In a computer-adaptive test, the computer screen displays one question at a time, which is chosen from a very large pool of questions categorized by content and difficulty. The first question is always of a medium difficulty, and each subsequent question is determined by your responses to all the previous questions.
In other words, the CAT adjusts itself to your ability level - you’ll get few questions that are either too easy or too difficult for you. The number of questions you get also depends on your previous answers.
In one section of TOEFL test, you are allowed to go back to the previous questions.
Most questions in the TOEFL CAT has four answer options, and you are required to select one of these four as the correct answer by clicking on it. A subsequent question is displayed on the screen only after you have answered the previous question, so you cannot skip a question. You cannot also go back to a previously answered question to change your answer. Thus, if you guess a correct answer or answer a question incorrectly by mistake, your answers to subsequent questions will lead you back to questions that are at the appropriate level of difficulty for you.
Some questions may have special directions which appear in a box under the question. Like some questions may have two answers and some may require you to make more than two selections.
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