S3

Question 1

S3 Use Cases

Answer 1

Backup and Storage
DR
Archive
Hybrid Cloud Storage
App hosting
Media hosting
Data lake & big data analytics
Software Delivery
Static Website

Question 2

Buckets

Answer 2

Top level directories

Question 3

Files in S3 aka

Answer 3

objects

Question 4

What level do buckets reside at?

Answer 4

Region

Question 5

Are S3 Buckets global or regional?

Answer 5

Regional

Question 6

Object key aka

Answer 6

File path

Question 7

Object key composed of…

Answer 7

prefix + object name

Question 8

S3 Max object size

Answer 8

5TB

Question 9

When is “multi-part upload” needed

Answer 9

Files larger than 5GB

Question 10

S3 security methods (3)

Answer 10

User-based (IAM policies)
Resource-based (Bucket policies, ACL’s)
Encryption

Question 11

Document format for S3 policies

Answer 11

JSON

Question 12

S3 policies can…

Answer 12

Grant public access
Force encryption at upload
Grant access to another account

Question 13

What is needed to make a bucket public?

Answer 13

S3 policy

Question 14

Versioning

Answer 14

First is one and then overwriting a file increases the version

Question 15

Benefits of versioning

Answer 15

Protects against deletion
Easy roll back

Question 16

Reason for null versions

Answer 16

Files that existed before enabling versioning

Question 17

Cross-region replication use (3)

Answer 17

Compliance
Lower latency access
Replication across accounts

Question 18

Same-region replication uses (2)

Answer 18

Logs
Replication between production and test

Question 19

How many 9’s of durability for S3?

Answer 19

11 9’s

Question 20

S3 availability percentage

Answer 20

99.99% (53 mins of downtime)

Question 21

Server side encyrption

Answer 21

Server encrypts after receiving file

Question 22

Client-side encryption

Answer 22

Encrypts before uploading

Question 23

Which encryption type is always on?

Answer 23

Server-side

Question 24

Customer responsibility for S3 encryption

Answer 24

Encryption at rest and in transit

Question 25

AWS Snow purposes

Answer 25

Portable devices to collect and process data at the edge, and migrate to/from AWS

Question 26

Snowball edge purpose

Answer 26

Move TB or PB in and out of AWS
Pay per transfer job

Question 27

Snowball edge capacity

Answer 27

Storage optimized: 80TB
Compute optimized: 42TB or 28TB NVME

Question 28

Snowcone

Answer 28

Rugged device
Light
Good for space constraints

Question 29

Snowcone capacity

Answer 29

8TB
Snowcone SSD 14TB

Question 30

Snowmobile

Answer 30

Truck
Exabytes of migration

Question 31

Snowmobile capacity

Answer 31

100PB of capacity

Question 32

Edge location

Answer 32

No internet access (trucks, ships, mines)

Question 33

Snowball edge/snowcone use cases

Answer 33

Preprocess data
ML at the edge
Transcoding media streams

Question 34

Snowball long term deployment options

Answer 34

1-3 years

Question 35

Do Snow devices have processors?

Answer 35

Yes

Question 36

AWS OpsHub

Answer 36

GUI Client to manage Snow devices

Question 37

Are AMI’s available for snow devices?

Answer 37

Yes

Question 38

AWS Storage Gateway

Answer 38

Bridge on-prem to storage cloud (EBS, S3, Glacier)