2. Research thoroughly about your prospective employer: The job interviewer is sure to ask you questions related to the company you  are interviewing, if you decline to answer the question related to the company, job interviewer might think that you are a lazy person, who is least interested about the company.  Therefore, it is advisable for you to research methodically about the company you are interviewing, in order to avoid falling into the job interview trap. This you can very well do by visiting the company homepage or by just Google search.