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
What skill is essential for a data engineer to efficiently transform and clean raw data into usable formats?
- A . Data visualization
- B . Machine learning
- C . Data warehousing
- D . ETL (Extract, Transform, Load) processes
Which Sqoop validation type checks the row counts between the source and target databases, and tries to ensure that the counts match?
- A . ValidationThreshold
- B . Eval
- C . ValidationFailureHandler
- D . Validator
Which of the following are components of the ETL process? (Select all that apply)
- A . Extraction
- B . Transmission
- C . Loading
- D . Transformation
Visualization
Which skill is crucial for a data engineer to effectively manage and optimize large-scale data processing systems?
- A . Data analysis
- B . Front-end development
- C . Cloud computing
- D . Graphic design
Understand the current and future states of data governance and identify remaining gaps
In a data analytics project, what is the primary responsibility of a data engineer?
- A . Creating data visualizations
- B . Designing machine learning models
- C . Building data pipelines and ETL processes
- D . Conducting statistical analysis
Which of the following are characteristics of the Hadoop ecosystem? (Select all that apply)
- A . Real-time processing
- B . Batch processing
- C . Low fault tolerance
- D . Scalability
- E . Single-node architecture
In a relational database, what is a minimal set of attributes to uniquely identify a record in a table?
- A . Super key
- B . Foreign key
- C . Primary key
- D . Candidate key
Which IoT data processing tool enables businesses to make real-time decisions to capitalize on the Analytics of Things (AoT)?
- A . Pravega
- B . Apache NiFi
- C . Nautilus
- D . Apache Kafka
What is the data governance role that leverages the data for business purposes, such as increasing sales or reducing manufacturing costs?
- A . Data steward
- B . Data custodian
- C . Security specialist
- D . End user