Marketing: This needs lot of interacting with Customers, Clients, Partners and Stakeholders. Thw work on a daily basis involves travelling, utilosing the resources to increase the sales. To move to pure marketing you might have to work in sales for initial couple of years.
Finance: You will need analytical approach in this sector. It is tad tougher than other specialisations. As this involves lot of hectic schedules, you need to be prepared to work for extra hours.
Operations: This needs a coordination of many departments. So you should be prepared to work simulateblneously wih multiple departments. You need to be good at negotiating to take this specialisation.
Information Management: Ability to manage and work with teams spread across various geographical locations is required in this sector. With Analytics emerging to the forefront, if you are good om Statistics and mathematical analysis, this sector is for you.
HR: For those who are interested in this sector, Communication skills and Integrity are the most important traits. If you are good at resolving conflicts, then this is for you.
Common Aptitude Test (CAT) is an exam consisting of topics like Quantitive Aptitude, logical reasoning etc. topics. Most of the top B-Schools in India CAT score for admission in MBA courses. Government colleges like IIM's as well as private colleges accepts this score. And even cat prepration can help you to clear exam like SSC, bank PO.