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
Question #91
What is a challenge of managing data pipelines?
- A . Ensuring that proper backups are available in the event of a data corruption
- B . Making the data volume consistent, or at least easily predictable
- C . Guaranteeing there is no personally identifiable information in the extracted data
- D . Monitoring is simply accomplished by the end users reporting any data quality issues
Correct Answer: A
Question #92
What type of expertise is required to be an effective data engineer?
- A . Big Data tools
- B . Business analysis
- C . Project management
- D . Accounting
Correct Answer: A
Question #93
Which of the following are components of the Apache Spark Streaming architecture? (Select all that apply)
- A . Driver node
- B . Worker node
- C . Discretized streams (DStreams)
- D . Kafka topics
- E . HDFS storage
Correct Answer: ABC
Question #94
You are designing a database for an e-commerce data warehouse. The data is normalized in 1NF format and will be used to create data marts for different departments inside the organization.
Which schema type should be used for this requirement?
- A . Star
- B . Columnar
- C . Highly Normalized
- D . Graph
Correct Answer: A
Question #95
Question #96
What is a characteristic of the Kerberos role in a Hadoop ecosystem?
- A . Bind-based authentication
- B . Secure user identification over insecure network
- C . Designed to access directory services
- D . Used for authentication and authorization
Correct Answer: B
Question #97
Question #97
Question #99
Which layer in the EdgeX Foundry architecture provides a REST API that enables clients to establish new requests?
- A . Device Services
- B . Application/Export Services
- C . Core Services
- D . Support Services
Correct Answer: B
Question #100
What is the fastest data transfer channel for the Flume Agent Architecture?
- A . Memory
- B . JDBC
- C . File
- D . Sink Processor
Correct Answer: A