Differentiate between a data engineer and data scientist.

Describe the distributed Hadoop file system.

How do you turn off the HDFS Data Node’s Block Scanner?

List the standard port numbers on which Hadoop’s task tracker, NameNode, and job tracker operate.

Describe NameNode.

How does schema evolution work?

What is big data?

Describe the fundamental idea underlying the Apache Hadoop Framework.

Describe streaming in Hadoop.

What role does Apache Hadoop’s distributed cache play?