Storage Technologies Flashcards
Where are S3 buckets defined?
At the region level
Can you use uppercase or underscore in an S3 name?
No
Can the S3 object start with the prefix xn–?
No
Can the S3 object end with -s3alias?
No
What is the KEY in AWS S3?
It is the filename including any sub folders under the bucket.
What is the PREFIX in AWS S3?
They key is composed of all the sub folders.
Can you upload files to S3 larger than 5GB?
Yes, but you must use multi-part upload.
Does suspending versioning delete previous versions?
No
What version number is given to files that are not versioned prior to enabling versioning?
They will have a version “null” value
Are existing objects replicated when you enable replication in S3?
No, Only new files are replicated.
If you want to replicate existing objects in S3 after enabling versioning, what can you use?
S3 Batch Replication
Are delete markers included in S3 replication?
Not by default. This must be enabled.
What is S3 Glacier Instant Retrieval?
90 day minimum retention
millisecond retrieval
Great for data accessed once a quarter
What is S3 Glacier Flexible Retrieval?
90 day minimum retention
Expedited - 1 to 5 minutes
Standard - 3-5 hours
Bulk - 5 - 12 hours
When using a lifecycle policy, where do you configure objects to transition to another storage class?
Using transition actions
Can you schedule items to be deleted using lifecycle policies?
Yes. This is done using expiration actions.
At what file size is multipart upload recommended?
100MB
How can you retrieve only partial data from an S3 file?
You can use AWS Byte Range Fetches
What can you use in S3 to retrieve less data by using SQL to perform server-side filtering?
S3 SELECT or GLACIER SELECT
What is SSE-S3 encryption?
This is enabled by default and uses AWS managed keys
What is SSE-KMS?
This is when you want to leverage KMS to manage encryption keys
What is SSE-C?
When you want to manage your own encryption keys.
How can you force TLS encryption in S3?
Use a buckey policy to deny any getObject requests that have a condition of secureTransport = “false”
What is a good use case for S3 access points?
When you have folders in a bucket that you want to limit access to. You can have an access point for each folder that ties back to a specific group of users. This simplifies S3 management.
