最新なCloudera CCA-500問題集（60題）、真実試験の問題を全部にカバー！

質問 1：
You want to node to only swap Hadoop daemon data from RAM to disk when absolutely necessary. What should you
do?
A. Delete the /dev/vmswap file on the node
B. Set the ram.swap parameter to 0 in core-site.xml
C. Set vm.swapfile file on the node
D. Delete the /swapfile file on the node
E. Delete the /etc/swap file on the node
正解：C

質問 2：
In CDH4 and later, which file contains a serialized form of all the directory and files inodes in the filesystem, giving the
NameNode a persistent checkpoint of the filesystem metadata?
A. Edits_N-M (where N-M transactions between transaction ID N and transaction ID N)
B. fstime
C. Fsimage_N (where N reflects transactions up to transaction ID N)
D. VERSION
正解：C
解説: (Pass4Test メンバーにのみ表示されます)

質問 3：
You are configuring your cluster to run HDFS and MapReducer v2 (MRv2) on YARN. Which two daemons needs to be installed on your cluster's master nodes?
A. NameNode
B. DataNode
C. ResourceManager
D. HMaster
E. TaskManager
F. JobTracker
正解：A,F

質問 4：
Which process instantiates user code, and executes map and reduce tasks on a cluster running MapReduce v2 (MRv2)
on YARN?
A. NameNode
B. DataNode
C. ApplicationMaster
D. ResourceManager
E. TaskTracker
F. NodeManager
G. JobTracker
正解：G

質問 5：
Table schemas in Hive are:
A. Stored along with the data in HDFS
B. Stored in the Metadata
C. Stored in ZooKeeper
D. Stored as metadata on the NameNode
正解：A

質問 6：
Which two are features of Hadoop's rack topology?
A. Rack location is considered in the HDFS block placement policy
B. HDFS is rack aware but MapReduce daemon are not
C. Hadoop gives preference to intra-rack data transfer in order to conserve bandwidth
D. Even for small clusters on a single rack, configuring rack awareness will improve performance
E. Configuration of rack awareness is accomplished using a configuration file. You cannot use a rack topology script.
正解：A,D