DELL EMC D-DS-OP-23 Practice Exams
Last updated on Oct 22,2026- Exam Code: D-DS-OP-23
- Exam Name: Dell Data Engineering Optimize
- Certification Provider: DELL EMC
- Latest update: Oct 22,2026
Which of the following are data ingestion tools commonly used in the Hadoop ecosystem? (Select all that apply)
- A . Apache Flume
- B . Apache Kafka
- C . Apache Sqoop
- D . Apache Flink
- E . Apache Beam
Which of the following are data ingestion tools commonly used in the Hadoop ecosystem? (Select all that apply)
- A . Apache Flume
- B . Apache Kafka
- C . Apache Sqoop
- D . Apache Flink
- E . Apache Beam
What is the purpose of memory management in Apache Flink?
- A . Convert all of the data into Java objects
- B . Control how much memory the runtime operations use
- C . Eliminate the need for serialization of the data
- D . Ensure no disk space is ever required
In Python, which type of non-linear list always has a common root?
- A . Trees
- B . Graphs
- C . Queues
- D . Stacks
What enables Pravega to rapidly ingest streaming data into durable storage?
- A . Apache Spark
- B . Append-only logs
- C . Relational database schema
- D . MongoDB
Which component of the Apache Atlas framework allows metadata to be added to the Atlas environment?
- A . Apps
- B . Ingest/Export
- C . Metadata Sources
- D . Graph Engine
Which of the following accurately describes Apache Storm? (Select all that apply)
- A . A distributed stream processing system
- B . A batch processing framework
- C . A machine learning library
- D . A file storage system
What is a data pipeline best practice related to Extract-Transform-Load (ETL) jobs?
- A . ETL jobs should be flexible to source data changes such as new variables or attributes.
- B . A failed ETL job should always be marked as completed so that any other scheduled jobs can execute.
- C . ETL jobs should be manually executed and monitored to ensure the highest quality.
- D . A failed ETL job should be re-run immediately without taking any corrective actions.
Refer to the exhibit.
Which shows a table named Student.
What changes must be made to the table in order to achieve 1NF?
- A . Make Zip the primary key in the table
- B . Split table into two tables named Student and Zip
- C . Remove duplicate rows in the table
- D . Split table into two tables named Student and DoB
Which Python library provides the foundation for SciPy?
- A . NLTK
- B . NumPy
- C . Pandas
- D . scikit-learn