Object Oriented Programming MCQs with Answers
Practice important Object Oriented Programming MCQs with answers and explanations.
Chapter: 3
Q41:
In Object-Oriented Programming, which class is called the base class?
A. The child class
B. The parent class
C. The derived class
D. The instance class
Correct Answer:
B
Chapter: 3
Q42:
What does the principle of "IS A" relationship in inheritance describe?
A. An object is an instance of a class
B. A class is a subclass of another class
C. A derived class is a type of base class
D. A class contains another class
Correct Answer:
C
Chapter: 3
Q43:
What is the primary benefit of using inheritance in object-oriented design?
A. Increased complexity
B. Reuse and reduced redundancy
C. Limited maintainability
D. Additional attributes
Correct Answer:
B
Chapter: 3
Q44:
Which of the following correctly represents an inheritance relationship in OOP?
A. A Car IS A Vehicle
B. A Car HAS A Vehicle
C. A Car is used in Vehicle
D. A Vehicle has Car
Correct Answer:
A
Chapter: 3
Q45:
Abstraction helps in coping with __________ by simplifying complex systems.
A. Redundancy
B. Complexity
C. Implementation
D. Encapsulation
Correct Answer:
B
Chapter: 3
Q46:
Inheritance allows a derived class to reuse the __________ of its base class.
A. Methods and Attributes
B. Only Attributes
C. Only Methods
D. None
Correct Answer:
A
Chapter: 3
Q47:
The __________ class is the one from which attributes and methods are inherited.
A. Derived
B. Child
C. Base
D. Subclass
Correct Answer:
C
Chapter: 3
Q48:
An object’s behavior and attributes that are visible in the context of its current use are determined by __________.
A. Inheritance
B. Encapsulation
C. Abstraction
D. Interface
Correct Answer:
C
Chapter: 3
Q49:
A class in OOP is often referred to as a __________ or blueprint for creating objects.
A. Template
B. Prototype
C. Design
D. Model
Correct Answer:
B
Chapter: 3
Q50:
The principle of __________ ensures that details not relevant to the current problem are hidden.
A. Abstraction
B. Encapsulation
C. Inheritance
D. Polymorphism
Correct Answer:
A
Chapter: 3
Q51:
When a class inherits from another class, it gains the __________ of that class.
A. Attributes and Behavior
B. Methods only
C. State only
D. All characteristics
Correct Answer:
A
Chapter: 3
Q52:
__________ is an advantage of inheritance that helps in reducing code duplication.
A. Increased Complexity
B. Code Reusability
C. Additional Attributes
D. Complex Relationships
Correct Answer:
B
Chapter: 4
Q53:
What is the main benefit of generalization in object-oriented models?
A. Reusability
B. Encapsulation
C. Abstraction
D. Polymorphism
Correct Answer:
A
Chapter: 4
Q54:
Generalization helps to reduce redundancy and simplify a solution by creating a _______.
A. base class
B. subclass
C. derived class
D. concrete class
Correct Answer:
A
Chapter: 4
Q55:
In object-oriented programming, which class type cannot be instantiated?
A. Concrete class
B. Abstract class
C. Derived class
D. Partial class
Correct Answer:
B
Chapter: 4
Q56:
Which of the following is NOT a characteristic of an abstract class?
A. It can be instantiated
B. It promotes reuse
C. It represents a generalized concept
D. It is at the top of class hierarchy
Correct Answer:
A
Chapter: 4
Q57:
In inheritance, a derived class _______ the characteristics of its base class.
A. removes
B. ignores
C. overrides
D. inherits
Correct Answer:
D
Chapter: 4
Q58:
Sub-typing ensures that the derived class is behaviorally _______ with the base class.
A. compatible
B. incompatible
C. similar
D. different
Correct Answer:
A
Chapter: 4
Q59:
Specialization in object-oriented programming is used to _______ the behavior of the base class.
A. extend
B. restrict
C. ignore
D. override
Correct Answer:
B
Chapter: 4
Q60:
Which of the following is an example of specialization?
A. A class that adds new methods to an existing class
B. A class that inherits from another class without modification
C. A class that restricts certain attributes of a base class
D. A class that merges two classes into one
Correct Answer:
C