Cognizant Programme Analyst interview questions

The interview is scheduled by a recruiter. They called for interview at 10'O clock, but I have to wait for interview till 4'0 clock. They called too many candidates at a time. They called me for Node.js, but they asked about React or Angular. The interviewer looks she don't know anything just asking questions and busy with her mobile. Don't call for interview if you don't have openings for the role.

I applied through college or university. The process took 2 days. First round: Had aptitude questions which were very easy and had automata fix part which contained 7 programs with bug fixing and other error corrections to be done. Second round: Clearing the first round, second round was technical HR round which mainly had questions from the resume. Knowing each and every part of the project is an added advantage. Third round: It was General HR round with simple questions.