SAA-C03 Dead-Letter Queue (DLQ) Practice Question
A claims workflow uses Amazon SQS. Poison messages are repeatedly failing and blocking useful retries. What should the architect configure? The architecture review board prefers a managed AWS-native control.
⚠ Common exam trap
A common mix-up: candidates confuse a DLQ with simply increasing retention or changing polling behavior, not realizing that poison messages require explicit isolation via a separate queue and a maxReceiveCount threshold to stop infinite retries.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A dead-letter queue with an appropriate maxReceiveCount
A dead-letter queue (DLQ) with an appropriate maxReceiveCount allows messages that repeatedly fail processing to be moved out of the source queue after a specified number of receive attempts. This prevents poison messages from blocking useful retries and is a fully managed AWS-native pattern. The architecture review board's preference for a managed solution is satisfied because SQS DLQs are a built-in feature requiring no custom code.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
A FIFO queue without a redrive policy
Why it's wrong here
FIFO ordering does not solve repeated processing failure.
- ✗
Short polling instead of long polling
Why it's wrong here
Polling mode changes request efficiency, not poison message handling.
- ✓
A dead-letter queue with an appropriate maxReceiveCount
Why this is correct
A DLQ isolates messages that fail repeatedly so they can be investigated without disrupting normal processing.
- ✗
A larger message retention period only
Why it's wrong here
Longer retention keeps messages longer but does not isolate poison messages.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SAA-C03 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SAA-C03 exam.