The correct answer is to adjust the Maximum retries setting in the Lambda event source mapping. This configuration, found within the Lambda-SQS integration, directly controls how many times Lambda will retry a failed message batch before discarding it or sending it to a dead-letter queue, with a default value of three. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this question tests your understanding of the event source mapping layer, which is distinct from the SQS queue’s own redrive policy or visibility timeout—a common trap where candidates confuse queue-level settings with Lambda’s retry behavior. Remember that the SQS maxReceiveCount governs the queue’s internal retries, while Lambda’s Maximum retries governs the function’s retry attempts after a processing failure. A useful memory tip: think of the event source mapping as the “bridge” that handles retries for the Lambda function, not the queue itself.
SAP-C02 Continuous Improvement for Existing Solutions Practice Question
This SAP-C02 practice question tests your understanding of continuous improvement for existing solutions. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company is using AWS Lambda functions to process data from an SQS queue. The Lambda function sometimes fails due to transient errors, but the messages are not being retried. Which configuration should the company check to ensure proper retry behavior?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Adjust the Maximum retries setting in the Lambda event source mapping
Option D is correct because Lambda's event source mapping for SQS has a 'Maximum retries' setting (default 3) that controls how many times Lambda will retry a failed message batch. Option A is wrong because the SQS queue's 'Default visibility timeout' affects how long a message is hidden after being received, not the number of retries. Option B is wrong because the 'maxReceiveCount' is a SQS redrive policy property, not directly for Lambda retries. Option C is wrong because the DLQ property is for sending failed messages to a dead-letter queue, not for controlling retry count.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Configure the Lambda function's dead-letter queue (DLQ)
Why it's wrong here
DLQ is for sending failed messages after retries are exhausted.
✓
Adjust the Maximum retries setting in the Lambda event source mapping
Why this is correct
This setting directly controls how many times Lambda retries failed messages from SQS.
Related concept
Read the scenario before looking for a memorised answer.
✗
Set the SQS queue's redrive policy maxReceiveCount to a higher value
Why it's wrong here
maxReceiveCount is for SQS redrive to DLQ, not Lambda retry.
✗
Increase the SQS queue's Default visibility timeout
Why it's wrong here
Visibility timeout controls message hiding duration, not retry count.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which SAP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Continuous Improvement for Existing Solutions — This question tests Continuous Improvement for Existing Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Adjust the Maximum retries setting in the Lambda event source mapping — Option D is correct because Lambda's event source mapping for SQS has a 'Maximum retries' setting (default 3) that controls how many times Lambda will retry a failed message batch. Option A is wrong because the SQS queue's 'Default visibility timeout' affects how long a message is hidden after being received, not the number of retries. Option B is wrong because the 'maxReceiveCount' is a SQS redrive policy property, not directly for Lambda retries. Option C is wrong because the DLQ property is for sending failed messages to a dead-letter queue, not for controlling retry count.
What should I do if I get this SAP-C02 question wrong?
Identify which SAP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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