What additional capability does Ganglia provide to monitor a Hadoop?

Choose three reasons why should you run the HDFS balancer periodically?

Which two features does Kerberos security add to a Hadoop cluster?

Where does a MapReduce job store the intermediate data output from Mappers?

In a cluster configured with HDFS High Availability (HA) but NOT HDFS federation, each map task
run:

Your existing Hadoop cluster has 30 slave nodes, each of which has 4 x 2T hard drives. You plan
to add another 10 nodes. How much disk space can your new nodes contain?

Identify the daemon that performs checkpoint operations of the namespace state in a cluster
configured with HDFS High Availability (HA) using Quorum based-storage?

You are running a Hadoop cluster with NameNode on host mynamenode, a secondary NameNode
on host mysecondary and DataNodes.
Which best describes how you determine when the last checkpoint happened?

Your developers request that you enable them to use Hive on your Hadoop cluster. What do install
and/or configure?

You have cluster running with the FIFO Scheduler enabled. You submit a large job A to the
cluster, which you expect to run for one hour. Then, you submit job B to cluster, which you expect
to run a couple of minutes only.
You submit both jobs with the same priority.
Which two best describes how the FIFO Scheduler arbitrates the cluster resources for a job and its
tasks?