The quiz has a time limit and you won't be able to answer the questions unless you have carefully read the material. Note that the questions do not test your understanding, just the fact that you read the material.
Only registered, enrolled users can take graded quizzes
In order to create video or audio recordings your computer needs to be
webcam-enabled. If you don't have a webcam on your computer, you can still
record audio-only messages by first installing the Google Video Chat