How many types of AMI?

AWS provided AMI,
Market place AMI,
Custom AMI

What is SSH stands for?

Secure Shell

SSH Port Number?

Port 22

What is CLI?

CLI stands for Command-Line Interface.
It is a text-based interface that allows users to interact with a computer, server, or cloud service by typing commands, instead of using a graphical interface (GUI).

What is User Data in AWS?

User Data is a script that you can provide when launching an EC2 instance.