Round1: Not that tough yet time is gold in this round.
640 members wrote only 180+ cleared.
Round2: OS, CN, DBMS, Threading, C & Java code snippets, DAA, Algorithms, Data Structures, Expecting outputs and error of some code or algorithms. After a 8 days they announced results and the website only 59 members cleared.
Round3: Be careful wth what you mention on resume, first they will ask all about ur resume, acads, projects, achievements. Then testing questions comes, blackbox, whitebox, models, methods, CMMI levels, diif tools. Be confident and tell what ever you know related to questions.
Round 4: Try to impress, be confident, show them you got some stuff in you, and convey what ever you know, good positive attitude.
Round 5: Be cool and positive and talk to them confidently.