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Cloudera CCA-505 Exam Dumps

Vendor: Cloudera
Exam Code: CCA-505
Exam Name: Cloudera Certified Administrator for Apache Hadoop (CCAH) CDH5 Upgrade Exam
Certification: CCAH
Total Questions: 45 Q&A
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CCA-505 Online Practice Questions and Answers

Questions 1

Given:

You want to clean up this list by removing jobs where the state is KILLED. What command you enter?

A. Yarn application kill application_1374638600275_0109

B. Yarn rmadmin refreshQueue

C. Yarn application refreshJobHistory

D. Yarn rmadmin kill application_1374638600275_0109

Show Answer

Questions 2

Your cluster has the following characteristics:

A rack aware topology is configured and on

Replication is not set to 3

Cluster block size is set to 64 MB

Which describes the file read process when a client application connects into the cluster and requests a 50MB file?

A. The client queries the NameNode which retrieves the block from the nearest DataNode to the client and then passes that block back to the client.

B. The client queries the NameNode for the locations of the block, and reads from a random location in the list it retrieves to eliminate network I/O leads by balancing which nodes it retrieves data from at any given time.

C. The client queries the NameNode for the locations of the block, and reads all three copies. The first copy to complete transfer to the client is the one the client reads as part of Hadoop's

speculative execution framework.

D. The client queries the NameNode for the locations of the block, and reads from the first location in the list it receives.

Show Answer

Questions 3

A user comes to you, complaining that when she attempts to submit a Hadoop job, it fails. There is a directory in HDFS named /data/input. The Jar is named j.jar, and the driver class is named DriverClass. She runs command:

hadoop jar j.jar DriverClass /data/input/data/output

The error message returned includes the line:

PrivilegedActionException as:training (auth:SIMPLE) cause.apache.hadoop.mapreduce.lib.input.InvalidInputException: Input path does not exits: file :/data/input

What is the cause of the error?

A. The Hadoop configuration files on the client do not point to the cluster

B. The directory name is misspelled in HDFS

C. The name of the driver has been spelled incorrectly on the command line

D. The output directory already exists

E. The user is not authorized to run the job on the cluster

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