If you are interested in applying to Fullstack Academy and want to assess your readiness, the Admissions Prep Assessment is a great place to start. If you aren't familiar with Fullstack's Admissions process, review the process here.
The Admissions Prep Practice Assessment emulates the format of the Fullstack Admissions Online Coding Assessment. It uses the same platform (Hacker Rank), and it has the same amount of questions as the actual Admissions Online Coding Assessment.
Additionally, there is a set of solution videos and solutions for the Admissions Prep Practice Assessment to review after you take the assessment.
If you can complete the majority of problems in and feel confident on the material in the Admissions Prep Practice Assessment you should feel confident in your abilities for the actual Admission Online Coding Assessment to Fullstack Academy.