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

1. Hadoop provider web interface can be used for all of the following EXCEPT: (choose 1)

A) Keeping track of processor and memory utilization on each individual slave node.
B) Browsing files in HDFS.
C) Keeping track of jobs running on the cluster.
D) Keeping track of the number of files and directories stored in HDFS.
E) Keeping track of tasks running on each individual slave node.

2. You configure Hadoop cluster with both MapReduce frameworks, MapReduce v1 (MRv1) and MapReduce v2 (MRv2/YARN). Which two MapReduce (computational) daemons do you need to configure to run on your master nodes?

A) ResourceManager
B) JournalNode
C) ApplicationMaster
D) JobTracker
E) NodeManager

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

4. Cluster Summary
45 files and directories, 12 blocks = 57 total. Heap Size is 15.31 MB / 193.38MB(7%)

Refer to the above screenshot.
You configure the Hadoop cluster with seven DataNodes and the NameNode's web UI displays the details shown in the exhibit.
What does this tells you?

A) The DataNode JVM on one host is not active.
B) The HDFS cluster is in the safe mode.
C) One physical host crashed.
D) Your cluster has lost all HDFS data which had blocks stored on the dead DataNode.

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

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

Solutions: