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

1. In the ELT process, data is transformed after being loaded into the target system.
Which tools can be used for ELT? (Select all that apply)

A) Apache Hadoop
B) Apache Spark
C) Microsoft SSIS
D) Talend
E) Amazon Redshift

2. What are three programming languages supported by Apache Spark?

A) Python, C, and Scala
B) Python, R, and Scala
C) Python, R, and C++
D) PL/SQL, R, and Scala

3. Which Sqoop validation type checks the row counts between the source and target databases, and tries to ensure that the counts match?

A) ValidationFailureHandler
B) Eval
C) Validator
D) ValidationThreshold

4. What is the primary storage system used by the Hadoop ecosystem?

A) Cassandra
B) MongoDB
C) HDFS
D) Amazon S3

5. What is the fastest data transfer channel for the Flume Agent Architecture?

A) File
B) JDBC
C) Memory
D) Sink Processor

Solutions: