Don't ask, just try. At least, when you send in your application, got chance for interview. No send, not even chance for interview

Depends on your experience, what you have done and your achievements you have put in your resume. The next hurdle is through a series of interviews which are based on your past experiences, whether in your short working experience and university experience. Also, difficulty depends on the number of available projects that the company has and available positions as well. If there are a lot of candidates applying, then of course difficulty gets harder. I went through this but joined only after working 2 years before joining in fresh as an analyst.

It will be dependent on the interviewer, it is quite different between each interviewer on how they want to conduct it.