EMC D-DS-OP-23

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

1. What step in a query plan determines the best execution path for the provided query?

A) Optimizer
B) Execution
C) Parser
D) Algebrizer

2. Which of the following data structures in Python is immutable?

A) Tuple
B) Dictionary
C) Set
D) List

3. Match each Apache Kafka component with its description.

4. In a relational database, what is a minimal set of attributes to uniquely identify a record in a table?

A) Candidate key
B) Primary key
C) Super key
D) Foreign key

5. With Apache Kafka, what is an advantage of implementing the Publish/Subscribe messaging system over Point-to-Point messaging system?

A) Messages stored are deduplicated automatically to increase the overall storage capacity of a 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 received only by a few subscribers to that topic
D) Any message published to a topic is immediately received by all the subscribers to that topic

Solutions: