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 company needs to ingest data from multiple on-premises databases into Amazon S3 for analytics. The databases include Oracle, MySQL, and PostgreSQL. The data must be continuously replicated with minimal latency. Which AWS service should be used?
AWS Database Migration Service (AWS DMS)
DMS can continuously replicate from multiple source databases to S3.
Amazon Kinesis Data Streams
Why wrong: Kinesis is for real-time data streams, not direct database replication.
AWS Snowball
Why wrong: Snowball is for large physical data transfers, not continuous replication.
AWS Glue
Why wrong: Glue is for batch ETL, not continuous replication.
Answer choices
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 (AWS DMS)
Option B is correct because AWS DMS supports heterogeneous database migrations and continuous replication to S3. Option A is wrong because Glue is batch-oriented. Option C is wrong because Kinesis Data Streams is for streaming data, not database replication. Option D is wrong because Snowball is for large offline transfers.
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
For each option: why learners choose it and why it is or isn't the right answer here.
AWS Database Migration Service (AWS DMS)
Why this is correct
DMS can continuously replicate from multiple source databases to S3.
Related concept
Standard ACLs match source addresses.
Amazon Kinesis Data Streams
Why it's wrong here
Kinesis is for real-time data streams, not direct database replication.
AWS Snowball
Why it's wrong here
Snowball is for large physical data transfers, not continuous replication.
AWS Glue
Why it's wrong here
Glue is for batch ETL, not continuous replication.
Common exam traps
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
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.
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
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
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.
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FAQ
Data Ingestion and Transformation — This question tests Data Ingestion and Transformation — Standard ACLs match source addresses..
The correct answer is: AWS Database Migration Service (AWS DMS) — Option B is correct because AWS DMS supports heterogeneous database migrations and continuous replication to S3. Option A is wrong because Glue is batch-oriented. Option C is wrong because Kinesis Data Streams is for streaming data, not database replication. Option D is wrong because Snowball is for large offline transfers.
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.
Standard ACLs match source addresses.
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Last reviewed: Jun 20, 2026
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.
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