The correct approach is to use AWS CLI with a script to filter and copy objects larger than 10 MB. This works because the AWS CLI’s `--query` parameter allows you to filter the output of `aws s3api list-objects` based on object size, and a simple shell script can then iterate over the filtered list to run `aws s3 cp` for each matching object. On the AWS Certified Data Engineer Associate DEA-C01 exam, this scenario tests your understanding of combining CLI filtering with automation for one-time batch operations, a common task when migrating or processing existing data. A frequent trap is confusing this with S3 Replication (which is continuous) or Lambda triggers (which only fire on new objects), whereas the question explicitly requires copying existing objects. Remember the memory tip: “List, query, loop, copy” — the four-step pattern for CLI-based batch operations on existing S3 objects.
DEA-C01 Data Ingestion and Transformation Practice Question
This DEA-C01 practice question tests your understanding of data ingestion and transformation. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Network Topology
The exhibit shows an AWS CLI command and its output. A data engineer wants to copy only objects larger than 10 MB from the S3 bucket to another bucket for processing. Which approach should be used to automate this task?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use AWS CLI with a script to filter and copy objects
The command lists objects larger than 10 MB. To automate copying, a script using AWS CLI with the --query parameter can filter and copy. Using S3 Batch Operations allows performing actions on a list of objects. The correct approach is to use AWS CLI with a script that iterates over the filtered list and uses aws s3 cp. S3 replication is for continuous sync, not one-time copy. Lambda with S3 events triggers only on new objects, not existing ones. S3 Inventory provides metadata but not direct copy.
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 S3 replication rules to replicate objects above 10 MB
Why it's wrong here
S3 replication does not filter by size; it replicates all objects.
✓
Use AWS CLI with a script to filter and copy objects
Why this is correct
The CLI can filter by size and copy objects using a script.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use S3 Inventory to generate a list and then copy
Why it's wrong here
Inventory provides a CSV list but does not automate copying.
✗
Use AWS Lambda with S3 event notifications
Why it's wrong here
Event notifications trigger on new objects, not existing ones.
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 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: Use AWS CLI with a script to filter and copy objects — The command lists objects larger than 10 MB. To automate copying, a script using AWS CLI with the --query parameter can filter and copy. Using S3 Batch Operations allows performing actions on a list of objects. The correct approach is to use AWS CLI with a script that iterates over the filtered list and uses aws s3 cp. S3 replication is for continuous sync, not one-time copy. Lambda with S3 events triggers only on new objects, not existing ones. S3 Inventory provides metadata but not direct copy.
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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This DEA-C01 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 DEA-C01 exam.
Question Discussion
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