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Cloudera CCA-410 Exam Syllabus Topics:

Cloudera Certified Administrator for Apache Hadoop CDH4 Sample Questions:

1. Which MapReduce daemon instantiates user code, and executes map and reduce tasks on a cluster running MapReduce v1 (MRv1)?

A) ResourceManager
B) DataNode
C) NodeManager
D) NameNode
E) JobTracker
F) TaskTracker
G) ApplicationMaster

2. Which scheduler would you deploy to ensure that your cluster allows short jobs to finish within a reasonable time without starving long-running jobs?

A) Fair Scheduler
B) FIFO Scheduler
C) Completely Fair Scheduler (CFS)
D) Capacity Scheduler

3. Your Hadoop cluster has 12 slave nodes, a block size set to 64MB, and a replication factor of three.
Choose which best describes how the Hadoop Framework distributes block writes into HDFS from a Reducer outputting a 150MB file?

A) The slave node on which the Reducer runs gets the first copy of every block written. Other block replicas will be placed on other nodes.
B) The Reducer will generate twelve blocks and write them to slave nodes nearest the node on which the Reducer runs.
C) Reducers don't write blocks into HDFS
D) The Reducer will generate nine blocks and write them randomly to nodes throughout the cluster.

4. Your developers request that you enable them to use pig on your hadoop cluster. What do you need to configure and / or install?

A) Install the pig interpreter on the master node which is running the jobtracker
B) Install the pig interpreter on all nodes in the cluster, and the client machines
C) Install the pig interpreter on the client machines only.
D) Install the pig jar's on the all slave nodes in the cluster the pig interpreter on the client machines

5. What happens if a Mapper on one node goes into an infinite loop while running a MapReduce job?

A) After a period of time, the JobTracker will restart the TaskTracker on the node on which the map task is running
B) After a period of time, the TaskTracker will kill the Map Task.
C) The job will immediately fail.
D) The Mapper will run indefinitely; the TaskTracker must be restarted to kill it

Solutions: