Free EMC D-DS-OP-23 Exam Dumps Questions & Answers

What is the primary use of sets in Python?

• A.Storing unique elements
• B.Storing ordered sequences
• C.Storing hierarchical data
• D.Storing key-value pairs

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

• A.Indexing
• B.Foreign key
• C.Joins
• D.Primary key

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

• A.Worker node
• B.Driver node
• C.Discretized streams (DStreams)
• D.Kafka topics
• E.HDFS storage

What is a challenge of managing data pipelines?

• A.Monitoring is simply accomplished by the end users reporting any data quality issues
• B.Making the data volume consistent, or at least easily predictable
• C.Guaranteeing there is no personally identifiable information in the extracted data
• D.Ensuring that proper backups are available in the event of a data corruption

Which of the following data structures in Python is immutable?

• A.Tuple
• B.Set
• C.List
• D.Dictionary