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Cloudera CCA-470 Exam Syllabus Topics:

Cloudera Certified Administrator for Apache Hadoop CDH4 Upgrade Exam (CCAH) Sample Questions:

Question 1

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. ResourceManager
B. JobTracker
C. NodeManager
D. ApplicationMaster
E. JournalNode

Question 2

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?

A. Connect to the web UI of the Secondary NameNode (http://mysecondarynamenode:50090) and look at the "Last Checkpoint" information
B. Connect to the web UI of the NameNode (http://mynamenode:50070/) and look at the "Last Checkpoint" information
C. Execute hdfs dfsadmin -saveNameSpace on the command line which returns to you the last checkpoint value in fstime file.
D. Execute hdfs dfsadmin -report on the command line in and look at the Last Checkpoint information.

Question 3

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. Capacity Scheduler
D. Completely Fair Scheduler (CFS)

Question 4

Which three distcp features can you utilize on a Hadoop cluster?

A. Use distcp to copy HBase table files.
B. Use distcp to copy files only between two clusters or more. You cannot use distcp to copy data between directories inside the same cluster.
C. Use distcp to run an internal MapReduce job to copy files.
D. Use distcp to copy physical blocks from the source to the target destination in your cluster.
E. Use distcp to copy data between directories inside the same cluster.

Question 5

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

A. To ensure that there is consistent disk utilization across the DataNodes.
B. To ensure that all blocks in the cluster are 128MB in size.
C. To help HDFS deliver consistent performance under heavy loads.
D. To improve data locality for MapReduce tasks.
E. To ensure that there is capacity in HDFS tor additional data.

Solutions: