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EMC Dell Data Scientist and Data Engineering Optimize 2023 Sample Questions:

1. Which NoSQL database type is most suitable for applications requiring high-speed, low-latency data retrieval based on simple lookups?

A) Time-series database
B) Key-value store
C) Document store
D) Column-family store

2. In Python, which primitive data type covers real rational and irrational numbers?

A) String
B) Integer
C) Boolean
D) Float

3. What is a significant advantage of using a columnar store NoSQL database for analytical workloads?

A) Optimized query performance on large datasets
B) Efficient storage of hierarchical data
C) High-speed transaction processing
D) Real-time data synchronization

4. Which encoding standard is used by Python 2 to store strings?

A) ASCII
B) Binary
C) Unicode
D) Static

5. What is a difference between Data Governance and Master Data Management (MDM)?

A) Data governance is an informal system of decision making.
MDM is a formal system of decision making.
B) Data governance implementation involves people, policies, rules, and metrics.
MDM is done automatically with no interference.
C) Data Governance is a formalized system of decision making.
MDM is a comprehensive method to link all data elements to a common point of reference.
D) Data governance focuses mainly on IT practices.
MDM creates the rules and decisions for operational data processes.

Solutions: