Visa Inc. Graduate Software Developer interview questions

Rejected me at final stage on basis that I did not have sound understanding of waterfall testing method. However, I was excellent in all other parts including coding where I manage to do question in much lesser time compared to other students.

3 rounds 1 telephonic-mostly sorting algorithms, working of stacks queues, asked 2 questions- a number most repeating num from 1-100 2 hackerrank online coding- 3 sections, 1st mcq(ask time complexities of codes),2nd and 3rd programming quest 3 onsite technical- will ask a sorting algorithm or basics about programming