GMAT Adaptive Test MechanismCATKing
The GMAT computer adaptive test (CAT) is not just a computerized version of a paper-and-pencil test. On the GMAT, the test actually adapts to your performance as you are taking the test.
When you begin the GMAT Test, the computer assumes you that have an average score and gives you a question of medium difficulty. As you get answers correct, the computer serves up more difficult questions and estimates your ability. And vice versa, as you answer incorrectly, the computer serves up easier questions and decreases its estimate of your ability. Your score is determined by an algorithm that calculates your ability level based not just on what you got right or wrong; but also on the difficulty level of the questions you answered which is the best part about GMAT computer adaptive test.
There few things that would surprise those who have recently got to know about GMAT computer adaptive test; because each answer directly affects the next question, the GMAT computer adaptive test does not allow you to go back to questions you have already answered. On the GMAT computer adaptive test you see only one question at a time. You will not see the next question until you have marked one of the given options. Once you have confirmed your answer.
Since you cannot revisit previous questions, if you don’t know an answer, guess! Try to guess smartly by eliminating wrong answer choices. But since there is a penalty for each unanswered question, it’s advisable to answer the question strategically instead of leaving it unanswered.
Tips to keep in mind for GMAT – http://catking.in/2016/10/18/6423/