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Cloudera CCA-470 Exam Syllabus Topics:

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

Question 1

Your Hadoop cluster has 25 nodes with a total of 100 TB (4 TB per node) of raw disk space allocated HDFS storage. Assuming Hadoop's default configuration, how much data will you be able to store?

A. Approximately 100TB
B. Approximately 33 TB
C. Approximately 25TB
D. Approximately 10TB

Question 2

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

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

Question 3

You are a Hadoop cluster with a NameNode on host mynamenode. What are two ways to determine available HDFS space in your cluster?

A. Run hadoop dfsadmin -SpaceQuota and subtract HDFS Used from Configured Capacity.
B. Run hadoop fs -du/and locate the DFS Remaining value.
C. Connect to http://mynamemode:50070/ and locate the DFS Remaining value.
D. Run hadoop dfsadmin -report and locate the DFS Remaining value.

Question 4

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

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

Question 5

For a MapReduce job, on a cluster running MapReduce v1 (MRv1), what's the relationship between tasks and task templates?

A. The developer sets the number of task attempts on job submission.
B. There are always exactly as many task attempts as there are tasks.
C. There are always at least as many task attempts as there are tasks.
D. There are always at most as many tasks attempts as there are tasks.

Solutions: