Lab sessions provide 1.5 hours initially. Eight one-hour extensions are allowed for a maximum session time of 9.5 hours in total.

If you are interrupted or need to leave and plan to come back to finish, be sure to extend your lab because the lab timer continues while you are gone. You will not be able to resume your lab if the time runs out while you are gone.

The best strategy is to complete at least one module during your maximum session. You can take any lab as many times as you like and can begin with any module in most cases.