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3. Third Class - Amazon Ec2.md

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Questions

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  1. What is S3 (simple Storage Service) ?
    Why do we need s3

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2. How is this s3 useful to us ?

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3. Is there a limit on data which we can store in s3 ?

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4. Do we need to choose any particular region where we want to create S3 ?

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5. What is a S3 bucket and S3 Objects?

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6. Why AWS doesn't allows duplicate bucket name ?

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7. Why do we enable ACL (Access Control List ) in S3 ?

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8. Can we have a bucket name in upper case letters ?

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9. What does ARN stands for ?
amazon resource name

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10. How can you enable public access at S3 object level ?
or if you face Access denied when using the s3 url and if the bucket is public , then you need to check whether the object is public as well or not .

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11. Why do we require Versioning  in S3  ?
How can we enable a versioning for s3 objects ?

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12. If we enable versioning , then does it applies to object level or the entire bucket level ?

  • Bucket Level

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13. Can you retreive deleted object from s3 bucket ?
Yes - iff the versioning is enabled .

What is a delete marker tag ?

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14. How can I restore my deleted object from version history ?
And How can we permanently delete an object ?

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15. IS there any retention time frame to restore after delete ?
No - it will be always available to you .

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16. How do we replicate data across Regions ?
Why is there a need for data replication across the Regions ?

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17. What is a Cross Region replication wrt S3 buckets?

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18. If i have enabled the replication from US S3 to Australia S3 via Cross Region Replication Rule ?
Will it  also automatically enable  replication from Australia to US ?

  • No , you need to explicitly enable it from Australia to US as well.

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19. Can we have destination bucket from another AWS account for replication ?

  • Yes

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20. What is an IAM Role ?
Role is a permission which you give to access one resource from another resource.

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21. What is transfer acceleration wrt to s3 ? And how does it works ?

Time : 02:03:00 22. How to host static website on s3?