DVA-C02 Development with AWS Services Practice Question
This DVA-C02 practice question tests your understanding of development with aws services. 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.
Which THREE of the following are valid use cases for AWS Lambda? (Choose three.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Processing records from a DynamoDB Stream in real time
Correct: A, C, and E. Lambda can process S3 events, run scheduled tasks via CloudWatch Events, and process DynamoDB Streams. Option B is wrong because Lambda is not suitable for long-running applications; maximum execution time is 15 minutes. Option D is wrong because Lambda cannot be used as a web server like EC2; it is event-driven and stateless.
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.
✓
Processing records from a DynamoDB Stream in real time
Why this is correct
DynamoDB Streams can trigger Lambda for real-time processing.
Related concept
Read the scenario before looking for a memorised answer.
✓
Running a scheduled task every hour to clean up old database records
Why this is correct
CloudWatch Events can trigger Lambda on a schedule.
Related concept
Read the scenario before looking for a memorised answer.
✗
Serving as a web server for a static website
Why it's wrong here
Lambda is event-driven; static websites are better on S3 or CloudFront.
✗
Hosting a long-running web application with WebSockets
Why it's wrong here
Lambda has a 15-minute timeout and is not ideal for long-running connections.
✓
Processing objects uploaded to an S3 bucket
Why this is correct
S3 can trigger Lambda on object creation.
Related concept
Read the scenario before looking for a memorised answer.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Identify which DVA-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.
Development with AWS Services — This question tests Development with AWS Services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Processing records from a DynamoDB Stream in real time — Correct: A, C, and E. Lambda can process S3 events, run scheduled tasks via CloudWatch Events, and process DynamoDB Streams. Option B is wrong because Lambda is not suitable for long-running applications; maximum execution time is 15 minutes. Option D is wrong because Lambda cannot be used as a web server like EC2; it is event-driven and stateless.
What should I do if I get this DVA-C02 question wrong?
Identify which DVA-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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This DVA-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 DVA-C02 exam.
Question Discussion
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