The job interviews involve different interview rounds each testing a new category of capability. Basically the first round is the introduction round where you take the employer through your resume. Then the second round follows the HR round in which your subject knowledge and communication skills are tested. The remaining interview rounds follows.
The job interview is an examination that provides you eligibility to enter into a profession. In order to get through the job interview, there are certain rules and regulations that you have to abide by. The job candidate should follow the job interview formats properly to complete the interview successfully. When a person is intending to attend a job interview then he should make preparations in advance. He should be prepared mentally before going for an interview. Mental preparation is a must in a job interview. Other than this, the details like the format of the interview, venue, with which the interview is going to be, what are the expected topics you will be questioned on etc should be known before hand.
You should avoid any kind of mistakes in a job interview. First impression counts a lot in any job interview. Reach before the time for the interview. Your body language plays an important role in any interview. Try to behave properly in a job interview. Your body language should be in tune with the need and situation. Don't interrupt the employer while he talks to you, answer only when he asks for, don't be hasty, communicate well to exhibit your communication skills, don't ask anything to the employer unless he asks you. Sit properly and be confident.
Therefore, avoid these things and follow the things those are necessary to be done in a job interview.