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Cloudera CCA-470 Exam Syllabus Topics:

Cloudera Certified Administrator for Apache Hadoop CDH4 Upgrade Exam (CCAH) Sample Questions:

Question 1

What information is stored on disk on the NameNode? (Choose 4)

A. An edit log of changes that have been made since the last snapshot compaction by the Secondary NameNode.
B. A catalog of DataNodes and the blocks that are stored on them.
C. An edit log of changes that have been made since the last backup of the NameNode.
D. Names of the files in HDFS.
E. The status of the heartbeats of each DataNode.
F. File permissions of the files in HDFS.
G. The directory structure of the files in HDFS.

Question 2

Under which scenario would it be most appropriate to consider using faster (e.g 10 Gigabit) Ethernet as the network fabric for your Hadoop cluster?

A. When the typical workloads consumes a large amount of input data, relative to the entire capacity of HDFS.
B. When the typical workloads generates a large amount of output data, significantly larger than the amount of intermediate data.
C. When the typical workloads consists of processor-intensive tasks.
D. When the typical workloads generates a large amount of intermediate data, on the order of the input data itself.

Question 3

Which daemon spawns child JVMs to perform MapReduce processing?

A. JobTracker
B. NameNode
C. DataNode
D. TaskTracker
E. Secondary NameNode

Question 4

Which MapReduce v2 (MR2/YARN) daemon is a per-machine slave responsible for launching application containers and monitoring application resources usage?

A. ResourceManager
B. ApplicationMaster
C. NodeManager
D. JobTracker
E. TaskTracker
F. ApplicationMasterService

Question 5

Which command does Hadoop offer to discover missing or corrupt HDFS data?

A. Fsck
B. The map-only checksum utility,
C. Hadoop does not provide any tools to discover missing or corrupt data; there is no need because three replicas are kept for each data block.
D. Dskchk
E. Du

Solutions: