The CEH v13 (312-50) exam draws from all 20 domains below — roughly 5% of the 125 exam questions come from each one, so a weak module costs you on test day. Every module page is a condensed study resource: the key topics that surface on the exam, the terms and concepts to know cold, how the material is tested, and a short FAQ. Each module also has its own share of the 306-card flashcard deck and a 10-question practice quiz, so one page gives you notes, cards, and a self-test in one place.
The exam is 125 multiple-choice questions in four hours, so breadth beats depth — you need a working answer on every domain, not mastery of one. A sequence that works for most candidates:
Most candidates need six weeks at 1–2 hours a day, or four weeks at 4+ hours a day. Two focused sessions a day — cards in the morning, one module quiz in the evening — prepares you better for 125 questions across 20 domains than weekend cramming.