A job interview starts with an introduction from the employer. Then the employer can continue with an overview of the position and company, or he can begin to ask the applicant questions.
When conducting an interview, it is important to prepare in advance. The employer can create a structure for the interview to follow or work with colleagues to develop an interview template. Then, the employer is able to determine what the company needs from the applicant and develop questions to ask during the interview.
Tips for conducting interviews can be found at Forbes.com, the Wall Street Journal and Indeed.com.