Match each AWS Glue component to its role.
Drag a concept onto its matching description — or click a concept then click the description.
Scans data sources and populates catalog
Central metadata repository
Transform and load data
Orchestrates multiple jobs and crawlers
Interactive development environment
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Data Catalog: Central metadata repository for storing table definitions and schema.
AWS Glue components work together for ETL. The Data Catalog stores metadata, Crawlers populate the catalog, Classifiers infer schema, and ETL Jobs execute transformations. Connections provide connectivity but are not listed here.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Data Catalog: Central metadata repository for storing table definitions and schema.
Why this is correct
The Data Catalog is a central metadata store that holds table definitions, schemas, and locations for Glue ETL jobs.
Crawler: Connects to data stores, determines schema, and populates the Data Catalog.
Why this is correct
A Glue Crawler scans data sources, infers schema, and automatically updates the Data Catalog with table metadata.
ETL Job: Executes Apache Spark or Python scripts to transform data.
Why this is correct
Glue ETL jobs run user-defined scripts (in Spark or Python) to perform data transformation and loading.
Classifier: Determines the format and schema of data from its structure (e.g., JSON, CSV).
Why this is correct
Classifiers are used by Crawlers to identify data format and infer schema, such as JSON, CSV, or Parquet.
Data Catalog: Executes transformation scripts.
Why it's wrong here
Incorrect — this describes a Glue ETL Job, not the Data Catalog. The Data Catalog is a metadata store, not a compute engine.
Crawler: Stores configuration for connecting to data stores.
Why it's wrong here
Incorrect — this describes a Glue Connection, which holds connection parameters, not a Crawler. Crawlers scan data and infer schema.
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About these practice questions
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.