AIncorrect
S3 is block storage that you mount directly as the OS disk of an EC2 instance.
Block storage used as an EC2 OS disk is Amazon EBS.
S3 is object storage, so the statement is wrong and incorrect.
Which of the following statements about Amazon S3 are correct? Choose 2.
1 / 1
Select all that apply
CorrectB, D
Explanation
Choosing 2 correct statements about Amazon S3.
- 1「statements about Amazon S3」The correct understanding of durability, capacity, storage type, and lifecycle is being tested
BCorrect
S3 has very high durability and stores data redundantly across multiple locations.
Correct. S3 has eleven nines (99.999999999%) of high durability and stores data redundantly across multiple locations.
CIncorrect
The total capacity of objects you can store in S3 has a strict limit of a few GB.
S3 has effectively no limit on the total capacity you can store in a bucket, and can hold large amounts of data.
The 'few-GB limit' statement is wrong, so it is incorrect.
DCorrect
With a lifecycle policy, you can automatically move old objects to a cheaper tier.
Correct. With a lifecycle policy, you can automatically move objects to a cheaper tier based on age or delete them.
EIncorrect
S3 stores data on only one disk, so its durability is low.
S3 stores data redundantly across multiple locations and has very high durability.
The statement that it stores on only one disk with low durability is wrong, so it is incorrect.
Key Takeaway
S3 essentials: object storage / eleven nines of high durability with redundancy / effectively unlimited capacity / automatic tiering via lifecycle. Block storage for an OS disk is EBS.