Classes and Objects in Ruby MCQ question and answer with solution

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Current Affairs Interview Blog

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

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

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Answer & Solution

Answer: Option A

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

A) self B) this C) current D) object

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Answer & Solution

Answer: Option A

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Which method is used to define class variables in Ruby?

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

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Answer & Solution

Answer: Option A

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What does the private keyword do in a Ruby class?

A) It makes methods private, accessible only within the class B) It makes methods public, accessible from outside the class C) It makes methods protected, accessible only within the class and its subclasses D) It defines class variables

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Answer & Solution

Answer: Option A

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What does the protected keyword do in a Ruby class?

A) It makes methods protected, accessible only within the class and its subclasses B) It makes methods private, accessible only within the class C) It makes methods public, accessible from outside the class D) It defines class variables

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Answer & Solution

Answer: Option A

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How do you access instance 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 B

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What is the method used to define instance variables in Ruby?

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

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Answer & Solution

Answer: Option A

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Which keyword is used to inherit a class in Ruby?

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

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Answer & Solution

Answer: Option D

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What does the super keyword do in Ruby classes?

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

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Answer & Solution

Answer: Option A

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What is the syntax for defining a class method in Ruby?

A) def self.method_name B) def class.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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Classes and Objects in Ruby MCQ question and answer with solution | Ruby Programming MCQs