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Cloudera CCA-470 Exam Syllabus Topics:

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

1. Where does a MapReduce job store the intermediate data output from Mappers?

A) On the underlying filesystem of the local disk of the machine on which the Mapper ran.
B) Stores on the underlying filesystem of the local disk of the machine on which the Reducer.
C) In HDFS, in temporary directory defined mapred.tmp.dir.
D) On the underlying filesystem of the local disk machine on which the JobTracker ran.
E) In HDFS, in the job's output directory.

2. What does CDH packaging do on install to facilitate Kerberos security setup?

A) Automatically configure permissions for log files at $MAPPED_LOG_DIR/userlogs
B) Creates directories for temp, hdfs, and mapreduce with correct permissions.
C) Creates a set of pre-configured Kerberos keytab files and their permissions.
D) Creates users for hdfs and mapreduce to facilitate role assignment.
E) Creates and configures you kdc with default cluster values.

3. What additional capability does Ganglia provide to monitor a Hadoop?

A) Ability to monitor NameNode memory usage.
B) Ability to monitor number of files in HDFS.
C) Ability to monitor free task slots.
D) Ability to monitor the amount of free space on HDFS.
E) Ability to monitor processor utilization.

4. Which of the following statements arc accurate in describing features of Hadoop rack awareness? (Choose 2)

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

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

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

Solutions: