The official source. They provide modular training that usually ends with a knowledge check or quiz.
There are a fair number of "trick" questions. These often revolve to Plugin Rules or Scan Defaults . tenable quizzes
Among the competitors were John, a seasoned IT security engineer; Emily, a junior security analyst; and David, a network administrator. John was confident that he would win, having been with the company for over 5 years and having a deep understanding of security concepts. Emily, on the other hand, was determined to prove herself, having recently completed her security certifications. David, with his networking background, was hoping to show off his skills. The official source