Classes and Objects in Ruby MCQ question and answer with solution

1

What is the keyword used to define a class in Ruby?

A) class B) def class C) class def D) define_class

Discuss

Answer & Solution

Answer: Option A

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

2

Which keyword is used to create a new instance of a class in Ruby?

A) new B) create C) instantiate D) instance

Discuss

Answer & Solution

Answer: Option A

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

3

How do you define a constructor in Ruby?

A) def initialize B) def constructor C) def init D) def constructor()

Discuss

Answer & Solution

Answer: Option A

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

4

Which of the following is used to access instance variables in Ruby?

A) @variable B) $variable C) @@variable D) variable

Discuss

Answer & Solution

Answer: Option A

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

5

What does the attr_accessor method do in Ruby?

A) Creates getter and setter methods for an instance variable B) Creates only getter methods for an instance variable C) Creates only setter methods for an instance variable D) Creates private methods for an instance variable

Discuss

Answer & Solution

Answer: Option A

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

6

What is the purpose of the initialize method in Ruby?

A) To initialize class variables B) To define instance methods C) To create object instances D) To initialize object properties

Discuss

Answer & Solution

Answer: Option D

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

7

What is the method used to inherit from a superclass in Ruby?

A) < B) -< C) extends D) inherit

Discuss

Answer & Solution

Answer: Option A

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

8

What does the super keyword do in Ruby?

A) Calls the method of the superclass with the same name B) Calls the method of the subclass with the same name C) Exits the method D) Returns a value

Discuss

Answer & Solution

Answer: Option A

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

9

What is the method used to check if an object is an instance of a particular class in Ruby?

A) instance_of? B) is_instance? C) is_a? D) object_of?

Discuss

Answer & Solution

Answer: Option C

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

10

What is the method used to define class methods in Ruby?

A) def self.method_name B) def class.method_name C) def method_name.self D) def method_name.static

Discuss

Answer & Solution

Answer: Option A

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

Classes and Objects in Ruby MCQ question and answer with solution | Ruby Programming MCQs