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  5. Cloudera Certified Administrator for Apache Hadoop (CCAH) Questions and Answers

CCA-500 Cloudera Certified Administrator for Apache Hadoop (CCAH) Questions and Answers

Questions 4

You have just run a MapReduce job to filter user messages to only those of a selected geographical region. The output for this job is in a directory named westUsers, located just below your home directory in HDFS. Which command gathers these into a single file on your local file system?

Options:

A.

Hadoop fs –getmerge –R westUsers.txt

B.

Hadoop fs –getemerge westUsers westUsers.txt

C.

Hadoop fs –cp westUsers/* westUsers.txt

D.

Hadoop fs –get westUsers westUsers.txt

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Questions 5

Which YARN process run as “container 0” of a submitted job and is responsible for resource qrequests?

Options:

A.

ApplicationManager

B.

JobTracker

C.

ApplicationMaster

D.

JobHistoryServer

E.

ResoureManager

F.

NodeManager

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Questions 6

Which YARN daemon or service monitors a Controller’s per-application resource using (e.g., memory CPU)?

Options:

A.

ApplicationMaster

B.

NodeManager

C.

ApplicationManagerService

D.

ResourceManager

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Questions 7

Table schemas in Hive are:

Options:

A.

Stored as metadata on the NameNode

B.

Stored along with the data in HDFS

C.

Stored in the Metadata

D.

Stored in ZooKeeper

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Questions 8

Which process instantiates user code, and executes map and reduce tasks on a cluster running MapReduce v2 (MRv2) on YARN?

Options:

A.

NodeManager

B.

ApplicationMaster

C.

TaskTracker

D.

JobTracker

E.

NameNode

F.

DataNode

G.

ResourceManager

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Questions 9

Your Hadoop cluster contains nodes in three racks. You have not configured the dfs.hosts property in the NameNode’s configuration file. What results?

Options:

A.

The NameNode will update the dfs.hosts property to include machines running the DataNode daemon on the next NameNode reboot or with the command dfsadmin –refreshNodes

B.

No new nodes can be added to the cluster until you specify them in the dfs.hosts file

C.

Any machine running the DataNode daemon can immediately join the cluster

D.

Presented with a blank dfs.hosts property, the NameNode will permit DataNodes specified in mapred.hosts to join the cluster

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Exam Code: CCA-500
Exam Name: Cloudera Certified Administrator for Apache Hadoop (CCAH)
Last Update: May 19, 2024
Questions: 60

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