between a Class and an Object?

A Class is a description or blueprint, whereas an Object is a physical or logical realisation (instance) of that description.
There is no difference; the terms are used interchangeably in C++.
A Class represents the states, while an Object represents the methods.
An Object is a blueprint, while a Class is a specific instance of that blueprint.
Q4
Concept Match

Match the Class Component to its Role

Drag each definition into its matching concept slot, then click Submit. Tap × to return a placed card to the pool.

States
drag a definition here…
Methods
drag a definition here…
Interface
drag a definition here…
Implementation
drag a definition here…

Definition Pool

The internal, hidden workings of a class, typically using private access modifiers.
Also known as functions or behaviours, delineating actions the object can perform.
Also known as attributes or data, representing the values held by the object.
The publicly accessible subset of a class's functionality exposed to the user.
Q5
Class Hierarchy

Build a Basic Animal Hierarchy

Drag class names from the pool into the slots so each class sits below its parent in the inheritance tree, then click Submit.

Inheritance Tree (base class on top)
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Available Classes

Bird
Animal
Dog
Bark
Duck
Swimming
Feather
Mammal
Beak

Part 2: Encapsulation and Relationships

Section titled “Part 2: Encapsulation and Relationships”
Q6
Quiz
Select 0/1

Which access modifiers are typically used to implement encapsulation in C++?

public for internal workings and private for the interface.
global for the interface and local for the internal implementation.
public for the interface and private for the internal implementation.
static for the interface and dynamic for the internal implementation.
Q7
Concept Match

Match the UML Concept to its Description

Drag each definition into its matching concept slot, then click Submit. Tap × to return a placed card to the pool.

UML
drag a definition here…
Class Diagram
drag a definition here…
Sequence Diagram
drag a definition here…
Use Case Diagram
drag a definition here…

Definition Pool

Shows how objects interact over time using lifelines and message arrows.
Illustrates user interactions with the system via ovals and stick figures.
A standardised visual language used to represent software design.
Shows classes, attributes, methods, and relationships using rectangles and arrows.
Q8
Class Hierarchy

Build a Computing Device Hierarchy

Drag class names from the pool into the slots so each class sits below its parent in the inheritance tree, then click Submit.

Inheritance Tree (base class on top)
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·····
·····
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Available Classes

CPU
Desktop
Server
Keyboard
PersonalComputer
OperatingSystem
Computer
Laptop
Monitor
Q9
Abstract Class Hierarchy

Build the Appliance Hierarchy

Drag class names from the pool into the slots so each class sits below its parent in the inheritance tree. Abstract classes are shown in italics with an amber accent — slots expecting an abstract class are pre-marked with «abstract». Click Submit when you're done.

Inheritance Tree (base class on top)
«abstract»
«abstract»
·····
«abstract»
·····

Available Classes

Motor
Oven
CoolingAppliance
HeatingAppliance
Appliance
Temperature
Refrigerator
Electricity
Q10
Quiz
Select 0/1

When defining the relationship between a 'Car' and an 'Engine', which of the following is correct?

A Car IS-A Engine (Inheritance).
A Car HAS-A Engine (Composition/Aggregation).
An Engine HAS-A Car (Composition/Aggregation).
An Engine IS-A Car (Inheritance).

Part 3: Polymorphism and Abstract Classes

Section titled “Part 3: Polymorphism and Abstract Classes”
Q11
Concept Match

Match the Polymorphism Term to its Description

Drag each definition into its matching concept slot, then click Submit. Tap × to return a placed card to the pool.

Overriding
drag a definition here…
Overloading
drag a definition here…
Polymorphism
drag a definition here…
Abstract Method
drag a definition here…

Definition Pool

A method declared in a base class that has no implementation and must be overridden.
A subclass provides its own implementation of a method inherited from the base class.
The general ability of a single interface to represent multiple forms.
Multiple methods in the same class share the same name but differ in their parameter lists.
Q12
Quiz
Select 0/1

Consider two methods in the same class: 'calculate(int x)' and 'calculate(float x, float y)'. What is this an example of?

