Question 320
Two cloud decisions must be made in the stated order. Finding 1: An ordering service must hold tasks while its processing workers are temporarily unavailable, without losing queued work. Finding 2: An application needs to send one status notification to several independently subscribed endpoints. Which two-part response addresses both findings in order?
Explanation
Correct Answer
For finding 1: SQS buffers messages so producers and workers do not need to be available at the same instant. For finding 2: SNS distributes published messages to multiple subscribers instead of acting only as a worker backlog. Both actions are required.
Incorrect Answers
For finding 2: SNS distributes published messages to multiple subscribers instead of acting only as a worker backlog. That action addresses a different situation: A developer assumes placing messages in SQS will automatically email customers without configuring any downstream consumer.
For finding 1: SQS buffers messages so producers and workers do not need to be available at the same instant. That action addresses a different situation: A system should route events from multiple AWS services to different targets according to event rules and filtering.
The actions are reversed. The correct order is (1) Use Amazon SQS to decouple producers and consumers through a managed message queue. (2) Use Amazon SNS topics with supported subscriptions for fan-out notifications.






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