What is the Shell
What is the difference between a terminal and a shell
What is the shell prompt
How to use the history (the basics)
How to navigate the filesystem
What is the working directory, how to print it and how to change it
What is the root directory
What is the home directory, and how to go there
What is a LAN
What is a WAN
What are the 2 mainly used data transfer protocols for IP (transfer level on the OSI schema)
What is the main difference between TCP and UDP
What is a port