Computer Networks

Yup, and for further TCP/IP in more depth: https://archive.org/details/TCPIPIllustratedVol.1TheProtocols1stEdition

+1 on this. Here are some utilities/concepts that you’d want to play around. Knowing what they do and how they do it will take you a long way Ping Trace route DNS lookup Packet sniffing IP - Subnets, VPCs, VPC peering Tunneling

Nothing specific, just to have overall knowledge of computer networks.

It’s a way to understand how computers talk to each other. The science involves a lot of rules, known as protocols on each layer of abstraction. You could just start at the most fundamental level and say it’s just electrons moving in all directions to get things done but in the realm of computer science, the abstraction starts at the physical level of the cables managing the traffic. If you think about it, it’s just traffic management. There are these protocols which define what and how of the data and there are these network concepts that define the when and where of this data. The whole dance is to reduce the time (latency) and improve reliability (jitter, packet loss, etc) while reducing the amount of data (compression), while keeping it secure (cryptography)