EC2

Question 1

what is a Placement Group?

Answer 1

A logical grouping of EC2s on a same AZ to provide network optimization and low network latency

Question 2

What is a User Data?

Answer 2

Lets us to bootstrap the custom scripts to run on an instance

Question 3

Does EC2 termination protection is turned on by default?

Answer 3

No

Question 4

what is EBS backed Instance?

Answer 4

EBS volume will be remain as is on termination of Instance by default.

Question 5

Can you encrypt EBS root volumes of default AMIs?

Answer 5

Yes, you can also use thrid party tools such as BitLocker.

Question 6

What is Instance MetaData?

Answer 6

To get information about the instance.

CURL http://169.254.169.254/latest/meta-data

Question 7

Can you see bootstrapped user data of an instance?

Answer 7

Yes, CURL http://169.254.169.254/latest/user-data

Question 8

EC2 Clustered placement groups

Answer 8

Grouping of instances within a single AZ. Only certain instances can be launched into a clustered PG

Question 9

Spread Placement Group

Answer 9

Group of instances that are each placed on distinct underlying hardware