Object-Oriented Programming Quizzes for Year 11 Computing Students

Question 1

Which of the following is a key feature of object-oriented programming?

Accepted Answer

Data encapsulation within objects

Answer

Focus on procedural flow

Answer

Rigid adherence to top-down design

Answer

Execution flow that is strictly linear

Question 2

Which of the following is not a core principle of object-oriented programming?

Accepted Answer

Recursion

Answer

Encapsulation

Answer

Polymorphism

Answer

Inheritance

Question 3

Which of the following is NOT considered a core pillar of object-oriented programming (OOP)?

Accepted Answer

Concurrency

Answer

Abstraction

Answer

Encapsulation

Answer

Polymorphism

Question 4

What is the primary purpose of a getter method in object-oriented programming?

Accepted Answer

To retrieve the value of a private variable

Answer

To set the value of a private variable

Answer

To create a new object

Answer

To delete an object

Question 5

Which type of inheritance involves creating a new class with its own unique attributes and methods, while inheriting properties from a single parent class?

Accepted Answer

Single inheritance

Answer

Multiple inheritance

Answer

Hierarchical inheritance

Question 6

What term describes a situation where a method in a subclass has the same name and arguments as a method in its superclass, and the subclass method overrides the behavior of the superclass method?

Accepted Answer

Overriding

Answer

Overloading

Answer

Method hiding

Question 7

What is the term for a block of code within a class that defines actions or behaviors that the objects of that class can perform?

Accepted Answer

Method

Answer

Class

Answer

Object

Answer

Attribute

Question 8

What is the primary purpose of an interface in object-oriented programming?

Accepted Answer

To define a set of methods that classes implementing the interface must provide

Answer

To create a new class

Answer

To inherit from another class

Answer

To encapsulate data

Question 9

What is the term for a method that overrides a method in a superclass?

Accepted Answer

Overriding method

Answer

Redefined method

Answer

Virtual method

Answer

Abstract method

Question 10

What is the primary purpose of a package in Java?

Accepted Answer

To group related classes and interfaces

Answer

To control access to classes and interfaces

Answer

To provide documentation for classes and interfaces

Answer

To improve performance of classes and interfaces

Question 11

What is a primary advantage of using object-oriented programming?

Accepted Answer

Enhanced code reusability

Answer

Increased code efficiency

Answer

Simplified code structure

Answer

Improved portability across platforms

Question 12

Which characteristic is NOT associated with object-oriented programming?

Accepted Answer

Concurrent Execution

Answer

Encapsulation

Answer

Inheritance

Answer

Polymorphism

Question 13

What is the process of creating a new object based on an existing class referred to as?

Accepted Answer

Instantiation

Answer

Inheritance

Answer

Encapsulation

Answer

Polymorphism

Question 14

Which type of inheritance allows a derived class to inherit properties and methods from multiple parent classes?

Accepted Answer

Multiple inheritance

Answer

Single inheritance

Answer

Hierarchical inheritance

Answer

Hybrid inheritance

Question 15

In Java, what is the primary purpose of the 'this' keyword?

Accepted Answer

To refer to the current object instance

Answer

To invoke the constructor of the current class

Answer

To access private members of the current class

Answer

To create a new instance of the current class

Question 16

What is the fundamental purpose of polymorphism in object-oriented programming?

Accepted Answer

To enable objects of different classes to respond differently to the same message

Answer

To create new classes without altering existing ones

Answer

To enhance code efficiency

Answer

To reduce code duplication

Question 17

Identify an example of a constructor in Java.

Accepted Answer

public MyClass() {}

Answer

private void init() {}

Answer

protected int calculate() {}

Answer

static String getName() {}

Question 18

What is the primary function of access modifiers (e.g., public, private) in Java?

Accepted Answer

To control the accessibility of classes, methods, and variables

Answer

To enhance code organization

Answer

To improve code security

Answer

To increase code readability

Question 19

Which of the core concepts of object-oriented programming involves defining a blueprint for creating objects?

Accepted Answer

Classes

Answer

Methods

Answer

Inheritance

Answer

Polymorphism

Question 20

What is the term for the process of creating a new instance of a class?

Accepted Answer

Instantiation

Answer

Initialization

Answer

Inheritance

Answer

Polymorphism

Question 21

What is the key distinction between a class and an object in object-oriented programming?

Accepted Answer

A class is a template, while an object is an instance of that template

Answer

An object is a template, while a class is an instance of that template

Answer

A class and an object are interchangeable concepts

Answer

An object is a subclass, while a class is a superclass

Question 22

What is the primary purpose of encapsulation in object-oriented programming?

Accepted Answer

To conceal implementation details and maintain data integrity

Answer

To enhance code readability and simplify debugging

Answer

To improve code performance and efficiency

Answer

To facilitate code reusability and modularity

Question 23

What is the purpose of a constructor in object-oriented programming?

