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Cloudera CCA-410 Exam Syllabus Topics:

Cloudera Certified Administrator for Apache Hadoop CDH4 Sample Questions:

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

2. Your developers request that you enable them to use pig on your hadoop cluster. What do you need to configure and / or install?

A) Install the pig interpreter on the master node which is running the jobtracker
B) Install the pig jar's on the all slave nodes in the cluster the pig interpreter on the client machines
C) Install the pig interpreter on the client machines only.
D) Install the pig interpreter on all nodes in the cluster, and the client machines

3. How must you format the underlying filesystem of your Hadoop cluster's slave nodes running on Linux?

A) They must be formatted as either ext3 or ext4
B) They may be formatted in nay Linux filesystem
C) They must be formatted as HDFS
D) They must not be formatted - - HDFS will format the filesystem automatically

4. On a cluster running MapReduce v1 (MRv1), a MapReduce job is given a directory of 10 plain text as its input directory. Each file is made up of 3 HDFS blocks. How many Mappers will run?

A) 30
B) 10
C) 1
D) We cannot say; the number of Mappers is determined by the developer

5. Your developers request that you enable them to use Hive on your Hadoop cluster. What do install and/or configure?

A) Install the Hive interpreter on the client machines only, and configure a shared remote Hive Metastore.
B) Install the Hive Interpreter on the client machines and all the slave nodes, and configure a shared remote Hive Metastore.
C) Install the Hive interpreter on the master node running the JobTracker, and configure a shared remote Hive Metastore.
D) Install the Hive interpreter on the client machines and all nodes on the cluster

Solutions: