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