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Cloudera CCA-470 Exam Syllabus Topics:

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

Question 1

The failure of which daemon makes HDFS unavailable on a cluster running MapReduce v1 (MRv1)?

A. Application Manager
B. DataNode
C. Node Manager
D. Resource Manager
E. Secondary NameNode
F. NameNode

Question 2

Choose which best describe a Hadoop cluster's block size storage parameters once you set the HDFS default block size to 64MB?

A. The block size of files in the duster will all at least be 64MB.
B. The block size of files in the cluster will all be the exactly 64MB.
C. The block size of files in the Cluster will all be multiples of 64M
D. The block size of files in the cluster can be determined as the block is written.

Question 3

When determining the most appropriate ratio of processor cores to disk drives for a Hadoop cluster, what are the considerations?

A. Disk drives per machine, nothing else matters.
B. Processor core counts and workload type, the ratio doesn't matter
C. Disk drives per core without consideration to workload types
D. Processors and disk drives per machine, the workload doesn't matter
E. Disk drives per core and workload types

Question 4

Which two features does Kerberos security add to a Hadoop cluster?

A. Encryption for data on disk ("at rest")
B. Root access to the cluster for users hdfs and mapred but non-root acess clients
C. Encryption on all remote procedure calls (RPCs)
D. User authentication on all remote procedure calls (RPcs)
E. Authentication for user access to the cluster against a central server

Question 5

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

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

Solutions: