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

1. In Python, which type of non-linear list always has a common root?

A) Graphs
B) Trees
C) Stacks
D) Queues

2. Which of the following best describes the purpose of database normalization in a relational database schema?

A) Improving query performance
B) Increasing data security
C) Enforcing referential integrity
D) Reducing data redundancy

3. Match each Apache Storm component with its description.

4. An organization plans to establish a data governance process for a data lake.
What is the correct sequence of steps required to implement the process?

A) 1. Define the roles and responsibilities of actors within the data governance process
2. Operationalize the data governance process and assist the deployment team
3. Understand the current and future states of data governance and identify remaining gaps
4. Develop the business value statement and a baseline for ongoing measurement of the data governance deployment
B) 1. Define the roles and responsibilities of actors within the data governance process
2. Develop the business value statement and a baseline for ongoing measurement of the data governance deployment
3. Operationalize the data governance process and assist the deployment team
4. Understand the current and future states of data governance and identify remaining gaps
C) 1. Develop the business value statement and a baseline for ongoing measurement of the data governance deployment
2. Define the roles and responsibilities of actors within the data governance process
3. Operationalize the data governance process and assist the deployment team
4. Understand the current and future states of data governance and identify remaining gaps
D) 1. Define the roles and responsibilities of actors within the data governance process
2. Operationalize the data governance process and assist the deployment team
3. Develop the business value statement and a baseline for ongoing measurement of the data governance deployment
4. Understand the current and future states of data governance and identify remaining gaps

5. Which characteristic of a relational database ensures that each row in a table is uniquely identifiable?

A) Foreign key
B) Indexing
C) Primary key
D) Joins

Solutions: