In big data analytics, what is the term for the process of transforming and preparing raw data for analysis, often involving cleaning and structuring the data?

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

Which programming framework is commonly used for processing large-scale data in a distributed computing environment?

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