CCA-505無料問題集「Cloudera Certified Administrator for Apache Hadoop (CCAH) CDH5 Upgrade」

質問 1

Which three basic configuration parameters must you set to migrate your cluster from MapReduce1 (MRv1) to MapReduce v2 (MRv2)?

（A）Configure the ResourceManager hostname and enable node services on YARN by
setting the following property in yarn-site.xml:
<name>yarn.resourcemanager.hostname</name>
<value>your_responseManager_hostname</value>

（B）Configure the NodeManager to enable MapReduce services on YARN by adding
following property in yarn-site.xml:
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>

（C）Configure the number of map tasks per job on YARN by setting the following property in
mapred-site.xml:
<name>mapreduce.job.maps</name>
<value>2</value>

（D）Configure a default scheduler to run on YARN by setting the following property in
sapred-site.xml:
<name>mapreduce.jobtracker.taskScheduler</name>
<value>org.apache.hadoop.mapred.JobQueueTaskScheduler</value>

（E）Configure the NodeManager hostname and enable services on YARN by setting the
following property in yarn-site.xml:
<name>yarn.nodemanager.hostname</name>
<value>your_nodeManager_hostname</value>

（F）Configure MapReduce as a framework running on YARN by setting the following
property in mapred-site.xml:
<name>mapreduce.framework.name</name>
<value>yarn</value>

正解：A、C、E 解答を投票する

質問 2

You have a Hadoop cluster running HDFS, and a gateway machine external to the cluster from which clients submit jobs. What do you need to do in order to run on the cluster and submit jobs from the command line of the gateway machine?

（A）Install the impslad daemon, statestored daemon, and catalogd daemon on each machine in the cluster and on the gateway node

（B）Install the impalad daemon, statestored daemon, and catalogd daemon on each machine in the cluster, and the impala shell on your gateway machine

（C）Install the impalad daemon and the impala shell on your gateway machine, and the statestored daemon and catalog daemon on one of the nodes in the cluster

（D）Install the impalad daemon, the statestored daemon, the catalogd daemon, and the impala shell on your gateway machine

（E）Install the impalad daemon on each machine in the cluster, the statestored daemon and catalogd daemon on one machine in the cluster, and the impala shell on your gateway machine

正解：E 解答を投票する

質問 3

Which Yarn daemon or service monitors a Container's per-application resource usage (e.g, memory, CPU)?

（A）ApplicationMaster

（B）ResourceManager

（C）ApplicationManagerService

（D）NodeManager

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 4

A slave node in your cluster has four 2TB hard drives installed (4 x 2TB). The DataNode is configured to store HDFS blocks on the disks. You set the value of the dfs.datanode.du.reserved parameter to 100GB. How does this alter HDFS block storage?

（A）All hard drives may be used to store HDFS blocks as long as atleast 100 GB in total is available on the node

（B）A maximum of 100 GB on each hard drive may be used to store HDFS blocks

（C）100 GB on each hard drive may not be used to store HDFS blocks

（D）25 GB on each hard drive may not be used to store HDFS blocks

正解：A 解答を投票する

CCA-505 無料問題集「Cloudera Certified Administrator for Apache Hadoop (CCAH) CDH5 Upgrade」

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