Cognizant Systems Analyst interview questions

interview process is of 4 stages , first they conducted group discussion( quiet easy, you must talk some good points that's enough) then second round will be online aptitude test( very easy round , you will have no quants ie, it contains only English and logical) then third round will be technical interview (bit tough , need to prepare lot and should be strong enough in basics) and the last 4th round will be hr round(easy round, not an elimination round).

Its a very long process. 2 technical round and 1 HR round. It will take 1 week and 1 month to releaser the letter. Need to follow up with HR