Fiserv Software Engineer(Internship) interview questions

After GD round i got a call for technical interview but they did not ask anything related to programming. They just asked OOP concepts and some language specific things like data types etc. Interviewer was not polite at all.

first round was GD round and the out of 50 students 20 students were shortlisted, and our group topic was how covid affected the financial Management solutions. and then the 2 round was technical interview, they asked: 1 tell me abou urself 2 projects 3 describe your project 4 java question 5 SQL queries 6 normalization 7 dbms 8 exception handling 9 throwable in exception handling 10 logical ability question and then how wil you print this array for example 80,10,70,15,60... what will be the next value nd code to print this . this interview round was of 30 mins and then the next round proceeded with the HR round , which will be very simple.