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EMC D-DS-OP-23 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Optimization and Performance | - Model performance tuning - Optimization techniques for data workflows |
| Topic 2: Machine Learning and Modeling | - Algorithm selection and tuning - Model evaluation and validation - Supervised and unsupervised learning |
| Topic 3: Data Engineering Principles | - Data pipeline design and orchestration - Data storage architectures (data lakes, warehouses) - ETL/ELT processes |
| Topic 4: Data Governance and Operations | - Security and compliance considerations - Lifecycle management of data solutions - Data quality management |
| Topic 5: Data Science Foundations | - Data exploration and preprocessing - Feature engineering fundamentals - Statistical analysis and probability concepts |
EMC Dell Data Scientist and Data Engineering Optimize 2023 Sample Questions:
1. In Python, which data type is one dimensional and immutable?
A) Tuple
B) Array
C) Set
D) List
2. You are designing a genomics analysis application and need to set up an Apache Oozie job to execute a single MapReduce workflow at 12:00 AM EST every day.
Which Oozie job type should you implement?
A) Coordinator
B) JobTracker
C) Bundle
D) Workflow
3. Which of the following are key roles in data governance? (Select all that apply)
A) Data Owner
B) Data Scientist
C) Data Analyst
D) Data Steward
E) Chief Information Officer (CIO)
4. Why is Python commonly used for building data pipelines?
A) It requires compilation for execution
B) It only supports batch processing
C) It has no libraries for data manipulation
D) Its readability and extensive libraries
5. With Apache Kafka, what is an advantage of implementing the Publish/Subscribe messaging system over Point-to-Point messaging system?
A) Any message published to a topic is received only by a few subscribers to that topic
B) Messages can be dynamically moved between topics to improve the overall throughput of the system
C) Any message published to a topic is immediately received by all the subscribers to that topic
D) Messages stored are deduplicated automatically to increase the overall storage capacity of a topic
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: A | Question # 3 Answer: A,D,E | Question # 4 Answer: D | Question # 5 Answer: C |




