BDA_Unit 1

What is Big Data?

• Small-sized structured data

• Traditional data stored in Excel

• Large volume of structured, semi-structured, and unstructured data

• Data that fits into a single spreadsheet

The 3 Vs of Big Data are:

• Volume, Value, Variety

• Volume, Velocity, Variety

• Velocity, Validity, Value

• Volume, Versatility, Visuals

Which of the following best defines the term "taxonomy" in Big Data?

• Classification of data types

• Format for displaying results

• A command for HDFS

• Java interface for Hadoop

Why is Big Data valuable to enterprises?

• It allows better gaming experience

• It enables efficient TV programming

• It provides insights for better decision making

• It is cheaper to store

Which of the following is a core component of Hadoop ecosystem?

• MySQL

• MongoDB

• HDFS

• Oracle

What is HDFS?

• Hadoop Disk File System

• Hadoop Distributed File System

• Huge Data File System

• Hadoop Directory File System

Which feature is NOT associated with Big Data?

• Real-time processing

• Structured storage only

• High velocity

• Large volume

What is the default block size in HDFS (Hadoop 2.x)?

• 64 MB

• 128 MB

• 256 MB

• 512 MB

Which component of Hadoop is responsible for processing data?

• HDFS

• Hive

• MapReduce

• Sqoop

Hadoop is written in which programming language?

• C

• Python

• Java

• JavaScript