You configure Hadoop cluster with both MapReduce frameworks, MapReduce v1 (MRv1) and
MapReduce v2 (MRv2/YARN). Which two MapReduce (computational) daemons do you need to
configure to run on your master nodes?

A.
JobTracker

B.
ResourceManager

C.
ApplicationMaster

D.
JournalNode

E.
NodeManager

Explanation:
http://hadoop.apache.org/docs/current/hadoop-yarn/hadoop-yarn-site/YARN.html
As you can see, ApplicationMaster is in slave nodes instead of master nodes. So it won’t be the
answer.
Only JobTracker and ResourceManger are MapReduce daemons running in master nodes so the
answers