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

質問 1

Which process instantiates user code, and executes map and reduce tasks on a cluster running MapReduce V2 (MRv2) on YARN?

（A）ApplicationMaster

（B）ResourceManager

（C）DataNode

（D）NodeManager

（E）JobTracker

（F）TaskTracker

（G）NameNode

正解：E 解答を投票する

質問 2

You are working on a project where you need to chain together MapReduce, Pig jobs. You also needs the ability to use forks, decision, and path joins. Which ecosystem project should you use to perform these actions?

（A）HUE

（B）Oozie

（C）HBase

（D）Sqoop

（E）Zookeeper

正解：B 解答を投票する

質問 3

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, it will get assigned tasks, while Job A continue to run with fewer tasks.

（B）When job A gets submitted, it consumes all the tasks slots.

（C）When job B gets submitted, Job A has to finish first, before job B can scheduled

（D）When job A gets submitted, it doesn't consume all the task slots

正解：C 解答を投票する

質問 4

Your cluster's mapped-site.xml includes the following parameters
<name>mapreduce.map.memory.mb</name>
<value>4096<value/>
<name>mapreduce.reduce.memory,mb</name>
<value>8192</value>
And your cluster's yarn-site.xml includes the following parameters
<name>yarn.nodemanager/vmen-pmem-ratio</name>
<value>2.1</value>
What is the maximum amount of virtual memory allocated for each map before YARN will kill its Container?

（A）17.2 GB

（B）4 GB

（C）8.2 GB

（D）24.6 GB

正解：C 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 5

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Your cluster has the following characteristics:
A rack aware topology is configured and on
Replication is not set to 3
Cluster block size is set to 64 MB
Which describes the file read process when a client application connects into the cluster and requests a 50MB file?

（A）The client queries the NameNode for the locations of the block, and reads all three copies. The first copy to complete transfer to the client is the one the client reads as part of Hadoop's speculative execution framework.

（B）The client queries the NameNode for the locations of the block, and reads from a random location in the list it retrieves to eliminate network I/O leads by balancing which nodes it retrieves data from at any given time.

（C）The client queries the NameNode which retrieves the block from the nearest DataNode to the client and then passes that block back to the client.

（D）The client queries the NameNode for the locations of the block, and reads from the first location in the list it receives.

正解：C 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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