Classes and Objects in Ruby MCQ question and answer with solution

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Which keyword is used to refer to the current instance of a class in Ruby?

A) self B) instance C) @ D) this

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Answer & Solution

Answer: Option A

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What is the method used to define a class variable in Ruby?

A) @@variable_name B) @variable_name C) def variable_name D) self.variable_name

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Answer & Solution

Answer: Option A

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What is the method used to access class variables in Ruby?

A) Using accessor methods B) Using instance methods C) Using class methods D) Using global variables

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Answer & Solution

Answer: Option C

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What is the purpose of the attr_accessor method in Ruby classes?

A) To create getter and setter methods for instance variables B) To define class methods C) To define instance methods D) To create new instances

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Answer & Solution

Answer: Option A

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What is the syntax for defining an instance method in Ruby?

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

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Answer & Solution

Answer: Option A

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Which method is used to define getter and setter methods for instance variables in Ruby?

A) attr_accessor B) get_set C) setter_getter D) set_get

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Answer & Solution

Answer: Option A

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What is the purpose of the attr_reader method in Ruby classes?

A) To create only getter methods for instance variables B) To create only setter methods for instance variables C) To create both getter and setter methods for instance variables D) To create instance methods

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Answer & Solution

Answer: Option A

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Which keyword is used to call a method on an object in Ruby?

A) call B) invoke C) execute D) none of the above

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Answer & Solution

Answer: Option D

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What is the syntax for defining a class in Ruby?

A) class MyClass B) class C) def class D) define class

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Answer & Solution

Answer: Option B

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How do you access class variables in Ruby?

A) Using accessor methods B) Using instance methods C) Using class methods D) Using global variables

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Answer & Solution

Answer: Option C

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