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

1. Which tool provides fine-grained access control and security for Hadoop components?

A) Apache Ranger
B) Apache HBase
C) Apache Atlas
D) Apache Knox

2. Which Cassandra data type represents a collection of key-value pairs, and is represented in curly brackets ({, }) and colon (:)?

A) Set
B) UUID
C) List
D) Map

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

A) Data governance focuses mainly on IT practices.
MDM creates the rules and decisions for operational data processes.
B) Data governance implementation involves people, policies, rules, and metrics.
MDM is done automatically with no interference.
C) Data governance is an informal system of decision making.
MDM is a formal system of decision making.
D) 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.

4. Which feature of Apache Kafka makes it suitable for handling high-throughput data streams?

A) Partitioning and replication
B) Only supports batch processing
C) In-memory data storage
D) Static schema enforcement

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

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

Solutions: