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Exam Code: CCA-500Exam Name: Cloudera Certified Administrator for Apache Hadoop (CCAH)
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CCA-500 Latest Test Vce Free Total Q&A: 60 Questions and Answers
Last Update: 2017-02-28
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NO.1 You have a cluster running with the fair Scheduler enabled.
There are currently no jobs running on the cluster, and you submit a job A, so that only job A is
running on the cluster.
A while later, you submit Job B.now Job A and Job B are running on the cluster at the same time.
How will the Fair Scheduler handle these two jobs?
A. When Job B gets submitted, Job A has to finish first, before job B can gets scheduled.
B. When Job B gets submitted, it will get assigned tasks, while job A continues to run with fewer
tasks.
C. When Job A gets submitted, it consumes all the task slots.
D. When Job A gets submitted, it doesn't consumes all the task slots.
Answer: A
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NO.2 You have installed a cluster HDFS and MapReduce version 2 (MRv2) on YARN. You have no
dfs.hosts entry(ies) in your hdfs-site.xml configuration file.
You configure a new worker node by setting fs.default.name in its configuration files to point to the
NameNode on your cluster, and you start the DataNode daemon on that worker node.
What do you have to do on the cluster to allow the worker node to join, and start sorting HDFS
blocks?
A. Creating a dfs.hosts file on the NameNode, add the worker Node's name to it, then issue the
command hadoop dfsadmin -refresh Nodes = on the Namenode
B. Restart the NameNode
C. Without creating a dfs.hosts file or making any entries, run the commands
hadoop.dfsadminrefreshModes on the NameNode
D. Nothing; the worker node will automatically join the cluster when NameNode daemon is started
Answer: C
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