Hi MA. To crack an Investment bank and to be able to be prepared for the interview of the same, you should be able to explain to the interviewer why you’re fit for that investment banker’s role and with your skillset how you can contribute to the roles and responsibilities.
If you are comparing top consulting firms (e.g. MBB) with top investment banks (e.g. JPMC, MS, Citi, Barclays, BAML, CS). You can crack an interview with knowledge and insight of the roles and responsibilities.
Companies like Goldman, JPMC, Morgan Stanley hire all the time from undergrad universities like IITs/DTU/NSIT and top B-Schools of the nation. If you’re not from one of these colleges, I would insist you to network aggressively on LinkedIn and make a case for yourself. In order to ace the interviews, a solid grasp on the basics of accounting, capital markets and economics is necessary. CFA/FRM are some good-to-have credentials on your resume in order get an interview call and then, acing it. Best of Luck!