Which of the following statements best describes Hadoop?

A major finance organisation has engaged your company to set up a large data mining application. Using AWS you decide the best service for this is Amazon Elastic Map Reduce (EMR) which you know uses Hadoop.

Which of the following statements best describes Hadoop?
A . Hadoop is 3rd Party software which can be installed using AMI
B . Hadoop is an open source python web framework
C . Hadoop is an open source Java software framework
D . Hadoop is an open source javascript framework

Answer: C

Explanation:

Amazon EMR uses Apache Hadoop as its distributed data processing engine.

Hadoop is an open source, Java software framework that supports data-intensive distributed applications running on large clusters of commodity hardware. Hadoop implements a programming model named “MapReduce,” where the data is divided into many small fragments of work, each of which may be executed on any node in the cluster.

This framework has been widely used by developers, enterprises and startups and has proven to be a reliable software platform for processing up to petabytes of data on clusters of thousands of commodity machines.

Reference: http://aws.amazon.com/elasticmapreduce/faqs/