The first round in Mphasis was aptitude conducted by amcat.If you go through R.S Aggarwal it is more than enough.Next round was tech+HR .They asked some basic questions like OOPS concept,structures and union and about project.The last round in Mphasis was versant round.It was quiet difficult.It is like a phoning section with foreign accent.I f you watch english movies YOU will be able to crack this round.