1. Intro to Big Data

Question 1

Which of the following is NOT one of the 5 Vs of Big Data?
A) Velocity
B) Variety
C) Veracity
D) Virtualization

Answer 1

D) Virtualization

Question 2

What is the main challenge in dealing with Big Data?
A) Finding enough data
B) Storing and analyzing the data
C) Keeping the data secure
D) Making the data visually appealing

Answer 2

B) Storing and analyzing the data

Question 3

What is Hadoop primarily used for?
A) Web development
B) Distributed data storage and processing
C) Graphic design
D) Game development

Answer 3

B) Distributed data storage and processing

Question 4

Which scaling approach involves spreading data and processing across more machines?
A) Scale-up
B) Scale-down
C) Scale-out
D) Scale-in

Answer 4

C) Scale-out

Question 5

In Hadoop’s HDFS, what is the role of the NameNode?
A) It stores the actual data
B) It manages the file system namespace and regulates access to files
C) It performs checkpointing for the NameNode
D) It is a client that reads and writes data

Answer 5

B) It manages the file system namespace and regulates access to files

Question 6

Which of the following is a component of Hadoop’s architecture?
A) HBase
B) MapReduce
C) Cassandra
D) MongoDB

Answer 6

B) MapReduce

Question 7

What is the purpose of the SecondaryNameNode in HDFS?
A) It acts as a backup for the NameNode
B) It performs checkpointing for the NameNode
C) It stores the actual data
D) It manages the network traffic

Answer 7

B) It performs checkpointing for the NameNode

Question 8

Which of the following statements about HDFS is true?
A) HDFS is designed for small files
B) HDFS stores multiple copies of data blocks for fault tolerance
C) HDFS uses a peer-to-peer architecture
D) HDFS is primarily used for real-time data processing

Answer 8

B) HDFS stores multiple copies of data blocks for fault tolerance

Question 9

Which of the following is NOT a characteristic of Big Data?
A) Velocity
B) Veracity
C) Volatility
D) Volume

Answer 9

C) Volatility

Question 10

In Hadoop, the NameNode:
A) Stores actual data
B) Manages the file system namespace
C) Performs data processing
D) Acts as a data node

Answer 10

B) Manages the file system namespace

Question 11

In Hadoop, data is stored in:
A) The NameNode
B) The ResourceManager
C) HDFS
D) YARN

Answer 11

C) HDFS