Accepted Answer

To initialize an object's properties and set its initial state

Answer

To define an object's methods and their functionality

Answer

To control an object's access modifiers and visibility

Answer

To create a new class and define its characteristics

Question 24

In OOP, the 'public' access modifier in a class definition permits access to:

Accepted Answer

From anywhere in the program

Answer

Only within the class

Answer

Only within the package

Answer

Only from subclasses

Question 25

To inherit from a superclass in Java, the correct syntax is:

Accepted Answer

extend Superclass

Answer

implements Superclass

Answer

inherits Superclass

Answer

from Superclass

Question 26

Polymorphism in OOP allows objects to:

Accepted Answer

Exhibit different behaviors based on their class

Answer

Access private members of their parent class

Answer

Be instantiated with varying data

Answer

Be compared to objects of other classes

Question 27

What is the fundamental difference between a class and an object?

Accepted Answer

A class is a blueprint for creating objects, while an object is an instance of a class

Answer

A class is an object, while an object is a blueprint for creating classes

Answer

There is no difference between a class and an object

Answer

An object is a blueprint for creating classes, while a class is an instance of an object

Question 28

What is the purpose of the @Override annotation in Java?

Accepted Answer

To indicate that a method is overriding a method from a superclass

Answer

To prevent a method from being overridden

Answer

To mark a method as final

Answer

To indicate that a method is abstract

Question 29

What is the primary purpose of an abstract class?

Accepted Answer

To force subclasses to implement certain methods

Answer

To provide a common definition for a group of related classes

Answer

To prevent a class from being instantiated

Answer

To allow a class to have multiple superclasses

Question 30

What is the process of creating a new instance of an object from an existing class called?

Accepted Answer

Instantiation

Answer

Inheritance

Answer

Casting

Answer

Overloading

Question 31

What is the ability of an object to take on different forms called?

Accepted Answer

Polymorphism

Answer

Encapsulation

Answer

Abstraction

Answer

Encapsulation

Question 32

What is the purpose of the 'this' keyword in Java?

Accepted Answer

To refer to the current object

Answer

To call a method on the current object

Answer

To access the class variables of the current object

Answer

To create a new object

Question 33

What is the purpose of using an 'interface' in Java?

Accepted Answer

To define a contract that a class must implement

Answer

To create a new type of object

Answer

To inherit from a base class

Answer

To encapsulate data and methods

Question 34

What is the purpose of using a 'constructor' in Java?

Accepted Answer

To initialise the state of an object

Answer

To define the behaviour of an object

Answer

To create a new instance of an object

Answer

To access the data members of an object

Question 35

Which of the following is NOT a fundamental feature of object-oriented programming?

Accepted Answer

Recursion

Answer

Encapsulation

Answer

Inheritance

Answer

Polymorphism

Question 36

What is the main purpose of a constructor in an object-oriented program?

Accepted Answer

Initializing the object's attributes

Answer

Defining the object's behavior

Answer

Creating a new instance of the object

Answer

Terminating the object's existence

Question 37

What is the relationship between a superclass and a subclass in object-oriented programming?

Accepted Answer

The subclass inherits from the superclass

Answer

The superclass is a specialization of the subclass

Answer

The subclass is a generalization of the superclass

Answer

The superclass and subclass are unrelated

Question 38

What is the primary purpose of using the 'this' keyword in Java?

Accepted Answer

Referring to the current object

Answer

Accessing static members of a class

Answer

Creating new objects

Answer

Passing objects as arguments to methods

Question 39

Which of the following is NOT a fundamental characteristic of object-oriented programming?

Accepted Answer

Procedural programming

Answer

Encapsulation

Answer

Inheritance

Answer

Polymorphism

Question 40

A class defines the structure and behavior of an object. What is the purpose of defining a class?

Accepted Answer

To create a blueprint for creating objects with specific attributes and behaviors

Answer

To store data about a specific object

Answer

To perform actions on a specific object

Answer

To create multiple copies of an existing object

Question 41

Polymorphism enables objects to:

Accepted Answer

Respond differently to the same method call based on their class

Answer

Be created with different data types and values

Answer

Access private members of their parent class

Answer

Override inherited methods without affecting the parent class

Question 42

Which access modifier allows a class member (field or method) to be accessed by any code in the program?

Accepted Answer

Public

Answer

Private

Answer

Protected

Answer

Internal

Question 43

What is the primary purpose of an abstract class?

Accepted Answer

To define common functionality that can be inherited and implemented by subclasses

Answer

To create objects that cannot be instantiated

Answer

To prevent inheritance of certain methods

Answer

To provide a default implementation for all methods