Storage Services Flashcards

A company needs to store database backups that will be accessed once a month for compliance audits. Which S3 storage class offers the best cost savings?

Answer: S3 Standard-IA

S3 Standard-IA is designed for infrequently accessed data that still needs millisecond retrieval, making it ideal for monthly compliance backups.

Which AWS service provides a fully managed NFS file system that can be mounted by multiple EC2 instances simultaneously?

Answer: Amazon EFS

Amazon EFS (Elastic File System) is a fully managed NFS file system that supports concurrent access from multiple EC2 instances.

A developer wants to serve static website content globally with low latency. Which combination of services is most appropriate?

Answer: S3 + CloudFront

S3 hosts static website files and CloudFront distributes them via a global CDN, minimizing latency for worldwide users.

Which S3 feature allows you to automatically move objects to cheaper storage tiers as they age?

Answer: S3 Lifecycle Policies

S3 Lifecycle Policies automate transitions of objects between storage classes based on age, reducing storage costs over time.

What is the maximum size of a single object that can be stored in Amazon S3?

Answer: 5 TB

A single S3 object can be up to 5 TB in size; objects larger than 100 MB should use multipart upload.

A company needs block storage that persists independently of an EC2 instance's lifecycle. Which service should they use?

Answer: Amazon EBS

Amazon EBS volumes persist independently of EC2 instance lifecycles and can be detached and reattached to other instances.

Which AWS service is best suited for archiving rarely accessed data with retrieval times ranging from minutes to hours?

Answer: S3 Glacier Flexible Retrieval

S3 Glacier Flexible Retrieval is designed for archival data with configurable retrieval times from minutes to 12 hours at very low cost.