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Cloudera CDP-3002 Exam Syllabus Topics:

Cloudera CDP Data Engineer - Certification Sample Questions:

1. Considering Hive's optimization mechanisms, under which scenario might partition pruning fail to improve query performance?

A) When querying data using a non-partition column as a filter
B) When the table is partitioned on a column frequently used in query filters
C) When the partitioned table contains a small number of partitions
D) When querying data using the exact partition key in the WHERE clause

2. Your Iceberg table experiences frequent schema evolution, with new columns being added regularly. Which of the following might you need to adjust to maintain optimal performance?

A) Spark shuffle partitions (spark.sql.shuffle.partitions)
B) Iceberg metadata table pruning frequency
C) Kubernetes resource requests for Spark executors
D) The Iceberg table's write format (vl or v2)

3. You want to schedule your Airflow DAG to run every hour, starting at midnight (00:00). How can you achieve this scheduling configuration?

A) Use the cron expression "@hourly".
B) Define a custom Python function to schedule the DAG at the desired time.
C) Set the schedule_interval parameter to "0 0 ".
D) Utilize Airflow triggers to initiate the DAG execution at midnight.

4. How does the Cloudera Data Engineering service integrate with cloud storage solutions like Amazon S3 or Azure Blob Storage?

A) Not directly supported, requires external tools.
B) Utilizes built-in connectors for seamless access.
C) Requires manual configuration for each storage bucket.
D) Requires custom scripting for each cloud storage provider.

5. Consider a PySpark application that calculates the count of rows in a CSV file. The main application file is 'count_rows.py', and it uses a custom library 'data_utils.py'. After packaging, which 'spark-submit' command correctly submits this job including the custom library?

A) 'spark-submit -py-files data utils.py count_rows.py'
B) 'spark-submit --files data_utils.py count_rows.py'
C) 'spark-submit --archives data_utils.py count_rows.py'
D) 'spark-submit --jars data utils.py count_rows.py'

Solutions: