Cloudera Certified Administrator for Apache Hadoop (CCAH) CDH5 Upgrade Exam (CCA-505) Free Practice Test

Question 1

Your cluster is configured with HDFS and MapReduce version 2 (MRv2) on YARN. What is the result when you execute: hadoop jar samplejar.jar MyClass on a client machine?

A. SampleJar.Jar is serialized into an XML file which is submitted to the ApplicationMaster

B. SampleJar.Jar is sent directly to the ResourceManager

C. SampleJar.jar is sent to the ApplicationMaster which allocation a container for Sample.jar

D. SampleJar.Jar is placed in a temporary directly in HDFS

Correct Answer: C

Question 2

Your cluster implements HDFS High Availability (HA). Your two NameNodes are named nn01 and nn02. What occurs when you execute the command: hdfs haadmin -failover nn01 nn02

A. nn01 is fenced, and nn02 becomes the active NameNode

B. nn01 becomes the standby NamNode and nn02 becomes the active NAmeNode

C. nn02 becomes the standby NameNode and nn01 becomes the active NameNode

D. nn02 is fenced, and nn01 becomes the active NameNode

Correct Answer: A

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Question 3

A slave node in your cluster has four 2TB hard drives installed (4 x 2TB). The DataNode is configured to store HDFS blocks on the disks. You set the value of the dfs.datanode.du.reserved parameter to 100GB. How does this alter HDFS block storage?

A. All hard drives may be used to store HDFS blocks as long as atleast 100 GB in total is available on the node

B. 25 GB on each hard drive may not be used to store HDFS blocks

C. 100 GB on each hard drive may not be used to store HDFS blocks

D. A maximum of 100 GB on each hard drive may be used to store HDFS blocks

Correct Answer: A

Question 4

You are working on a project where you need to chain together MapReduce, Pig jobs. You also needs the ability to use forks, decision, and path joins. Which ecosystem project should you use to perform these actions?

A. Sqoop

B. HUE

C. HBase

D. Oozie

E. Zookeeper

Correct Answer: D

Question 5

You are configuring a cluster running HDFS, MapReduce version 2 (MRv2) on YARN
running Linux. How must you format the underlying filesystem of each DataNode?

A. They must be formatted as HDFS

B. They must not formatted - - HDFS will format the filesystem automatically

C. They may be formatted in any Linux filesystem

D. They must be formatted as either ext3 or ext4

Correct Answer: D

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Cloudera Certified Administrator for Apache Hadoop (CCAH) CDH5 Upgrade (CCA-505) Free Practice Test