Domain 1: Design Resilient Architectures

1. B. This is a common question on AWS exams, and relates to your understanding of the various S3 classes. S3 and S3-IA have the same durability, but the availability of S3 is one 9 greater than S3-IA. S3 has 99.99 availability, while S3-IA has 99.9 availability. Glacier has much greater first-byte latency than S3, so both C and D are false.
2. B. Anytime the primary consideration is storage with a local data presence—where data must be stored or seen to be stored locally—a storage gateway gives you the best option. This reduces the choices to B and D. B will store the files in S3 and provide local cached copies, while D will store the files locally and push them to S3 as a backup. Since management is concerned about storage in the cloud of primary files, B is the best choice; local files are the primary source of data, while still allowing the company to experiment with cloud storage without “risking” its data being stored...