Aptitude Test
Quantitative
Reasoning / Analytical
Verbal English
Technical

technical interview contains 3 round and each round has its own significance to estimate candidate's skill and knowledge.
first round is about your basic programing skill where they ask about data structure related questions and give some situations in programing to solve.
second round is about your other technical skill which you specify in your resume and they may also ask few aptitude questions to check your smartness.
third round is about to know how practically you were involved in your technical field. they ask about the various project you have done. they ask how you approached in a particular project and the phase of making project like how testing, debugging you did in that project.

they ask about you, your academic background.
they ask about the current project you are doing.
finally they ask about location where you would like to join-bangalore or hyderabad.
they would like if you have any questions to ask.
this interview is all about your confidence and the way you interact.

dont mug up. just try to increase your technical skill and maintain your gpa atleast above 7.5 for cut off criteria of good companies.
read standard books like denise ritchi for c, bruce eikel for c++, sahni for data structures.
best of luck... :)

around 250 student appeared in written exam. 64 of them got selected for interview. each round was elimination round. finally 10 students were offered job.
my technical skill, confidence and project work always favored me in written as well as interview.