Taking the NCLEX-PN® CAT
CAT is an acronym for "computer adaptive test," a testing format that is interactively based on your response to the questions. Based on your skill level, the CAT ensures that the questions are not "too hard" or "too easy."
Your first question will be relatively easy—below the level of minimum competency. If you answer it correctly, the computer selects a slightly more difficult question. If answered incorrectly, the computer selects a slightly easier question. By continuing to do this throughout the test, the computer is able to calculate your level of competence.