Amazon S3

Question 1

What’s the difference between durability and availability?

Answer 1

Both are ways to measure data security. The first ones measures data protection agains unexpected loss and corruption.

The second one measure the amount of time in which data is available.

Question 2

What is a S3 feature that protects against accidental deletion or overwrite?

Answer 2

S3 versioning.

Question 3

What is S3 MFA Delete?

Answer 3

MFA Delete is a S3 feature that requires the owner of the bucket to permanently delete an object or to change the bucket versioning state.

Question 4

What are the available methods of bucket encryption?

Answer 4

• SSE-S3;
• SSE-KMS;
• SSE-C;
• Client-side encryption.

Question 5

What is S3 Multipart upload?

Answer 5

It’s a mechanism that split file contents and upload them in any order.

Performance benefits.

Must be used for objects which limit is bigger than 5 gb.

Question 6

What is S3 Transfer Acceleration?

Answer 6

Is a feature that uses Amazon CloudFront to improve performance.

Question 7

What is S3 and Glacier Select?

Answer 7

Is a S3 feature to use SQL to find compressed files in Zip files.

Question 8

What is S3 Object Lambda?

Answer 8

Feature that uses Lambdas to create middlewares between file retrieval.