25H Networking Concepts I need to understand before AIT

As the title suggests I'd like to know some key concepts or topics I need to understand before getting to AIT. Currently I understand Ipv4 addressing and Subnetting. Doing binary to decimal conversions and such. I have taken a Networking Fundamentals course in community college & planning on completing a unix/linux class. I probably need to learn the command line interface in linux to execute network functions. Any pointers would help greatly! I'm excited to be a signal soldier 🫡