Rotech Info Systems interview questions

I applied through an employee referral. The process took 3 days,The interview took place suddenly and was very unplanned. It was simple, mostly about my previous work experience but I was not given the time to ask my questions.

Interview process was good. It was more of technical questions related to the domain. Not too complex. There were 2 technical rounds and one HR round. Overall interview process was intermediate and smooth. For few questions which I dint know the answer I frankly said that I don't know.