Taking an exam
The link, the code and the attempts.
Open the link in the email and ask for a code; it comes to your email. Answer each question; there can be more than one right option, and you are not told how many. Save as you go, and hand in when you are done.
If the exam has a time limit, the answers you saved count when the time is up. A failed attempt may have to wait some days before the next. Passing gives a diploma with a code anyone can check.