Draw end to end architecture and testing flow of your project and explain each testing process.
RDBMS joins questions
Selenium real time automation questions, how you will automate a web page full with graohs and charts
String Java programs to reverse, count the occurance of letter in a string.
What is load,stress testing, what is baseline testing
Difference between adhoc and exploratory test
What is load balancer and application server
Basic ETL testing questions
Puzzles - famous 3l and 5l jar puzzle
All in all the interview was a discussion on multiple testing scenarios, interviewer process is really good, interviewer will give you enough time to put all your points