Storage (S3)

Question 1

What are the minimum and maximum sizes of files that can be stored on S3?

Answer 1

0 bytes to 5 TB

Question 2

Glacier retrieval times are configurable in what range?

Answer 2

Minutes to hours

Question 3

How long can the Glacier Deep Archive retrieval times be?

Answer 3

12 hours or more

Question 4

What are the components of an S3 object?

Answer 4

A key and a value
The value consists of a data blob, a version ID, any metadata (eg tags), and subresources
Subresources are bucket specific and can include bucket policies, CORS, and transfer acceleration

Question 5

What is the difference between a bucket policy and an access control list?

Answer 5

Bucket policies are applied to entire buckets, whereas access control lists are applied at the object level

Question 6

Name the six S3 storage classes

Answer 6

a) standard
b) infrequent access
c) one zone infrequent access
d) intelligent tiering
e) glacier
f) glacier archive

Question 7

How many read requests can S3 process per second? How many write requests?

Answer 7

5,500 read requests per second

3,500 write requests per second

Question 8

Which cipher does AWS use for server-side encryption of S3 buckets?

Answer 8

256-bit Advanced Encryption Standard (AES-256)

Question 9

What is the url format for static websites hosted on S3?

Answer 9

http:bucketname.s3-website-region.amazonaws.com

Question 10

What is the maximum object size that can be uploaded into S3 via a single PUT operation using the SDKs, REST API, or CLI? What about via a multipart upload?

What about via the console?

Answer 10

5 GB, 5 TB

160 GB

Question 11

Which three encryption methods are supported in S3?

Answer 11

a) SSE-C (customer managed)
b) SSE-S3 (using S3 managed keys)
c) SSE-KMS (using customer managed keys)