AWS S3 interview questions

26) What is Amazon Macie?
Amazon Macie is an AI-powered security service that helps you prevent data loss by automatically discovering, classifying, and protecting sensitive data stored in Amazon S3. Amazon Macie uses machine learning to recognize sensitive data such as personally identifiable information (PII) or intellectual property, assigns a business value, and provides visibility into where this data is stored and how it is being used in your organization. You can use Amazon Macie to protect against security threats by continuously monitoring your data and account credentials. Amazon Macie gives you an automated and low touch way to discover and classify your business data.

27) What is the difference between a bucket and an access point?
A bucket is the logical storage container for your objects while an access point provides access to the bucket and its contents. An access point is a separate Amazon resource created for a bucket with an Amazon Resource Name (ARN), hostname an access control policy, and a network origin control.

28) How do I configure Block Public Access (BPA) settings on my access point?
You can configure the Block Public Access (BPA) settings uniquely on each access point at creation time. We are currently working to support changing BPA settings after creation time. Amazon S3 applies the most restrictive combination of the access point-level, bucket-level, and account-level settings.

29) How durable is Amazon S3?
Amazon S3 Standard, S3 Standard–IA, S3 One Zone-IA, S3 Glacier, and S3 Glacier Deep Archive are all designed to provide 99.999999999% durability of objects over a given year. This durability level corresponds to an average annual expected loss of 0.000000001% of objects.

30) What is Versioning?
Versioning allows you to preserve, retrieve, and restore every version of every object stored in an Amazon S3 bucket. Once you enable Versioning for a bucket, Amazon S3 preserves existing objects anytime you perform a PUT, POST, COPY, or DELETE operation on them. By default, GET requests will retrieve the most recently written version. Versioning offers an additional level of protection by providing a means of recovery when customers accidentally overwrite or delete objects.You can start using Versioning by enabling a setting on your Amazon S3 bucket. When a user performs a DELETE operation on an object, subsequent simple (un-versioned) requests will no longer retrieve the object. However, all versions of that object will continue to be preserved in your Amazon S3 bucket and can be retrieved or restored.

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