CARS24 Senior Software Engineer Interview Questions and Answers

Design a quiz application with HLD, LLD, and scalability.

• Define the user flow and features of the application.

• Create a high-level design with components and their interactions.

• Create a low-level design with detailed modules and their interactions.

• Consider scalability by using a distributed architecture and load balancing.

• Use a database to store questions, answers, and user data.

• Implement security measures to prevent ch...read more

Abstract class is a class with some abstract methods while interface is a collection of abstract methods.

• Abstract class can have both abstract and non-abstract methods while interface can only have abstract methods.

• Abstract class can have constructors while interface cannot.

• Abstract class can have instance variables while interface cannot.

• Inheritance is achieved using extends keyword for abstract class and implements k...read more