How many layers are present in the OO design pyramid ?

Choose the incorrect statement in terms of Objects ?

A. Objects are abstractions of real-world

B. Objects can’t manage themselves

C. Objects encapsulate state and representation information

D. All of the mentioned

Which of the following describes”Is-a-Relationship” ?

A. Aggregation

B. Inheritance

C. Dependency

D. All of the mentioned

Object that collects data on request rather than autonomously is known as_________________?

A. Active Object

B. Passive Object

C. Multiple instance

D. None of the mentioned

Which of the following is a disadvantage of OOD ?

A. Easier maintenance

B. Objects may be understood as stand-alone entities

C. Objects are potentially reusable components

D. None of the mentioned

How is generalization implemented in Object Oriented programming languages ?

A. Inheritance

B. Polymorphism

C. Encapsulation

D. Abstract Classes