In big data analytics, what does the term "data transformation" involve?
A. Reducing data volume
B. Shuffling data across nodes
C. Preparing data for analysis
D. Encrypting data
Answer: Option C
A. Reducing data volume
B. Shuffling data across nodes
C. Preparing data for analysis
D. Encrypting data
Answer: Option C
What is the primary characteristic of "big data"?
A. Small volume of data
B. High velocity of data
C. Variety of data sources
D. Low complexity of data
In the context of big data, what does the "3Vs" represent?
A. Velocity, Value, Variability
B. Volume, Variety, Velocity
C. Volume, Value, Variety
D. Velocity, Veracity, Variety
A. Java
B. Python
C. Hadoop
D. SQL
What is the main purpose of the Hadoop Distributed File System (HDFS) in a Hadoop ecosystem?
A. Real-time data processing
B. Data storage and retrieval
C. Data visualization
D. Data encryption
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