Your company is planning on hosting a set of EMR clusters for the purposes of Machine Learning and ad-hoc query analysis. All the data would be stored on Amazon S3. The underlying instance types needs to be setup for the clusters. Which of the following would you recommend?

Answer options:

A.For the Machine Learning cluster – T and for adhoc query analysis – R
B.For the Machine Learning cluster – T and for adhoc query analysis – G2
C.For the Machine Learning cluster – M and for adhoc query analysis – I
D.For the Machine Learning cluster – C and for adhoc query analysis – R

Answer - D
The C type Instances are good for Machine Learning purposes
High performance web servers, scientific modelling, batch processing, distributed analytics, high-performance computing (HPC), machine/deep learning inference, ad serving, highly scalable multiplayer gaming, and video encoding.
The R Instance types are good for ad-hoc work since they have the capacity for burstable performances
For more information on EC2 Instance types, please refer to the below URL
https://aws.amazon.com/ec2/instance-types/