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.

I'm not sure how this is rated so high. Most "lessons" are 2 minute, ultra high altitude videos followed by 10-20 minutes of reading. You can get more info from random YT videos. The material is full of typos. There are very few labs and they take < 5 minutes to do because they are so simple.

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