Among the CS subjects I studied in school, the one I enjoyed the most was the network subject. It was good that I could briefly review TCP, UDP, IP, etc. in the beginning of the lecture. I only learned about HTTP very briefly in my major textbook, so I thought I should study the book called HTTP Complete Guide sometime, but I kept putting it off because it was too much to study alone while preparing for a job after graduation, and it seemed like it would take a long time. Thanks to this lecture, I was able to study the core contents of HTTP in a relatively short period of time, which was great. The 8th edition of the Computer Networking Top-Down Approach book, which was newly revised in 2022, still uses the term Entity Body, so I didn't know that the term Entity has now been changed to the term Representation. Even though it was an older lecture, I felt like I learned a lot because it was explained in accordance with the latest specifications. When I have questions while listening to the lecture, I look at previous questions or Google them, but even when I Google them, I'm not sure if I found the right information or there are many things I can't find, so I wrote a lot of questions. I feel sorry, and I'm grateful to Professor Kim Young-han and the supporters who always answer well. I will also listen to the MVC lecture diligently!