AWS AWS Application Integration and Messaging 4

Question 1

A company needs to process messages in strict FIFO order and ensure each message is processed exactly once. Which SQS queue type should they use?

Accepted Answer

FIFO Queue

Answer

SQS FIFO queues guarantee first-in-first-out ordering and exactly-once processing, unlike Standard queues which offer best-effort ordering.

Question 2

Which Amazon EventBridge feature allows you to replay archived events to a target to debug or reprocess historical data?

Accepted Answer

Event Replay

Answer

EventBridge Event Replay allows you to replay archived events from a specific time window to an event bus, enabling reprocessing and debugging.

Question 3

An application publishes messages to an SNS topic. Some subscribers need messages delivered immediately, while others need batch processing. What is the best architecture?

Accepted Answer

Fan out from SNS to both Lambda and SQS subscribers

Answer

SNS fan-out allows a single topic to deliver to Lambda for immediate processing and SQS for buffered batch processing simultaneously.

Question 4

What is the maximum retention period for messages in an Amazon SQS queue?

Accepted Answer

14 days

Answer

Amazon SQS retains messages for a configurable period between 1 minute and 14 days, with the default being 4 days.

Question 5

A developer wants to delay the delivery of new messages to an SQS queue by 90 seconds to allow backend systems to prepare. Which feature enables this?

Accepted Answer

Delivery Delay

Answer

SQS Delivery Delay (queue-level) or message-level delay timers postpone when a message first becomes visible to consumers by up to 15 minutes.

AWS Practice Test

AWS Practice Test

AWS AWS Application Integration and Messaging 4