Online Access Free D-DS-OP-23 Practice Test

What is the primary use of sets in Python?

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

What is the primary advantage of using dictionaries in Python data pipelines?

• A.Dictionaries support mathematical operations
• B.Dictionaries maintain element order
• C.Dictionaries offer O(1) lookup time
• D.Dictionaries allow duplicate values

Which skill is crucial for a data engineer to effectively manage and optimize large-scale data processing systems?

• A.Cloud computing
• B.Graphic design
• C.Front-end development
• D.Data analysis

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

• A.Spark SQL
• B.Spark Cassandra
• C.Spark Streaming
• D.Spark Core
• E.Spark HBase

Which Python library formats data into dataframes?

• A.NLTK
• B.scikit-learn
• C.NumPy
• D.Pandas