The 911 Operator Passbook(R) prepares you for your test by allowing you to take practice exams in the subjects you need to study. It provides hundreds of questions and answers in the areas that will likely be covered on your upcoming exam, including but not limited to: understanding descriptions of two-way radio procedures and operation; record keeping related to fire, ambulance and police; clerical aptitude; coding and decoding information; understanding and interpreting written material; and other related areas.