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.
A data engineer needs to ingest data from an on-premises Oracle database into Amazon S3 on a nightly basis. The data volume is approximately 10 GB per night. The database is accessible over the internet. Which AWS service is MOST appropriate for this task?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
AWS Database Migration Service (DMS) is designed for migrating databases to AWS and can continuously replicate changes. For nightly batch loads, DMS with a full load or CDC is ideal. Option A (AWS DataSync) is for file transfers, not databases. Option B (AWS Glue) can connect to JDBC sources but is more suitable for ETL; DMS is simpler for database migration. Option C (Amazon Kinesis) is for real-time streaming. Option D (AWS Transfer Family) is for file transfers over SFTP/FTPS.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
AWS Glue ETL job with a JDBC connection
Why it's wrong here
Glue can be used but requires more setup; DMS is more straightforward for database ingestion.
✗
AWS DataSync
Why it's wrong here
DataSync is for file storage transfers, not direct database connections.
✗
AWS Transfer Family
Why it's wrong here
Transfer Family is for file transfers over SFTP/FTPS, not database extraction.
✗
Amazon Kinesis Data Streams
Why it's wrong here
Kinesis is for real-time streaming, not nightly batch loads.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
Standard ACLs match source addresses.
Extended ACLs can match source, destination, protocol and ports.
The first matching ACL entry is used.
There is usually an implicit deny at the end.
TExam Day Tips
→Check inbound versus outbound direction.
→Read the ACL from top to bottom.
→Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related DEA-C01 ACL questions on filtering logic and placement.
Data Ingestion and Transformation — This question tests Data Ingestion and Transformation — Standard ACLs match source addresses..
What exam trap should I watch out for?
Common exam trap: ACLs stop at the first match: ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
What should I do if I get this DEA-C01 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related DEA-C01 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Question Discussion
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