Conducted 4 levels of Interview for 3 and a half hours during working days and cleared everything and finally cleared the HR round as well. HR asked me to wait for 2 weeks to get approval from senior management but after 3 weeks time period after multiple follow-ups, HR replied that the position is on hold and they could not proceed further. Worst experience ever!

Straightforward and easy, mostly behavioral questions and things like that. Talking about past experience and things of that sort. Not much else to say beyond that. Not much you can study for.