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EMC D-DS-OP-23 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Data Governance and Operations | - Lifecycle management of data solutions - Security and compliance considerations - Data quality management |
| Topic 2: Machine Learning and Modeling | - Algorithm selection and tuning - Supervised and unsupervised learning - Model evaluation and validation |
| Topic 3: Data Science Foundations | - Statistical analysis and probability concepts - Feature engineering fundamentals - Data exploration and preprocessing |
| Topic 4: Optimization and Performance | - Optimization techniques for data workflows - Model performance tuning |
| Topic 5: Data Engineering Principles | - ETL/ELT processes - Data storage architectures (data lakes, warehouses) - Data pipeline design and orchestration |
EMC Dell Data Scientist and Data Engineering Optimize 2023 Sample Questions:
Which of the following are security considerations when using cloud services with Hadoop? (Select all that apply)
- A. Multi-factor authentication
- B. Storing all data on public GitHub repositories
- C. Data encryption in transit and at rest
- D. Regularly updating software and patches
Correct Answer: A,C,D 🗳️
An organization has implemented an IoT solution in their environment to gain competitive advantage.
This solution generates huge volumes of streaming data from different sources.
The organization wants to leverage this data to provide predictive, actionable results. They need a real- time data processing tool that can process the data using a fault-tolerant, horizontally scalable method.
Which tool should the organization use?
- A. Apache Ranger
- B. Apache Storm
- C. Apache Ambari
- D. Apache Oozie
Correct Answer: B 🗳️
What type of expertise is required to be an effective data engineer?
- A. Project management
- B. Accounting
- C. Big Data tools
- D. Business analysis
Correct Answer: C 🗳️
What is a data pipeline best practice related to Extract-Transform-Load (ETL) jobs?
- A. A failed ETL job should always be marked as completed so that any other scheduled jobs can execute.
- B. ETL jobs should be manually executed and monitored to ensure the highest quality.
- C. A failed ETL job should be re-run immediately without taking any corrective actions.
- D. ETL jobs should be flexible to source data changes such as new variables or attributes.
Correct Answer: D 🗳️
Which of the following data structures in Python is immutable?
- A. List
- B. Tuple
- C. Dictionary
- D. Set
Correct Answer: B 🗳️
Geraldine 
Jonathan 
Perry 
Michaelia 
Christian 
Len 
Marico 
Bevis 
Stanford 
Antonia 
Belle 
Kelly 
Gavin 
