Just like the actual KBA, the KBA Practice Tool is based on a combination of knowledge and time management.
For a realistic KBA experience, give yourself 90 minutes to complete all 75 questions using a timer. There is no opportunity to stop and resume later. If you do, you will need to restart the tool and your own clock to the beginning.
Try the KBA Practice Tool as many times as you like and compare your reports to track your progress. Each time you’ll begin with a fresh slate.