Q. Your application stores critical data in Amazon Simple Storage Service (Amazon S3), which must be protected against inadvertent or intentional deletion. How can this data be protected?
A. Versioning protects data against inadvertent or intentional deletion by storing all versions of the object, and MFA Delete requires a one-time code from a Multi-Factor Authentication (MFA) device to delete objects. Cross-region replication and migration to the Amazon Glacier storage class do not protect against deletion. Vault locks are a feature of Amazon
Glacier, not a feature of Amazon S3.
Q. Your company stores documents in Amazon Simple Storage Service (Amazon S3), but it wants to minimize cost. Most documents are used actively for only about a month, then much less frequently. However, all data needs to be available within minutes when requested. How can you meet these requirements?
A. Migrating the data to Amazon S3 Standard-IA after 30 days using a lifecycle policy is correct. Amazon S3 RRS should only be used for easily replicated data, not critical data. Migration to Amazon Glacier might minimize storage costs if retrievals are infrequent,
but documents would not be available in minutes
Q. Amazon Simple Storage Service (Amazon S3) will supports folder structure?
A. There is no folder structure in Amazon S3.
Q. To have a record of who accessed your Amazon Simple Storage Service (Amazon S3) data and from where, what you should do ?
A. Amazon S3 server access logs store a record of what requestor accessed the objects in your bucket, including the requesting IP address.