Object Oriented Programming (OOP) Concepts in Ruby MCQ question and answer with solution

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Learn Object Oriented Programming (OOP) Concepts in Ruby MCQ Questions and answers with easy and logical explanations in Ruby Programming. Object Oriented Programming (OOP) Concepts in Ruby MCQ question provides all type of technical mcq questions which is important for technical exams, campus exams and other entrance examination. Page-3 section-1

Which method is called when an object is garbage collected in Ruby?

A) finalize B) destroy C) free D) initialize

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

What does the protected keyword do in Ruby classes?

A) Allows access to methods within the class and its subclasses B) Restricts access to methods below it C) Allows access to methods from outside the class D) None of the above

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

What is the purpose of method overriding in Ruby?

A) To provide a new implementation for a method in the superclass B) To hide a method from the superclass C) To create a new method in the subclass D) To provide access to private methods

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Which keyword is used to define a class method in Ruby?

A) class_method B) self.method C) def self.method D) method

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Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

What is the purpose of the extend keyword in Ruby?

A) Adds methods from a module as class methods B) Adds methods from a module as instance methods C) Initializes a new instance of a class D) Calls a superclass method

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

What does the super keyword do in a Ruby class method?

A) Calls the same method in the superclass B) Calls the same method in the subclass C) Returns the superclass D) Initializes a superclass object

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

What is the purpose of the private keyword in Ruby classes?

A) Restricts access to methods below it B) Allows access to methods from outside the class C) Allows access to methods within the class and its subclasses D) None of the above

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

In Ruby, what is the purpose of method overloading?

A) To provide multiple definitions for the same method with different parameters B) To override a method in the superclass C) To provide a new implementation for a method in the subclass D) To create private methods

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

In Ruby, what is the purpose of the attr_reader method in a class?

A) To define only getter methods for class attributes B) To define only setter methods for class attributes C) To define both reader and writer methods for class attributes D) To define constructor methods for class attributes

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

What is polymorphism in Ruby?

A) The ability for objects of different classes to be treated as objects of a common superclass B) The ability to hide the implementation details of a class C) The ability to restrict access to certain methods D) The ability to create objects from a class

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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Object Oriented Programming (OOP) Concepts in Ruby MCQ question and answer with solution | Ruby Programming MCQs