Short answerEasy2 marks
Name any two basic principles of object-oriented programming.
Topic: Principles of OOP
Previous-year question practice database
Answer
Exam answer
Inheritance and Polymorphism. (Encapsulation, Abstraction and Data hiding are equally acceptable.)
Explanation
Four principles are examinable, so learn all four with a one-line meaning each: Inheritance - one class acquires the properties of another Polymorphism - one name behaving in several forms (overloading) Encapsulation - binding data with the methods that act on it, and hiding it Abstraction - showing only essential features and hiding the detail Naming two is enough for the marks, but a one-line definition beside each protects you if the examiner wants more.
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