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📝 Knowledge Test

Chapter 1 Knowledge Test

Section titled “Chapter 1 Knowledge Test”
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Knowledge Test Score Board
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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 modelling software components after real-world entities using abstraction and encapsulation.
By eliminating the need for variables and states.
By allowing developers to write everything in a single, procedural script.
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?

An Object is a blueprint, while a Class is a specific instance of that blueprint.
A Class is a description or blueprint, whereas an Object is a physical or logical realisation (instance) of that description.
A Class represents the states, while an Object represents the methods.
There is no difference; the terms are used interchangeably in C++.
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 publicly accessible subset of a class's functionality exposed to the user.
Also known as attributes or data, representing the values held by the object.
The internal, hidden workings of a class, typically using private access modifiers.
Also known as functions or behaviours, delineating actions the object can perform.
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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·····
·····
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Available Classes

Beak
Mammal
Swimming
Bark
Animal
Bird
Dog
Duck
Feather

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.
static for the interface and dynamic for the internal implementation.
global for the interface and local for the internal implementation.
public for the interface and private 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 classes, attributes, methods, and relationships using rectangles and arrows.
Illustrates user interactions with the system via ovals and stick figures.
Shows how objects interact over time using lifelines and message arrows.
A standardised visual language used to represent software design.
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

Computer
CPU
Monitor
Keyboard
OperatingSystem
Desktop
Server
Laptop
PersonalComputer
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

HeatingAppliance
Appliance
CoolingAppliance
Electricity
Oven
Refrigerator
Motor
Temperature
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).
An Engine HAS-A Car (Composition/Aggregation).
An Engine IS-A Car (Inheritance).
A Car HAS-A Engine (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.
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.
A method declared in a base class that has no implementation and must be overridden.
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

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

Which of the following statements about Abstract Classes is true?

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

Department
Salary
Project
Office
Manager
SeniorManager
Employee
SoftwareEngineer
Engineer

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
user-profile-image
calculateTotalAmount
TemperatureSensor
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
MediaItem
Library
Volume
Page
AudioTrack
Book
Movie
PlayableMedia
Duration
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

Gateway
SensorNode
MacAddress
IPAddress
ActuatorNode
Bandwidth
EdgeRouter
DataPacket
Node
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

Margin
Spreadsheet
Font
FileSize
Printer
Document
TextDocument
Report
Invoice

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.