During my TCS technical interview, the interviewer asked me questions on Java OOP concepts and Computer Networks. Some of the questions were the difference between inheritance and polymorphism, encapsulation and abstraction with examples, and the difference between the OSI and TCP/IP models. I answered the questions confidently and explained them with simple examples. The interview process included an aptitude test, technical interview, managerial round, and HR round. Overall, it was a good learning experience and helped me improve my technical and communication skills.