Cognizant interview questions

First of all HR is so irresponsible towards people who came for an interview after completing 1 round there send me ground floor for the 2 round after completing that they told me you'll get an email of assessment link and it's been a month I didn't get though it's not like I didn't reach them regarding assessment. I went to the office again they told me yeah you'll get but no response till now so but you should not give hopes to the person who came just to give interview you should let that person know u will get back not never

The interview mainyl focused on OOPs concepts,data structues and algorithms and SQL There were 3 rounds before the technical interview 1-communication round 2-aptitude 3-technical 4-technical interview All rounds were a bit simple And my interview went for an hour covering all the topics in depth