Cloudera Certified Administrator for Apache Hadoop CDH4 : CCA-410 exam

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Cloudera CCA-410 Exam Syllabus Topics:

Cloudera Certified Administrator for Apache Hadoop CDH4 Sample Questions:

1. On a cluster running MapReduce v1 (MRv1), a MapReduce job is given a directory of 10 plain text as its input directory. Each file is made up of 3 HDFS blocks. How many Mappers will run?

A) 10
B) We cannot say; the number of Mappers is determined by the developer
C) 1
D) 30

2. In the execution of a MapReduce job, where does the mapper place the intermediate data in each map task?

A) The mapper stores the intermediate data on the underlying filesystem of the local disk of the machine which ran the map task
B) The hadoop framework holds the intermediate data in the task trackers memory until it is transferred to the reducers
C) The mapper transfers the intermediate data to the jobtracker, which then sends it to the reducers
D) The mapper transfer the intermediate data immediately to the reducers as it is generated by map task.

3. You configure your hadoop cluster with mapreduce V1 (MRv1) along with HDFS high availability (HA) Quorum-based storage. On which nodes should you configure and run your journal node daemon(s) to guarantee a quorum?

A) Jobtracker
B) Namenode
C) On each datanode
D) Namenode and standby namenode
E) standby namenode, jobtracker, resourcemanager
F) Namenode, standby namenode and jobtracker
G) standby namenode

4. Identify which two daemons typically run each slave node in a Hadoop cluster running MapReduce v1 (MRv1)

A) NameNode
B) DataNode
C) Secondary NameNode
D) NodeManager
E) TaskTracker
F) JobTracker

5. You configure your hadoop development cluster with both mapreduce frameworks, mapreduceV1 (MRv1) and mapreduce v2 (MRv2/YARN). You plan to run only one set of mapreduce daemons at a time in this development environment (running both simultaneously results in an unsuitable cluster but configure in both moving between them is fine). Which two mapreduce (capitation) daemons do you need to configure to run on your masternodes?

A) Jobtracker
B) Containermanager
C) Applicationmaster
D) Resourcemanager
E) Journalnode
F) Nodemanager

Solutions: