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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) Execution
B) Optimizer
C) Algebrizer
D) Parser

2. Which of the following are components of the Apache Spark architecture? (Select all that apply)

A) Spark Cassandra
B) Spark HBase
C) Spark Core
D) Spark SQL
E) Spark Streaming

3. What are two Spark libraries?

A) Spark NoSQL and GraphX
B) Spark SQL and RDD
C) Spark NoSQL and RDD
D) Spark SQL and GraphX

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

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

5. What enables Pravega to rapidly ingest streaming data into durable storage?

A) Relational database schema
B) MongoDB
C) Apache Spark
D) Append-only logs

Solutions: