Tata Consultancy Services Interview Question

Explain the four pillars of OOPs with examples. What is the difference between C and Java? Write a program to check if a string is a palindrome. What is normalization in DBMS? Write an SQL query to find the second highest salary. What is the difference between process and thread? Explain deadlock with an example. What is TCP/IP model? Explain JOINs in SQL. What are your academic projects? Explain your role.