Chapter 8: The Core Storage Services
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B. Bucket names must be globally unique across AWS, irrespective of Region. The length of the bucket name isn’t an issue since it’s between 3 and 63 characters long. Storage classes are configured on a per-object basis and have no impact on bucket naming.
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A, C. STANDARD_IA and GLACIER storage classes offer the highest levels of redundancy and are replicated across at least three Availability Zones. Due to their low level of availability (99.9 and 99.5 percent, respectively), they’re the most cost-effective for infrequently accessed data. ONEZONE_IA stores objects in only one Availability Zone, so the loss of that zone could result in the loss of all objects. The STANDARD and INTELLIGENT_TIERING classes provide the highest levels of durability and cross-zone replication but are also the least cost-effective for this use case.
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A, D. S3 is an object storage service, while EBS is a block storage service that stores volumes...
