GATE | GATE-CS-2005 | Question 4

Which one of the following are essential features of an object-oriented programming language? (GATE CS 2005)
(i) Abstraction and encapsulation
(ii) Strictly-typedness
(iii) Type-safe property coupled with sub-type rule
(iv) Polymorphism in the presence of inheritance

Answer (b)
Abstraction, Encapsulation, Polymorphism and Inheritance are the essential features of a OOP Language (See the Wiki page for OOP).
(A) (i) and (ii) only
(B) (i) and (iv) only
(C) (i), (ii) and (iv) only
(D) (i), (iii) and (iv) only


Answer: (B)

Explanation: Abstraction, Encapsulation, Polymorphism and Inheritance are the essential features of a OOP Language (See the Wiki page for OOP).

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