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Databricks Certified-Data-Engineer-Professional exam : Databricks Certified Data Engineer Professional

Certified-Data-Engineer-Professional Exam Questions
  • Exam Code: Certified-Data-Engineer-Professional
  • Exam Name: Databricks Certified Data Engineer Professional
  • Updated: Aug 27, 2026
  • Q & A: 250 Questions and Answers
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Databricks Certified-Data-Engineer-Professional exam demo

Databricks Certified-Data-Engineer-Professional Exam Syllabus Topics:

SectionObjectives
Topic 1: Data Sharing and Federation- Share and federate data
  • 1. Configure Lakehouse Federation with appropriate governance across supported source systems
    • 2. Demonstrate secure Delta Sharing between Databricks deployments using Databricks-to-Databricks sharing or with external platforms using the open sharing protocol
      • 3. Use Delta Sharing to share live data from the Lakehouse with any computing platform
        Topic 2: Data Ingestion & Acquisition- Design and implement data ingestion pipelines
        • 1. Create an append-only data pipeline capable of handling both batch and streaming data using Delta
          • 2. Ingest formats including Delta Lake, Parquet, ORC, AVRO, JSON, CSV, XML, text, and binary data from sources such as message buses and cloud storage
            Topic 3: Developing Code for Data Processing using Python and SQL- Using Python and Tools for Development
            • 1. Design and implement a scalable Python project structure optimized for Databricks Asset Bundles, enabling modular development, deployment automation, and CI/CD integration
              • 2. Manage and troubleshoot external third-party library installations and dependencies, including PyPI packages, local wheels, and source archives
                • 3. Develop User-Defined Functions using Pandas/Python UDF
                  - Building and Testing an ETL Pipeline with Lakeflow Declarative Pipelines, SQL, and Apache Spark
                  • 1. Choose appropriate configurations for environments, dependencies, high-memory notebook tasks, and retry behavior
                    • 2. Build and manage reliable, production-ready batch and streaming data pipelines using Lakeflow Declarative Pipelines and Auto Loader
                      • 3. Create and automate ETL workloads using Jobs through the UI, APIs, or CLI
                        • 4. Use APPLY CHANGES APIs to simplify CDC in Lakeflow Declarative Pipelines
                          • 5. Develop unit and integration tests using assertDataFrameEqual, assertSchemaEqual, DataFrame.transform, testing frameworks, and debugging tools
                            • 6. Compare Spark Structured Streaming and Lakeflow Declarative Pipelines to determine the optimal approach for scalable ETL pipelines
                              • 7. Create pipeline components using control flow operators such as if/else and foreach
                                • 8. Explain the advantages and disadvantages of streaming tables compared to materialized views
                                  Topic 4: Debugging and Deploying- Deploying CI/CD
                                  • 1. Build and deploy Databricks resources using Databricks Asset Bundles
                                    • 2. Configure and integrate Git-based CI/CD workflows using Databricks Git folders for notebook and code deployment
                                      - Debugging and Troubleshooting
                                      • 1. Use Lakeflow Declarative Pipelines event logs and Spark UI to debug Lakeflow Declarative Pipelines and Spark pipelines
                                        • 2. Identify diagnostic information using Spark UI, cluster logs, system tables, and query profiles to troubleshoot errors
                                          • 3. Analyze errors and remediate failed job runs using job repairs and parameter overrides
                                            Topic 5: Data Transformation, Cleansing, and Quality- Transform and validate data
                                            • 1. Write efficient Spark SQL and PySpark code for advanced transformations including window functions, joins, and aggregations
                                              • 2. Develop a quarantining process for bad data with Lakeflow Declarative Pipelines or Auto Loader in classic jobs
                                                Topic 6: Data Modeling- Design and optimize data models
                                                • 1. Identify the benefits of liquid clustering over partitioning and Z-Ordering
                                                  • 2. Design and implement scalable data models using Delta Lake to manage large datasets
                                                    • 3. Simplify data layout decisions and optimize query performance using liquid clustering
                                                      • 4. Design dimensional models for analytical workloads with efficient querying and aggregation
                                                        Topic 7: Monitoring and Alerting- Monitoring
                                                        • 1. Use Lakeflow Declarative Pipelines event logs to monitor pipelines
                                                          • 2. Use Query Profile and Spark UI to monitor workloads
                                                            • 3. Use system tables for observability of resource utilization, cost, auditing, and workloads
                                                              • 4. Use Databricks REST APIs and Databricks CLI to monitor jobs and pipelines
                                                                - Alerting
                                                                • 1. Use SQL Alerts to monitor data quality
                                                                  • 2. Use the Workflows UI and Jobs API to configure notifications for job status and performance issues
                                                                    Topic 8: Ensuring Data Security and Compliance- Ensuring Compliance
                                                                    • 1. Develop data purging solutions that comply with data retention policies
                                                                      • 2. Implement compliant batch and streaming pipelines that detect and mask PII
                                                                        - Applying Data Security Mechanisms
                                                                        • 1. Use row filters and column masks to protect sensitive table data
                                                                          • 2. Apply anonymization and pseudonymization methods including hashing, tokenization, suppression, and generalization
                                                                            • 3. Use ACLs to secure workspace objects and enforce the principle of least privilege
                                                                              Topic 9: Data Governance- Govern enterprise data
                                                                              • 1. Demonstrate understanding of the Unity Catalog permission inheritance model
                                                                                • 2. Create and add descriptions and metadata to enterprise data to improve discoverability
                                                                                  Topic 10: Cost & Performance Optimization- Optimize cost and performance
                                                                                  • 1. Apply Change Data Feed to address streaming table limitations and improve latency
                                                                                    • 2. Understand how and why Unity Catalog managed tables reduce operational overhead and maintenance burden
                                                                                      • 3. Understand Databricks query optimization techniques for large datasets, including data skipping and file pruning
                                                                                        • 4. Understand Delta optimization techniques such as deletion vectors and liquid clustering
                                                                                          • 5. Use query profiling to identify bottlenecks such as inefficient joins and data shuffling

