The answer is to increase the Lambda function timeout and monitor DynamoDB write capacity to prevent throttling. This is correct because when a Lambda function processes SQS messages and writes to DynamoDB, timeouts typically occur either because the function’s execution duration exceeds its configured limit or because DynamoDB write capacity is exhausted, causing retries that further delay processing. On the AWS Certified Data Engineer Associate DEA-C01 exam, this scenario tests your understanding of how Lambda’s synchronous invocation model interacts with SQS and DynamoDB—a common trap is assuming that adjusting queue settings like visibility timeout or queue type will fix a processing bottleneck, when the root cause is almost always the function’s runtime or downstream resource limits. A useful memory tip is “Timeout or Throttle, not Queue or Bottle”—meaning you should first check Lambda’s timeout and DynamoDB’s write capacity before touching SQS configurations.
DEA-C01 Data Ingestion and Transformation Practice Question
This DEA-C01 practice question tests your understanding of data ingestion and transformation. 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 uses AWS Lambda to process messages from an Amazon SQS queue. The messages contain JSON payloads that need to be transformed and written to an Amazon DynamoDB table. Recently, the Lambda function has been timing out and messages are being sent to the dead-letter queue (DLQ). What is the BEST way to troubleshoot and resolve this issue?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Increase the Lambda function timeout and monitor DynamoDB write capacity to ensure it is not throttling.
Option B is correct because increasing the Lambda timeout and checking DynamoDB write capacity are the first steps to address timeouts. Option A is wrong because increasing SQS visibility timeout alone does not help if Lambda cannot process within the timeout. Option C is wrong because converting to a FIFO queue does not solve timeout issues. Option D is wrong because using a standard queue does not affect processing time.
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.
✗
Use a standard SQS queue instead of a DLQ to reprocess failed messages automatically.
Why it's wrong here
DLQ is for troubleshooting; standard queue does not help with timeouts.
✓
Increase the Lambda function timeout and monitor DynamoDB write capacity to ensure it is not throttling.
Why this is correct
Increasing timeout allows longer processing; DynamoDB throttling could cause delays.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Switch the SQS queue to a FIFO queue to ensure exactly-once processing.
Why it's wrong here
FIFO is for ordering, not for solving timeouts.
✗
Increase the visibility timeout of the SQS queue to 30 minutes.
Why it's wrong here
Visibility timeout affects message redelivery, not Lambda execution time.
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 DEA-C01 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.
Data Ingestion and Transformation — This question tests Data Ingestion and Transformation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Increase the Lambda function timeout and monitor DynamoDB write capacity to ensure it is not throttling. — Option B is correct because increasing the Lambda timeout and checking DynamoDB write capacity are the first steps to address timeouts. Option A is wrong because increasing SQS visibility timeout alone does not help if Lambda cannot process within the timeout. Option C is wrong because converting to a FIFO queue does not solve timeout issues. Option D is wrong because using a standard queue does not affect processing time.
What should I do if I get this DEA-C01 question wrong?
Identify which DEA-C01 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.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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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