📝 Knowledge Test

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.

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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?

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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.

By allowing developers to write everything in a single, procedural script.

Submit Answer

Q2

Concept Match

Match the OOP Principle to its Definition

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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.

A mechanism allowing a new class to inherit properties and behaviours from an existing class.

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.

Submit

Q3

Quiz

Select 0/1

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

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An Object is a blueprint, while a Class is a specific instance of that blueprint.

There is no difference; the terms are used interchangeably in C++.

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.

Submit Answer

Q4

Concept Match

Match the Class Component to its Role

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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 attributes or data, representing the values held by the object.

Also known as functions or behaviours, delineating actions the object can perform.

The publicly accessible subset of a class's functionality exposed to the user.

Submit

Q5

Class Hierarchy

Build a Basic Animal Hierarchy

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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

Mammal

Duck

Animal

Feather

Swimming

Beak

Dog

Bark

Bird

Submit

Part 2: Encapsulation and Relationships

Q6

Quiz

Select 0/1

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

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public for the interface and private for the internal implementation.

static for the interface and dynamic for the internal implementation.

public for internal workings and private for the interface.

global for the interface and local for the internal implementation.

Submit Answer

Q7

Concept Match

Match the UML Concept to its Description

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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.

Submit

Q8

Class Hierarchy

Build a Computing Device Hierarchy

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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

Laptop

Monitor

Desktop

CPU

Computer

OperatingSystem

Server

Keyboard

PersonalComputer

Submit

Q9

Abstract Class Hierarchy

Build the Appliance Hierarchy

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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»

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«abstract»

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Available Classes

Temperature

Oven

CoolingAppliance

HeatingAppliance

Refrigerator

Electricity

Appliance

Motor

Submit

Q10

Quiz

Select 0/1

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

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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).

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Part 3: Polymorphism and Abstract Classes

Q11

Concept Match

Match the Polymorphism Term to its Description

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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

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.

The general ability of a single interface to represent multiple forms.

Submit

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?

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Method Overloading

Multiple Inheritance

Method Overriding

Encapsulation

Submit Answer

Q13

Abstract Class Hierarchy

Build a User Interface (UI) Component Hierarchy

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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»

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«abstract»

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Available Classes

UIElement

Theme

Pixel

Control

Container

Button

MouseClickEvent

TextBox

Window

Submit

Q14

Quiz

Select 0/1

Which of the following statements about Abstract Classes is true?

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An abstract class cannot contain any states or properties.

An abstract class is incomplete and cannot be instantiated directly; it must be inherited from.

An abstract class can be directly instantiated to create objects.

An abstract class must contain all the final implementations for its methods.

Submit Answer

Q15

Class Hierarchy

Build an Employee Hierarchy

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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

Office

Employee

SoftwareEngineer

Department

Project

SeniorManager

Engineer

Manager

Submit

Part 4: Advanced Scenarios and Conventions

Q16

Concept Match

Match the Code Case Convention to its Example

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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

calculateTotalAmount

user-profile-image

MAX_ARRAY_SIZE

TemperatureSensor

Submit

Q17

Abstract Class Hierarchy

Build a Media Library Hierarchy

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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»

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«abstract»

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Available Classes

MediaItem

ReadableMedia

Volume

Movie

Book

Library

PlayableMedia

AudioTrack

Duration

Page

Submit

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?

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Overloading

Multiple Inheritance

Overriding

Encapsulation

Submit Answer

Q19

Abstract Class Hierarchy

Build a Network Device Hierarchy

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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»

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Available Classes

Gateway

ActuatorNode

Node

IPAddress

DataPacket

SensorNode

Bandwidth

NetworkDevice

EdgeRouter

MacAddress

Submit

Q20

Class Hierarchy

Build a Document Hierarchy

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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

Spreadsheet

Document

TextDocument

Report

FileSize

Margin

Printer

Invoice

Font

Submit

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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.