DVA-C02 Development with AWS Services Practice Question
This DVA-C02 practice question tests your understanding of development with aws services. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 developer needs to send large files (up to 5 GB) from a web application to Amazon S3. The application runs on EC2 instances. Which approach is MOST efficient and reliable?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use S3 multipart upload to upload the file in parts.
Option C is correct because multipart upload is recommended for files over 100 MB and allows parallel uploads with retry capability. Option A is wrong because uploading as a single operation is unreliable for large files. Option B is wrong because EC2 instance store is temporary and not durable. Option D is wrong because S3 Transfer Acceleration speeds up transfers but does not improve reliability for large files; multipart upload is still better.
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.
✗
Save the file to EC2 instance store and then copy to S3.
Why it's wrong here
Instance store is ephemeral and not durable; this adds complexity.
✗
Upload the file as a single S3 PutObject operation.
Why it's wrong here
Single uploads for large files can fail and require re-uploading the entire file.
✓
Use S3 multipart upload to upload the file in parts.
Why this is correct
Multipart upload improves throughput and allows retrying failed parts.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use S3 Transfer Acceleration to upload the file.
Why it's wrong here
Transfer Acceleration speeds up uploads but does not provide reliability benefits like multipart.
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: Use S3 multipart upload to upload the file in parts. — Option C is correct because multipart upload is recommended for files over 100 MB and allows parallel uploads with retry capability. Option A is wrong because uploading as a single operation is unreliable for large files. Option B is wrong because EC2 instance store is temporary and not durable. Option D is wrong because S3 Transfer Acceleration speeds up transfers but does not improve reliability for large files; multipart upload is still better.
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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