Question 790
A professional architect is reviewing two independent workstreams. Requirement A: A business database needs a low-downtime migration from on-premises PostgreSQL to Amazon RDS PostgreSQL. Requirement B: A monolithic Windows process has been decomposed into HTTP services that can run in managed containers without operating its own servers. Choose TWO actions that directly address these separate problems.
Explanation
Correct Answers
This action meets the independently stated requirement B: A monolithic Windows process has been decomposed into HTTP services that can run in managed containers without operating its own servers. Fargate can run supported ECS container tasks without customer-managed worker hosts. A direct acceptance check is: Services scale independently and teams do not manage EC2 container worker hosts.
This action meets the independently stated requirement A: A business database needs a low-downtime migration from on-premises PostgreSQL to Amazon RDS PostgreSQL. AWS DMS can move data using full load and ongoing CDC for supported sources. A direct acceptance check is: Destination rows converge with source changes and validated CDC lag allows the final switchover.
Incorrect Answers
This action targets a different technical need: A legacy database must meet high transactional availability and can accept conversion to an Aurora-compatible engine. It does not replace either required solution in A or B. Aurora offers managed high availability features for supported relational engines; verify the two stated requirements independently rather than accepting an unrelated change.
This action targets a different technical need: A legacy billing system runs nightly ETL and downstream consumers need near-real-time invoice changes. It does not replace either required solution in A or B. CDC-based event distribution can modernize delayed batch data propagation; verify the two stated requirements independently rather than accepting an unrelated change.
This action targets a different technical need: An AWS Enterprise Support research customer needs to migrate tens of terabytes from a remote site with unreliable network links and can bring storage to a nearby AWS transfer facility. It does not replace either required solution in A or B. AWS Data Transfer Terminal allows eligible Enterprise Support customers to bring storage to an AWS transfer site; AWS Snowball Edge is no longer available to new customers; verify the two stated requirements independently rather than accepting an unrelated change.