                                                                                            Databricks Certified Data Engineer Professional Sample Questions:

                                                                                            1. A data engineer has created a new cluster using shared access mode with default configurations.
                                                                                            The data engineer needs to allow the development team access to view the driver logs if needed.
                                                                                            What are the minimal cluster permissions that allow the development team to accomplish this?

                                                                                            A) CAN MANAGE
                                                                                            B) CAN VIEW
                                                                                            C) CAN RESTART
                                                                                            D) CAN ATTACH TO


                                                                                            2. A large company seeks to implement a near real-time solution involving hundreds of pipelines with parallel updates of many tables with extremely high volume and high velocity data.
                                                                                            Which of the following solutions would you implement to achieve this requirement?

                                                                                            A) Isolate Delta Lake tables in their own storage containers to avoid API limits imposed by cloud vendors.
                                                                                            B) Configure Databricks to save all data to attached SSD volumes instead of object storage, increasing file I/O significantly.
                                                                                            C) Use Databricks High Concurrency clusters, which leverage optimized cloud storage connections to maximize data throughput.
                                                                                            D) Partition ingestion tables by a small time duration to allow for many data files to be written in parallel.
                                                                                            E) Store all tables in a single database to ensure that the Databricks Catalyst Metastore can load balance overall throughput.


                                                                                            3. A data engineering team has a time-consuming data ingestion job with three data sources. Each notebook takes about one hour to load new data. One day, the job fails because a notebook update introduced a new required configuration parameter. The team must quickly fix the issue and load the latest data from the failing source. Which action should the team take?

                                                                                            A) Share the analysis with the failing notebook owner so that they can fix it quickly.
                                                                                            B) Repair the run with the new parameter.
                                                                                            C) Update the task by adding the missing task parameter, and manually run the job.
                                                                                            D) Repair the run with the new parameter, and update the task by adding the missing task parameter.


                                                                                            4. A data engineer is optimizing a MERGE operation on an 800GB UC-managed table that experiences frequent updates and deletions. Which two actions should the engineer prioritize to improve MERGE performance? (Choose two.)

                                                                                            A) Overwrite the table instead of Merge.
                                                                                            B) Enable deletion vectors on the table if not already enabled.
                                                                                            C) Use ZORDER on high-cardinality columns.
                                                                                            D) Apply liquid clustering using the merge join keys.
                                                                                            E) Partition the table by date.


                                                                                            5. A company wants to implement Lakehouse Federation across multiple data sources but is concerned about data consistency and ensuring that all teams access the same authoritative version of their data. Which statement is applicable for Lakehouse Federations to maintain data consistency?

                                                                                            A) Federation implements change data capture (CDC) from all sources.
                                                                                            B) Federation creates local copies that must be manually refreshed.
                                                                                            C) A separate data synchronization service must be deployed.
                                                                                            D) Federation provides read-only access that reflects the current state of source systems.


                                                                                            Solutions:

                                                                                            Question # 1
                                                                                            Answer: B
                                                                                            Question # 2
                                                                                            Answer: C
                                                                                            Question # 3
                                                                                            Answer: D
                                                                                            Question # 4
                                                                                            Answer: B,D
                                                                                            Question # 5
                                                                                            Answer: D

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