You have to give more examples and by implement code

I am finding discrepancies between the information given in the videos, and the answers to the questions in the tests. Makes it really difficult to believe you know what you're talking about when you say something like Stateless firewalls focus on individual packets, but the answer to the question is actually Statefull, and no information I find says your test is correct. The information in you videos, are, but your tests have multiple continuity issues that might need to be address --- that's aside from talking a little TOO informal. Formality isn't scary.

Course is essentially a colletion of links to manuals. Videos are just small overviews