That course really bites ass and is extremely difficult. It covers everything under the sun and you have to be able to read Javascript programs with no ability to run them and figure out what they do. And the same for determining what snippets of CSS do. This is actually quite hard.
I passed it by a lot, but I wasn’t confident in it as you have to learn a huge amount of material across three extremely large areas of study and just hope you studied the right things.