Object Oriented Programming _Oop_ Concepts In Ruby MCQs with Explanations

A blueprint for objects is the correct answer to “What is a class in Ruby”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

class is the correct answer to “Which keyword is used to define a class in Ruby”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

Initializes new objects is the correct answer to “What does the initialize method do in a Ruby class”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

An instance of a class is the correct answer to “In Ruby, what is an object”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

new is the correct answer to “Which method is used to create a new instance of a class in Ruby”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

To define both reader and writer methods for class attributes is the correct answer to “What is the purpose of the attr_accessor method in Ruby classes”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

self is the correct answer to “Which keyword is used to refer to the current instance of a class in Ruby”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

To allow a class to inherit properties and behaviors from another class is the correct answer to “What is the purpose of inheritance in Ruby classes”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

The bundling of data with the methods that operate on that data is the correct answer to “What is encapsulation in Ruby classes”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

initialize is the correct answer to “Which method is called automatically when an object is created in Ruby”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

Calls the same method in the superclass is the correct answer to “What does the super keyword do in a Ruby class”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

def self.method_name is the correct answer to “Which of the following is a correct way to define a class method in Ruby”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

Adds methods from a module as class methods is the correct answer to “In Ruby, what does the extend keyword do”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

The class itself is the correct answer to “What does the self keyword refer to in Ruby classes”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

To define getter methods for class attributes is the correct answer to “What is the purpose of the attr_reader method in Ruby classes”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

self is the correct answer to “Which keyword is used to access methods and variables within the same class in Ruby”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

To define setter methods for class attributes is the correct answer to “What is the purpose of the attr_writer method in Ruby classes”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

The class from which a class inherits is the correct answer to “In Ruby, what is a superclass”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

def is the correct answer to “Which keyword is used to define an instance method in Ruby”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

initialize is the correct answer to “Which method is called when an object is garbage collected in Ruby”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

Allows access to methods within the class and its subclasses is the correct answer to “What does the protected keyword do in Ruby classes”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

To provide a new implementation for a method in the superclass is the correct answer to “What is the purpose of method overriding in Ruby”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

def self.method is the correct answer to “Which keyword is used to define a class method in Ruby”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

Calls the same method in the superclass is the correct answer to “What does the super keyword do in a Ruby class method”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

Restricts access to methods below it is the correct answer to “What is the purpose of the private keyword in Ruby classes”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

To provide multiple definitions for the same method with different parameters is the correct answer to “In Ruby, what is the purpose of method overloading”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

To define only getter methods for class attributes is the correct answer to “In Ruby, what is the purpose of the attr_reader method in a class”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

The ability for objects of different classes to be treated as objects of a common superclass is the correct answer to “What is polymorphism in Ruby”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

Class methods are called on the class itself, while instance methods are called on instances of the class is the correct answer to “What is the difference between a class method and an instance method in Ruby”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

private is the correct answer to “Which keyword is used to define a private method in a Ruby class”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

Calls the same method in the superclass is the correct answer to “In Ruby, what is the purpose of the `super` keyword when used in a method”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

Adds methods from a module as class methods is the correct answer to “What is the purpose of the `extend` keyword in Ruby classes”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

attr_accessor is the correct answer to “In Ruby, which method is used to define getter and setter methods for class attributes”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

To hide the internal state of an object and restrict access to it is the correct answer to “What is the purpose of encapsulation in Ruby classes”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.

To allow a class to inherit properties and behaviors from another class is the correct answer to “What is the purpose of inheritance in Ruby”. This question is standard in competitive examination syllabi for Object Oriented Programming _Oop_ Concepts In Ruby.