Advisory for you
If you have an invitation from the employer to a job interview, it means that you have passed through the evaluation of CV and cover letter. This means that they consider about you as a suitable candidate. Remains only the last step - you have to pass an interview. Interviews are fun becouse both sites want to be successfull. The employer wants to have already selected candidates and you are interested in a work.
Job interviews can be divided according to who you're interviewing with. There are two options - either a personnel manager or a company executive staff - usually your future boss.
In the case that you speak with a personnel manager you can expect several quastions about your personality, your hobbies, etc. It is necessary to realize that HR people have usually studied psychology. They do not understand job position well. They evaluates your personality and impression. They usually have the task to select suitable candidates from their point of view. You can expect questions such as:
If you go through an interview with personnel manager and he or she evaluates you as a suitable candidate, you will go usually the last round: the interview with your future boss. If the boss is satisfied with your knowledge and your personality you will get the job easily.