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Databricks Databricks-Certified-Professional-Data-Engineer Exam Dumps - Actual Questions Answers


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Databricks-Certified-Professional-Data-Engineer Questions and Answers

Question # 1

A Delta Lake table with Change Data Feed (CDF) enabled in the Lakehouse named customer_churn_params is used in churn prediction by the machine learning team. The table contains information about customers derived from a number of upstream sources. Currently, the data engineering team populates this table nightly by overwriting the table with the current valid values derived from upstream data sources. The churn prediction model used by the ML team is fairly stable in production. The team is only interested in making predictions on records that have changed in the past 24 hours. Which approach would simplify the identification of these changed records?

A.

Apply the churn model to all rows in the customer_churn_params table, but implement logic to perform an upsert into the predictions table that ignores rows where predictions have not changed.

B.

Modify the overwrite logic to include a field populated by calling current_timestamp() as data are being written; use this field to identify records written on a particular date.

C.

Replace the current overwrite logic with a MERGE statement to modify only those records that have changed; write logic to make predictions on the changed records identified by the Change Data Feed.

D.

Convert the batch job to a Structured Streaming job using the complete output mode; configure a Structured Streaming job to read from the customer_churn_params table and incrementally predict against the churn model.

Question # 2

A query is taking too long to run. After investigating the Spark UI, the data engineer discovered a significant amount of disk spill . The compute instance being used has a core-to-memory ratio of 1:2.

What are the two steps the data engineer should take to minimize spillage? (Choose 2 answers)

A.

Choose a compute instance with a higher core-to-memory ratio.

B.

Choose a compute instance with more disk space.

C.

Increase spark.sql.files.maxPartitionBytes.

D.

Reduce spark.sql.files.maxPartitionBytes.

E.

Choose a compute instance with more network bandwidth.

Question # 3

While reviewing a query ' s execution in the Databricks Query Profiler, a data engineer observes that the Top Operators panel shows a Sort operator with high Time Spent and Memory Peak metrics. The Spark UI also reports frequent data spilling .

How should the data engineer address this issue?

A.

Switch to a broadcast join to reduce memory usage.

B.

Repartition the DataFrame to a single partition before sorting.

C.

Convert the sort operation to a filter operation.

D.

Increase the number of shuffle partitions to better distribute data.

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Databricks Databricks-Certified-Professional-Data-Engineer Exam Dumps FAQs

1. What is the Databricks Certified Professional Data Engineer Certification Exam?

The Databricks Certified Professional Data Engineer exam assesses your ability to perform advanced data engineering tasks using Databricks and its associated tools. Passing validates your expertise in building and managing pipelines, transforming data, and deploying production-ready workloads on the Databricks Lakehouse Platform.

2. What is the format of the Databricks Certified Data Engineer Professional Certification Exam?

The Databricks Certified Data Engineer Professional certification exam is a proctored certification exam that consists of 60 multiple-choice questions. The exam is delivered online and has a time limit of 120 minutes.

3. What topics are covered in the Databricks Certified Data Engineer Professional Certification Exam?

The exam focuses on four key areas: Databricks Tooling, Data Processing, Data Modeling, and Production Optimization. You can find a detailed exam guide on the Databricks website for specific topics and percentages.

4. What resources are available to prepare for the Databricks Certified Data Engineer Professional Certification Exam?

DumpsMate provide study guides, PDF question sets, and explanations developed by data engineering experts.

5. Does DumpsMate guarantee success in the Databricks Certification?

Our comprehensive study materials and Databricks Certification Practice Questions significantly enhance your preparation; success ultimately depends on your dedication and understanding of the concepts. We aim to equip you with the knowledge and tools to confidently approach the exam.

6. What are the benefits of passing the Databricks Certified Data Engineer Professional Certification Exam?

Earning the Databricks Certified Professional Data Engineer credential validates your expertise, sets you apart in the job market, and opens doors to exciting career opportunities in data engineering.

7. What is the validity period of the Databricks Certified Data Engineer Professional Certification Exam?

The Databricks Certified Data Engineer Professional certification is valid for two years from the issue date.

8. What is the language of the Databricks Certified Data Engineer Professional Certification Exam?

The language of the Databricks Certified Data Engineer Professional certification exam is English

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