Object-Oriented Programming Quiz

Which of the following best describes the Object-Oriented Approach?

• A paradigm focused on step-by-step procedures

• A paradigm that organizes software design around objects

• A method that uses only functions without data

• A system that hides all program details from users

Which OOP advantage allows the same code to be used in multiple programs, reducing duplication?

• Modularity

• Re-usability

• Maintainability

• Data Security

Which OOP concept involves hiding data and controlling access to it?

• Abstraction

• Encapsulation

• Inheritance

• Modifiability

Inheritance refers to:

• One class taking on many forms

• One class deriving properties from another class

• Hiding implementation details from the user

• Dividing a program into separate modules

Which concept allows an object to have different implementations of the same method name?

• Encapsulation

• Modularity

• Polymorphism

• Extensibility

In Java, which of the following is a reserved word?

• account

• this

• balance

• deposit

Which access modifier allows a member to be accessible everywhere?

• private

• default

• protected

• public

What is the role of the Java Virtual Machine (JVM)?

• Convert Java source code into bytecode

• Execute Java bytecode by converting it to machine language

• Compile C++ code

• Store Java libraries

In Java, what must every program contain?

• At least one constructor

• At least one package

• A main() method

• A try-catch block

Which advantage of OOP focuses on making small changes without affecting other parts of the program?

• Maintainability

• Extensibility

• Modifiability

• Simplicity