Question 34 of 1,786
Data Ingestion and TransformationeasyMultiple SelectObjective-mapped

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.

Which TWO AWS services can be used to transform data in an Amazon S3 data lake before loading into Amazon Redshift? (Choose 2.)

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

AWS Glue

AWS Glue (Option D) is correct because it provides a fully managed ETL service that can crawl, catalog, and transform data in Amazon S3 data lakes. With AWS Glue, you can create ETL jobs using a serverless Spark environment to transform raw data into optimized formats (e.g., Parquet) and load it into Amazon Redshift via JDBC connections, making it ideal for preparing data before ingestion.

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.

  • AWS Lambda

    Why it's wrong here

    Lambda is suitable for lightweight transformations, not for large-scale ETL.

  • Amazon Athena

    Why it's wrong here

    Athena queries S3 but does not load data into Redshift.

  • Amazon EMR

    Why it's wrong here

    EMR can transform data but requires cluster management.

  • AWS Glue

    Why this is correct

    Glue can transform data in S3 and load into Redshift.

    Related concept

    Read the scenario before looking for a memorised answer.

  • Amazon Redshift Spectrum

    Why this is correct

    Spectrum can query S3 and insert results into Redshift tables.

    Related concept

    Read the scenario before looking for a memorised answer.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates confuse Amazon Athena's querying capability with ETL functionality, or assume AWS Lambda can handle large-scale data transformations, when in fact AWS Glue is the correct managed ETL service for transforming data in S3 before loading into Redshift.

Detailed technical explanation

How to think about this question

AWS Glue uses an Apache Spark-based backend to execute ETL jobs, automatically handling partitioning, compression (e.g., Snappy), and format conversion (e.g., CSV to Parquet) to optimize query performance in Redshift. Under the hood, Glue's DynamicFrame abstraction allows schema evolution and complex transformations without manual Spark code, and it integrates with the AWS Glue Data Catalog to maintain metadata for both S3 and Redshift tables. In real-world scenarios, Glue is often used to clean and denormalize streaming data from Kinesis or Kafka before loading into Redshift for analytics.

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.

TExam Day Tips

  • 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.

Quick reference

AWS S3 Storage Class Comparison

Storage ClassMin DurationRetrievalUse Case
S3 StandardNoneImmediateFrequently accessed data
S3 Standard-IA30 daysImmediateInfrequent access, rapid retrieval
S3 One Zone-IA30 daysImmediateNon-critical infrequent data
S3 Intelligent-TieringNoneImmediate–hoursUnknown or changing access patterns
S3 Glacier Instant90 daysMillisecondsArchive with instant retrieval
S3 Glacier Flexible90 daysMinutes–hoursArchive, flexible retrieval
S3 Glacier Deep Archive180 daysHoursLong-term compliance archive

What to study next

Got this wrong? Here's your next step.

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FAQ

Questions learners often ask

What does this DEA-C01 question test?

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: AWS Glue — AWS Glue (Option D) is correct because it provides a fully managed ETL service that can crawl, catalog, and transform data in Amazon S3 data lakes. With AWS Glue, you can create ETL jobs using a serverless Spark environment to transform raw data into optimized formats (e.g., Parquet) and load it into Amazon Redshift via JDBC connections, making it ideal for preparing data before ingestion.

What should I do if I get this DEA-C01 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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Last reviewed: Jul 4, 2026

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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.