Inheritance and Polymorphism in Ruby MCQ question and answer with solution | Ruby Programming MCQs

A. Refers to the current instance of the class

B. Refers to the superclass of the class

C. Refers to the class itself

D. Refers to the class constructor

A. Defines only reader methods for class attributes

B. Defines only writer methods for class attributes

C. Defines constructor methods for class attributes

D. Defines only reader methods for class attributes

A. A mechanism by which a class can create multiple instances of another class

B. A mechanism by which a class can hide implementation details from another class

C. A mechanism by which a class can inherit properties and behaviors from another class

D. A mechanism by which a class can override methods from another class

A. Encapsulation

B. Inheritance

C. Abstraction

D. Polymorphism

A. To initialize instance variables

B. To define class methods

C. To create new instances of the class

D. To define getter and setter methods

A. private def

B. def method.private

C. def private

D. private

A. It allows multiple classes to inherit from each other

B. It creates multiple instances of a class

C. It hides the internal state of an object and restricts access to it

D. It allows objects of different classes to be treated as objects of a common superclass

A. The ability to restrict access to certain methods

B. The ability for objects of different classes to be treated as objects of a common superclass

C. The ability to create multiple instances

D. The ability to restrict access to certain methods

A. Calls a superclass method

B. Initializes a new instance

C. Adds methods from a module as class methods

D. Adds methods from a module as instance methods

A. To expose all the implementation details

B. To restrict access to public methods

C. To define class methods

D. To hide the complex implementation details and only expose the necessary features