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Cloudera CCA-410 Exam - Cheat-Test.com

Free CCA-410 Sample Questions:

Q: 1
Choose three reasons why should you run the HDFS balancer periodically?
A. To improve data locality for MapReduce tasks.
B. To ensure that there is consistent disk utilization across the DataNodes.
C. To ensure that there is capacity in HDFS tor additional data.
D. To ensure that all blocks in the cluster are 128MB in size.
E. To help HDFS deliver consistent performance under heavy loads.
Answer: A,B,E

Q: 2
What additional capability does Ganglia provide to monitor a Hadoop?
A. Ability to monitor the amount of free space on HDFS.
B. Ability to monitor number of files in HDFS.
C. Ability to monitor processor utilization.
D. Ability to monitor free task slots.
E. Ability to monitor NameNode memory usage.
Answer: E

Q: 3
In a cluster configured with HDFS High Availability (HA) but NOT HDFS federation, each map task run:
A. In the same Java Virtual Machine as the DataNode.
B. In the same Java Virtual Machine as the TaskTracker
C. In its own Java Virtual Machine.
D. In the same Java Virtual Machine as the JobTracker.
Answer: C

Q: 4
Where does a MapReduce job store the intermediate data output from Mappers?
A. On the underlying filesystem of the local disk machine on which the JobTracker ran.
B. In HDFS, in the job’s output directory.
C. In HDFS, in temporary directory defined mapred.tmp.dir.
D. On the underlying filesystem of the local disk of the machine on which the Mapper ran.
E. Stores on the underlying filesystem of the local disk of the machine on which the Reducer.
Answer: D

Q: 5
Which two features does Kerberos security add to a Hadoop cluster?
A. Authentication for user access to the cluster against a central server
B. Encryption for data on disk ("at rest")
C. Encryption on all remote procedure calls (RPCs)
D. User authentication on all remote procedure calls (RPcs)
E. Root access to the cluster for users hdfs and mapred but non-root acess clients
Answer: C,D

Q: 6
Identify the daemon that performs checkpoint operations of the namespace state in a cluster configured with HDFS High Availability (HA) using Quorum based-storage?
A. NodeManeger
B. BackupNode
C. JournalNode
D. Standby NameNode
E. Secondary NameNode
F. CheckpointNode
G. NameNode
Answer: E


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