Multiple Inheritance
Encapsulation
Method Overloading
Method Overriding
Q13
Abstract Class Hierarchy

Build a User Interface (UI) Component Hierarchy

Drag class names from the pool into the slots so each class sits below its parent in the inheritance tree. Abstract classes are shown in italics with an amber accent — slots expecting an abstract class are pre-marked with «abstract». Click Submit when you're done.

Inheritance Tree (base class on top)
«abstract»
«abstract»
·····
«abstract»
·····
·····

Available Classes

Container
Button
UIElement
Window
TextBox
MouseClickEvent
Theme
Control
Pixel
Q14
Quiz
Select 0/1

Which of the following statements about Abstract Classes is true?

An abstract class can be directly instantiated to create objects.
An abstract class is incomplete and cannot be instantiated directly; it must be inherited from.
An abstract class must contain all the final implementations for its methods.
An abstract class cannot contain any states or properties.
Q15
Class Hierarchy

Build an Employee Hierarchy

Drag class names from the pool into the slots so each class sits below its parent in the inheritance tree, then click Submit.

Inheritance Tree (base class on top)
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Available Classes

Salary
SeniorManager
Manager
Department
SoftwareEngineer
Project
Engineer
Office
Employee

Part 4: Advanced Scenarios and Conventions

Section titled “Part 4: Advanced Scenarios and Conventions”
Q16
Concept Match

Match the Code Case Convention to its Example

Drag each definition into its matching concept slot, then click Submit. Tap × to return a placed card to the pool.

Camel Case
drag a definition here…
Pascal Case
drag a definition here…
Snake Case
drag a definition here…
Screaming Snake Case
drag a definition here…
Kebab Case
drag a definition here…

Definition Pool

calculate_total_amount
user-profile-image
TemperatureSensor
MAX_ARRAY_SIZE
calculateTotalAmount
Q17
Abstract Class Hierarchy

Build a Media Library Hierarchy

Drag class names from the pool into the slots so each class sits below its parent in the inheritance tree. Abstract classes are shown in italics with an amber accent — slots expecting an abstract class are pre-marked with «abstract». Click Submit when you're done.

Inheritance Tree (base class on top)
«abstract»
«abstract»
·····
«abstract»
·····
·····

Available Classes

Page
Movie
Library
MediaItem
Duration
Volume
AudioTrack
PlayableMedia
Book
ReadableMedia
Q18
Quiz
Select 0/1

If a derived class 'EstateCar' defines a 'draw()' method that replaces the 'draw()' method inherited from the 'Car' class, what OOP feature is being used?

Overriding
Overloading
Multiple Inheritance
Encapsulation
Q19
Abstract Class Hierarchy

Build a Network Device Hierarchy

Drag class names from the pool into the slots so each class sits below its parent in the inheritance tree. Abstract classes are shown in italics with an amber accent — slots expecting an abstract class are pre-marked with «abstract». Click Submit when you're done.

Inheritance Tree (base class on top)
«abstract»
«abstract»
·····
·····
«abstract»
·····

Available Classes

Bandwidth
MacAddress
EdgeRouter
NetworkDevice
IPAddress
Node
DataPacket
ActuatorNode
SensorNode
Gateway
Q20
Class Hierarchy

Build a Document Hierarchy

Drag class names from the pool into the slots so each class sits below its parent in the inheritance tree, then click Submit.

Inheritance Tree (base class on top)
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·····
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Available Classes

Font
FileSize
Invoice
Spreadsheet
Document
TextDocument
Printer
Report
Margin

Congratulations on completing the Chapter 1 Knowledge Test! Review any questions you missed to ensure a solid foundation in Object-Oriented Programming principles before moving on to the next chapter.

© 2026 Derek Molloy, Dublin City University. All rights reserved.