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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 eliminating the need for variables and states.
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.
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

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.
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.
Q3
Quiz
Select 0/1

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

A Class represents the states, while an Object represents the methods.
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++.
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

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.
The internal, hidden workings of a class, typically using private access modifiers.
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

Feather
Duck
Animal
Swimming
Mammal
Beak
Bark
Bird
Dog

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++?

global for the interface and local for the internal implementation.
public for internal workings and private for the interface.
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

Illustrates user interactions with the system via ovals and stick figures.
A standardised visual language used to represent software design.
Shows how objects interact over time using lifelines and message arrows.
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)
·····
·····
·····
·····
·····

Available Classes

Server
PersonalComputer
CPU
OperatingSystem
Computer
Monitor
Laptop
Keyboard
Desktop
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

Oven
Appliance
HeatingAppliance
Temperature
Motor
CoolingAppliance
Electricity
Refrigerator
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 IS-A Car (Inheritance).
An Engine HAS-A Car (Composition/Aggregation).

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

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

Method Overriding
Encapsulation
Method Overloading
Multiple Inheritance
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

Button
UIElement
TextBox
MouseClickEvent
Window
Container
Theme
Pixel
Control
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 must contain all the final implementations for its methods.
An abstract class is incomplete and cannot be instantiated directly; it must be inherited from.
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

Employee
Engineer
SoftwareEngineer
SeniorManager
Salary
Department
Project
Manager
Office

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

MAX_ARRAY_SIZE
calculateTotalAmount
TemperatureSensor
user-profile-image
calculate_total_amount
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

ReadableMedia
Library
MediaItem
Book
Duration
PlayableMedia
Page
AudioTrack
Movie
Volume
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?

Multiple Inheritance
Encapsulation
Overriding
Overloading
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

Gateway
Bandwidth
DataPacket
EdgeRouter
MacAddress
ActuatorNode
SensorNode
Node
IPAddress
NetworkDevice
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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·····
·····
·····
·····

Available Classes

Invoice
Margin
Printer
TextDocument
Font
Spreadsheet
Document
Report
FileSize

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.