Study plan
How to Pass the Apache Airflow Fundamentals Exam
A study plan for the Apache Airflow Fundamentals certification exam, built from the official domain weights instead of a generic template. Start by building at least 10 DAGs using different operators (Python, Bash, Postgres, Kubernetes). Focus on TaskFlow API and dynamic task mapping as these are heavily tested. Use Astronomer's official documentation and their hosted training modules. Practice deploying Airflow on Kubernetes (K8s) and configuring the Celery executor. Join the Airflow Slack community for real-world troubleshooting tips. Dedicating 30–40 hours over 2 weeks with hands-on labs is recommended.
- 5 domains
- 75 questions
- 60 min
- 70% to pass
certilumStudy in weight order, not topic order
The plan below follows the official blueprint weights, so the order of study is the order that returns the most points.
- 1
Airflow Core Concepts
25%- Understanding Airflow architecture: Scheduler, Executor, Web Server, Worker
- DAG definition and structure: tasks, dependencies, and DAG Runs
- Core concepts: Operators, Sensors, Task Instances, xComs, Variables
- Airflow configuration: airflow.cfg key parameters and environment variables
19 practice questions tagged to this domain.
- 2
DAG Authoring and Scheduling
25%- Writing DAGs in Python: context managers, default_args, and tags
- Task dependency types: linear, fan-out, fan-in, and conditional branching
- Scheduling concepts: cron expressions, timedelta, data-aware scheduling
- Using TaskFlow API for dependency injection and dynamic task mapping
- +1 more topics in the blueprint
19 practice questions tagged to this domain.
- 3
Operators, Hooks, and Connections
20%- Built-in operators: PythonOperator, BashOperator, PostgresOperator, KubernetesPodOperator
- Custom operators: creating, testing, and registering custom operators
- Hooks: connecting to external systems (Postgre, S3, GCS, HTTP)
- Managing connections and secrets: Airflow connections UI, environment variables, and Secret Backends
15 practice questions tagged to this domain.
- 4
Execution and Production Deployment
20%- Executor types: Local, Celery, Kubernetes, and their use cases
- Deploying Airflow on Astronomer: Docker images, CI/CD, and environment management
- Monitoring and logging: task logs, Airflow UI, metrics (Prometheus/Grafana)
- Scaling and performance tuning: parallelism, pool slots, and sensor intervals
15 practice questions tagged to this domain.
- 5
Security, Governance, and Best Practices
10%- Authentication and authorization: RBAC, LDAP, and OAuth
- Audit logging and DAG versioning
- Cost optimization: resource management and scheduled shutdowns
- DAG testing: unit tests, integration tests, and backfill testing
7 practice questions tagged to this domain.
Three phases, in order
Most failures are process failures, not knowledge failures.
Phase 1 — Learn the high-weight domains
Start where the points are. The first domains on this plan carry the most weight, so a gap there costs the most. Cover the objectives, then close each topic with practice questions you actually get wrong.
Phase 2 — Close the mid-weight domains
The middle of the blueprint is where most candidates plateau. These domains are worth less per topic than the first phase, but they add up fast, and they are the usual difference between a near miss and a clear pass.
Phase 3 — Timed full mocks
Stop reading new material at this point. Run full-length exams under the real time limit and the real format, and use the per-domain breakdown to find which domain is still costing you the pass.
Where we put the emphasis
For Apache Airflow Fundamentals, Certilum combines theoretical summaries with guided practice questions where you instrument DAGs with custom sensors and xComs. Our practice exams simulate the Astronomer environment, including scenario‑based drills on fixing broken DAGs and optimizing task concurrency.
The order matters less than the loop. Every domain you finish should end with questions you got wrong, because the mistake is the only thing you actually needed to study. On the Apache Airflow Fundamentals that loop is worth 25% of the exam in the first block alone.
More about the Apache Airflow Fundamentals exam
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