Object Oriented Programming MCQs with Answers
Practice important Object Oriented Programming MCQs with answers and explanations.
Multiple Choice Questions
Q21: What is the primary benefit of Information Hiding?
- A: It increases complexity
- B: It simplifies the model
- C: It requires more code
- D: It makes objects more accessible
View Answer
B
Q22: What concept ensures that only necessary details of an object are visible and implementation details are hidden?
- A: Encapsulation
- B: Information Hiding
- C: Inheritance
- D: Polymorphism
View Answer
B
Q23: Which of the following is an example of encapsulation?
- A: A phone’s internal data and its ability to show information to users
- B: A database schema and its data
- C: A public API and its private methods
- D: A compiler and its source code
View Answer
A
Q24: What does the interface of an object provide?
- A: The actual implementation details
- B: A set of functions that can be used by other objects
- C: The internal state of the object
- D: The class definition
View Answer
B
Q25: Which part of the implementation includes the data structures and functionality of an object?
- A: Interface
- B: Abstraction
- C: Implementation
- D: Encapsulation
View Answer
C
Q26: What does the separation of interface and implementation allow?
- A: It combines the interface with the implementation
- B: It hides implementation details while exposing a consistent interface
- C: It merges the interface and implementation
- D: It simplifies the implementation details
View Answer
B
Q27: Which of the following is NOT a real-life example of information hiding?
- A: Ali’s personal information stored in his brain
- B: An email server hiding account information
- C: A car’s engine details visible to everyone
- D: A phone’s SIM card data hidden from users
View Answer
C
Q28: Information hiding in Object-Oriented Programming is achieved using __________ and Abstraction.
- A: Polymorphism
- B: Encapsulation
- C: Inheritance
- D: Generic Programming
View Answer
B
Q29: An object’s __________ provides a list of functions that other objects can use to interact with it.
- A: Data Structure
- B: Interface
- C: State
- D: Behavior
View Answer
B
Q30: Encapsulation ensures that all data and functions related to an object are __________ inside the object.
- A: Visible
- B: Hidden
- C: Shared
- D: Separated
View Answer
B