AWS EC2 INTERVIEW QUESTIONS 

1 What is Amazon EC2 and when would you use it?
2 What is an AMI and how is it used when launching EC2 instances?
3 What is the difference between an instance store and an EBS-backed instance?
4 What are EC2 instance types and how are they classified?
5 What is a key pair in EC2 and why is it required?
6 What is user data in EC2?
7 What is the difference between stop, reboot, and terminate?
8 What happens to the EBS volume when an EC2 instance is terminated?
9 What is an Elastic IP and when would you use it?
10 What are security groups in EC2?
11 How do you design a highly available EC2 architecture?
12 What is Auto Scaling and why is it important for EC2 workloads?
13 What are placement groups and when would you use them?
14 What is an EC2 launch template?
15 What is EC2 metadata and how is it used by applications?
16 What is the difference between public IP and Elastic IP?
17 How do you monitor EC2 performance?
18 What is the difference between vertical scaling and horizontal scaling?
19 What happens when an EC2 instance fails a status check?
20 What is the Nitro system in EC2?