Free CCNA 200-301 Course: TCP/IP and OSI models explained (Udemy.com)

Good to remember: All People Sleeping Through Networking Don't Pass : Application, Presentation, Session, Transport, Network, Data Link, Phisical

This course presented a moderate learning experience, albeit falling short of my initial expectations, considering its complimentary nature. The initial four videos seemed to reiterate the same content excessively, resulting in a lack of substantial relevance. However, it did manage to deliver a satisfactory outcome, given its free nature. Notably, the fifth video provided the most comprehensive and enlightening explanation throughout the entire course.

Excelente Formador, o acompanho noutras plataformas e sempre que preciso uma opinião qualificada sobre um dado tema, escolho a ele.

I am new to netwoking and I really used to struggle understanding OSI model and layers. Thanks David for this free course. Your videos are very easy to understand and gain more confidence in networking.

Not that basic but I can follow and will surely apply this knowledge on other courses that I will take.

Really liked the demo on the ports using packet tracer, wish there explanation and demo using packet tracer on other ports and layers.

Better than my university professors. This is the kind of learning I've always wanted. And, his style of teaching is what I've always wanted too. Physical demonstration of apparatus needed, full exploration of tools, and also the breakdowns of all complex definitions make it easy for us to understand. I've always counted on David sir for any IT-related curiosity of mines. I always hope to get a video regarding the topic I search for on YouTube. I wish if I've known him earlier. Anyway, thanks a ton David sir.

This is the fantastic Lecture,And i learned new things that how can i send and reacieve emails, And the main thing is that i learned that there are several diffrenets in port numbers Using IANA.Thanks to the proffessor.I enjoyed the session.

I really like this instructor. He's very clear and explains topics very well. I find him interesting so, that's good and made the course easier for me. I've watched some of his YouTube videos and plan to take more of his Udemy courses at some point. Thank you very much!

Enjoyed this course everything explained in clear detail with practical video explanations using Packet Tracer.