These will very much depend upon what kind of job you are being interviewed for, but there are some generalities that you can expect.
These questions are going to relate to your experience within the industry to which you are applying, in particular to your role within it. There is a fine line to be drawn here because on the one hand this is not the place for false modesty, but on the other hand, it is not a good idea to try and claim that you have experience when you do not.
This will more than likely become evident if you are questioned further and then everything that you say will be looked on with suspicion.
You may be asked about your qualifications and how they apply to the job in question.
You could be asked to describe any qualities that you have that you can bring to the position, and you could even be asked to give examples of situations that you have been in and how you dealt with them.
Depending upon what kind of job it is that is being applied for, there is a chance that you will be asked to give a short presentation so that you can demonstrate your knowledge.
If this is expected of you, you will have been notified of it when you were invited for interview.
It is almost guaranteed that you will be asked if you have any questions for your interviewer(s), and this is a great opportunity for you to demonstrate your knowledge of the company that you are hoping to work for, and also to show them where you are hoping this job will lead to.
Obviously, in order to come through this stage of the interview successfully, you will have had to have done some research into the company so that your questions are relevant.