Cognizant Operations Executive Interview Questions and Answers

The 5 concepts of OOP are encapsulation, inheritance, polymorphism, abstraction, and class.

• Encapsulation: bundling of data and methods that manipulate the data within a single unit

• Inheritance: ability of a class to inherit properties and characteristics from a parent class

• Polymorphism: ability of objects to take on multiple forms or have multiple behaviors

• Abstraction: hiding of complex implementation details and provid...read more

Inheritance is a mechanism in object-oriented programming where a new class is created by inheriting properties of an existing class.

• Inheritance allows for code reuse and promotes a hierarchical organization of classes.

• The existing class is called the superclass or parent class, while the new class is called the subclass or child class.

• The subclass inherits all the properties and methods of the superclass, and can also...read more

Questions related to OOPs, database, and ML concepts.

• OOPs stands for Object-Oriented Programming which is a programming paradigm based on the concept of objects.

• Overloading is when multiple methods have the same name but different parameters, while overriding is when a subclass provides a specific implementation of a method that is already provided by its parent class.

• Polymorphism is the ability of an object to take on...read more