This is such a great lecture! I just got a job and I'm doing network troubleshooting, but my knowledge about networks was fragmented and not smooth, so it was so hard. I've been secretly hoping that Inflearn would upload a lecture like this. I signed up for this lecture as an early bird as soon as it was uploaded, and I felt like a stream was being created through this lecture! I felt like I've grown since before I took it, combining what I learned in undergraduate lectures with the situations I've experienced in practice!!! Absolutely!! If you can give me a roadmap for networks, I'm confident I can take all the lectures!!!!!! I've taken a lot of lectures, but among the lectures I've taken through Inflearn, this is the one that I don't regret spending money on. Strong recommendation~~!!!