[Network] A simple introduction to IP addresses

Hello. I feel sorry for the person who got killed twice by docker kill.
I've been drinking more coffee lately after the long weekend, but I hope everyone is doing well.

The other day, we had an internal study session and I was given the opportunity to speak, albeit with a little presumptuousness

I spend my days watching the dazzling faces of our new graduates, and when I look at their daily reports, I see questions like, "What is IP?", "What is routing?", and "What is NAT?", and I'm struck by how innocent they are every day (I also entered this industry with no experience, so it brings back memories)

This may seem sudden, but networks are difficult and deep, aren't they?

That was a long introduction, but today I will be sharing the slides from the seminar, "An Easy Guide to IP Addresses" ⬇
20220519_An Easy Guide to IP Addresses

I've experienced this myself, but no matter what book I read, calculating IP addresses is incomprehensible to people who are extremely bad at math

I find subnet calculations particularly tricky, but only 2-3 years ago I realized that it's not that difficult if you can convert between binary and decimal numbers properly. (※ Individual differences may apply)

I hope this article will help those of you who are studying networks to understand the concept better