Q30

Answer :
All AMIs are categorized as either backed by Amazon EBS or backed by instance store.
Backed by Amazon EBS – means that the root device for an instance launched from the AMI is an Amazon EBS volume created from an Amazon EBS snapshot.
Backed by instance store – means that the root device for an instance launched from the AMI is an instance store volume created from a template stored in Amazon S3.
Root device size limit for –
Amazon EBS – Backed is 16 TiB
Amazon Instance Store-Backed is 10 GiB

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