- A
Increase the Lambda function's timeout to 30 seconds.
Increasing the timeout gives the HTTP request more time to complete, reducing timeouts.
- B
Increase the SQS queue's visibility timeout to 60 seconds.
Why wrong: Increasing visibility timeout could cause duplicate processing but does not fix the Lambda timeout.
- C
Decrease the SQS batch size to 1.
Why wrong: Decreasing batch size might reduce load but not address the timeout for individual invocations.
- D
Increase the Lambda function's reserved concurrency to 10.
Why wrong: Increasing concurrency would not help if the issue is the timeout duration per invocation.
Question 226 of 1,750
DOP-C02 Monitoring and Logging Practice Question
This DOP-C02 practice question tests your understanding of monitoring and logging. 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 DevOps engineer is troubleshooting an AWS Lambda function that processes messages from an Amazon SQS queue. The function is invoked successfully, but it frequently times out after 15 seconds. The function's CloudWatch Logs show that the timeout occurs while the function is making an HTTP request to an external API. The function's reserved concurrency is set to 5, and the SQS queue has a visibility timeout of 30 seconds. Which change would MOST effectively reduce the number of timeouts?
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
✓
Increase the Lambda function's timeout to 30 seconds.
Option A is correct because increasing the Lambda function timeout to 30 seconds gives the HTTP request more time to complete, directly addressing the timeout issue. Option B is wrong because increasing the visibility timeout does not affect the Lambda function's execution duration; it only controls how long SQS waits before making a message visible again after a failure. Option C is wrong because decreasing the batch size reduces the number of messages processed per invocation but does not solve the underlying HTTP request timeout. Option D is wrong because increasing reserved concurrency would allow more concurrent invocations but does not fix the timeout for individual invocations; the function still times out after 15 seconds.
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.
- ✓
Increase the Lambda function's timeout to 30 seconds.
Why this is correct
Increasing the timeout gives the HTTP request more time to complete, reducing timeouts.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Increase the SQS queue's visibility timeout to 60 seconds.
Why it's wrong here
Increasing visibility timeout could cause duplicate processing but does not fix the Lambda timeout.
- ✗
Decrease the SQS batch size to 1.
Why it's wrong here
Decreasing batch size might reduce load but not address the timeout for individual invocations.
- ✗
Increase the Lambda function's reserved concurrency to 10.
Why it's wrong here
Increasing concurrency would not help if the issue is the timeout duration per invocation.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
What to study next
Got this wrong? Here's your next step.
Identify which DOP-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.
- →
Monitoring and Logging — study guide chapter
Learn the concepts, then practise the questions
- →
Monitoring and Logging practice questions
Targeted practice on this topic area only
- →
All DOP-C02 questions
1,750 questions across all exam domains
- →
AWS Certified DevOps Engineer Professional DOP-C02 study guide
Full concept coverage aligned to exam objectives
- →
DOP-C02 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related DOP-C02 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Configuration Management and IaC practice questions
Practise DOP-C02 questions linked to Configuration Management and IaC.
Resilient Cloud Solutions practice questions
Practise DOP-C02 questions linked to Resilient Cloud Solutions.
Monitoring and Logging practice questions
Practise DOP-C02 questions linked to Monitoring and Logging.
Incident and Event Response practice questions
Practise DOP-C02 questions linked to Incident and Event Response.
Security and Compliance practice questions
Practise DOP-C02 questions linked to Security and Compliance.
SDLC Automation practice questions
Practise DOP-C02 questions linked to SDLC Automation.
DOP-C02 fundamentals practice questions
Practise DOP-C02 questions linked to DOP-C02 fundamentals.
DOP-C02 scenario practice questions
Practise DOP-C02 questions linked to DOP-C02 scenario.
DOP-C02 troubleshooting practice questions
Practise DOP-C02 questions linked to DOP-C02 troubleshooting.
Practice this exam
Start a free DOP-C02 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this DOP-C02 question test?
Monitoring and Logging — This question tests Monitoring and Logging — 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's timeout to 30 seconds. — Option A is correct because increasing the Lambda function timeout to 30 seconds gives the HTTP request more time to complete, directly addressing the timeout issue. Option B is wrong because increasing the visibility timeout does not affect the Lambda function's execution duration; it only controls how long SQS waits before making a message visible again after a failure. Option C is wrong because decreasing the batch size reduces the number of messages processed per invocation but does not solve the underlying HTTP request timeout. Option D is wrong because increasing reserved concurrency would allow more concurrent invocations but does not fix the timeout for individual invocations; the function still times out after 15 seconds.
What should I do if I get this DOP-C02 question wrong?
Identify which DOP-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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Keep practising
More DOP-C02 practice questions
- A company uses AWS CodePipeline with a multi-branch strategy. A new feature branch triggers a pipeline that runs unit te…
- A development team uses AWS CodeBuild to compile a Java application and run unit tests. The build takes 30 minutes, but…
- A company uses AWS CodePipeline with multiple stages: Source (Amazon S3), Build (AWS CodeBuild), and Deploy (AWS CodeDep…
- A company uses AWS CodeCommit for source control. Developers frequently push large binary files (e.g., compiled JARs) to…
- A company runs a Stateful application on EC2 that requires sticky sessions. They use an ALB with duration-based stickine…
- An organization uses AWS CodePipeline to orchestrate deployments to multiple environments (dev, test, prod). Each enviro…
Last reviewed: Jun 20, 2026
This DOP-C02 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 DOP-C02 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.