Even though I am a senior in computer engineering this year, I realized that I lack knowledge about servers and networks. I became interested in getting a job in the backend field and wanted to build a solid foundation. First of all, the first thing that comes to mind is that the teacher's voice is so focused. It was easy to understand because he explained it evenly without being too biased toward the flow, backend, or frontend. To be honest, the concepts themselves are difficult major knowledge, so I didn't understand everything after listening to it once! But I really appreciated that he directly practiced abstract contents with Python code. I think it will be very helpful for technical interviews, so I would like to recommend it to those who are preparing for employment as a new employee or to undergraduate students in their third year or higher. The weather is getting warmer, so everyone, fighting!