S3 Flashcards
(52 cards)
What is S3?
Simple Storage Service
Where are files stored in S3?
Buckets (similar to folders)
What is the maximum object size in S3?
5 TB
What is the minimum object size in S3?
0 bytes
Is an S3 bucket name globally unique across all AWS accounts?
Yes, namespace already in use are not available.
S3 URLS follow a naming convention. Is this correct?
Https://bucketname.s3.region.amazonaws.com/keyname
Correct. The URL always has the bucket name, region, and keyname (filename).
What is the success code when uploading a file to an S3 bucket?
HTTP 200
What is a key in S3?
The name of an object (filename). An example is picture.jpg.
What is the value in S3?
The data itself, which is made up of a sequence of bytes.
What is a version ID in S3?
Multiple versions of the same object
What is metadata?
Data about the data you are storing.
An example is content-type, last modified, etc.
True or false: S3 is data that is spread across multiple devices and facilities to ensure availability and durability.
True
What is the guaranteed uptime of S3 availability?
x4 nines
99.95% - 99.99%
What is the guaranteed durability for data stored in S3?
x11 nines
99.999999999%
What is S3 Standard?
1) Data stored redundantly across 3 or more availability zones
High availability of 99.99%
Durability of 99.999999999%
2) Designed for frequent access
3) Suitable for most workload
Websites, content distribution, mobile/gaming apps, and big data analytics.
Is there tiered storage in S3?
Yes, they are known as S3 classes.
True or false: you can install an OS or run a DB in S3?
False. It’s only for storing files.
Is storage in S3 limited?
No, it’s unlimited.
True or false: S3 buckets uses an universal namespace.
True
What level does an object ACL work on?
The individual object level
What level does a bucket policy work on?
The entire bucket level
True or false: creating a bucket namespace is at the global not the regional level.
True. The bucket namespace is universal and spans all aws accounts.
What are the three steps to make an object publicly accessible?
Enable the following:
Bucket Level
1) Under bucket settings: Uncheck Block Public Access
2) Under Object Ownership, choose ACLs enabled
Object Level
3) Under the object, choose Make public
Are S3 buckets private by default?
Yes