DEA-C02 Data Movement Practice Question
A data engineer is configuring continuous ingestion of new event files from an external Amazon S3 stage into a Snowflake table. The files arrive frequently and the engineer wants Snowflake to load them automatically without building an external orchestrator. The stage already has a storage integration attached. Which Snowflake object should the engineer create to accomplish this?
⚠ Common exam trap
The trap here is assuming any scheduled COPY INTO satisfies 'automatic' loading, when event-driven auto-ingest is the specific mechanism for reacting to new files.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A pipe with AUTO_INGEST = TRUE
Continuous, event-driven loading from an external stage is implemented with a pipe configured for auto-ingest. The pipe wraps the COPY INTO statement, and the cloud provider's event notification tells Snowflake when new files appear, so no polling or external scheduler is needed. Streams, tasks, and materialized views solve different problems and cannot react to S3 object creation events.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
A stream on the external stage that captures new file names
Why it's wrong here
Streams track change data capture on Snowflake tables, not on external stage file listings. A stream cannot observe new objects landing in an S3 bucket, so it would never produce rows for newly arrived files. Using a stream here misapplies a table-level CDC feature to a file-arrival problem, which is the role of a pipe with auto-ingest instead.
- ✓
A pipe with AUTO_INGEST = TRUE
Why this is correct
A pipe with AUTO_INGEST = TRUE relies on the cloud provider's event notifications to trigger COPY INTO when new files land on the stage, so ingestion happens automatically with no external scheduler required. The storage integration supplies the credentials and the event notification ARN is tied to the pipe, which matches the requirement of loading frequent event files with minimal orchestration overhead on the Snowflake side.
- ✗
A materialized view defined over the external stage
Why it's wrong here
Materialized views are defined over Snowflake tables and are refreshed by Snowflake's background maintenance; they cannot be defined over an external stage and they do not ingest files. This option confuses query acceleration with data loading. Materialized views also have restrictions on the kinds of expressions allowed, and none of those restrictions are relevant because the fundamental object type is wrong for file ingestion.
- ✗
A task scheduled with a CRON expression that runs COPY INTO every minute
Why it's wrong here
Tasks can schedule COPY INTO statements, but polling every minute still introduces latency and cost, and it is not event-driven ingestion. The scenario asks for automatic loading as files arrive, and a task does not react to S3 event notifications. Tasks are a valid orchestration tool, but they do not satisfy the 'without building an external orchestrator and without polling' intent as cleanly as an auto-ingest pipe does.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
About these practice questions
This DEA-C02 question is part of Courseiva's 229-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Snowflake exam blueprint
This DEA-C02 practice question is part of Courseiva's free Snowflake 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-C02 exam.