Storage Services Flashcards

Which feature of Amazon S3 helps protect against accidental deletion by keeping multiple versions of an object?

Answer: S3 Versioning

S3 Versioning preserves every version of an object, allowing recovery from accidental deletions or overwrites.

A media company needs shared file storage accessible by Windows-based EC2 instances using the SMB protocol. Which service should they use?

Answer: Amazon FSx for Windows File Server

Amazon FSx for Windows File Server provides fully managed Windows-native shared storage using the SMB protocol.

Which S3 storage class is designed for data that is accessed less than once a year and can tolerate hours of retrieval time at the lowest cost?

Answer: S3 Glacier Deep Archive

S3 Glacier Deep Archive is AWS's lowest-cost storage class, designed for data retained for 7–10 years with 12-hour retrieval times.

What happens to data stored on an EC2 Instance Store if the underlying host fails?

Answer: Data is permanently lost

Instance Store is ephemeral storage tied to the physical host; if the host fails or the instance stops, all data is permanently lost.

Which AWS Storage Gateway mode is best for providing on-premises applications with cloud-backed file storage using NFS or SMB?

Answer: File Gateway

File Gateway presents cloud-backed NFS/SMB file shares to on-premises applications, transparently storing files in S3.

A company wants to enforce WORM (Write Once Read Many) compliance on S3 objects to meet regulatory requirements. Which feature enables this?

Answer: S3 Object Lock

S3 Object Lock enforces WORM protection, preventing objects from being deleted or overwritten for a defined retention period.

Which service would you use to transfer petabytes of data to AWS when internet bandwidth is too limited?

Answer: AWS Snowball

AWS Snowball is a physical data transfer appliance used to migrate large datasets (petabyte-scale) to AWS when internet transfer is impractical.