11. What is the purpose of the attr_accessor method in Ruby classes? A. To define constructor methods for class attributes B. To define only a writer method for class attributes C. To define both reader and writer methods for class attributes D. To define only a reader method for class attributes Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
12. What is the difference between attr_reader, attr_writer, and attr_accessor in Ruby? A. attr_reader defines both reader and writer methods, attr_writer defines only reader methods, and attr_accessor defines only writer methods B. attr_reader defines both reader and writer methods, attr_writer defines only writer methods, and attr_accessor defines only reader methods C. attr_reader defines only writer methods, attr_writer defines both reader and writer methods, and attr_accessor defines only reader methods D. attr_reader defines only reader methods, attr_writer defines only writer methods, and attr_accessor defines both Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
13. What is the main advantage of using OOP principles in programming? A. Modularity and reusability B. Improved performance C. Simplicity and ease of use D. Reduced memory usage Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
14. What is the purpose of the include keyword in Ruby classes? A. To create a new instance B. To define a new method C. To inherit from another class D. To mix in methods from a module into a class Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
15. What does the term "object" refer to in OOP? A. A method in a class B. A variable in a class C. An instance of a class D. A module in a class Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
16. What is the purpose of inheritance in OOP? A. To hide the implementation details B. To allow a class to inherit properties and behaviors from another class C. To restrict access to certain methods D. To hide the implementation details Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
17. Which OOP principle emphasizes the hiding of implementation details and showing only necessary features? A. Polymorphism B. Encapsulation C. Abstraction D. Inheritance Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
18. Which concept in OOP allows objects to exhibit multiple behaviors based on their types or class? A. Abstraction B. Inheritance C. Encapsulation D. Polymorphism Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
19. Which OOP principle promotes reusability and reduces redundancy in code? A. Inheritance B. Abstraction C. Polymorphism D. Encapsulation Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
20. What does the attr_accessor method do in Ruby OOP? A. Creates constructor methods B. Creates only a writer method C. Creates only a reader method D. Creates both reader and writer methods for class attributes Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
