Book excerpt: The Police Communications Technician 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 written information; communicating written information to another person; remembering new information; recognizing the existence of a problem; combining separate pieces of information to form a general conclusion; and more.