CCA-505 Exam Training Practice Tests (Cloudera Certified Administrator for Apache Hadoop (CCAH) CDH5 Upgrade)]

Question 1

You have a cluster running with the Fair Scheduler enabled. There are currently no jobs running on the cluster, and you submit a job A, so that only job A is running on the cluster. A while later, you submit Job B.
now job A and Job B are running on the cluster at the same time. How will the Fair Scheduler handle these two jobs?

A. When job B gets submitted, Job A has to finish first, before job B can scheduled B. When job A gets submitted, it consumes all the tasks slots. C. When job A gets submitted, it doesn't consume all the task slots D. When job B gets submitted, it will get assigned tasks, while Job A continue to run with fewer tasks.

Correct Answer: A

Question 2

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

Correct Answer: C

Question 3

On a cluster running CDH 5.0 or above, you use the hadoop fs -put command to write a 300MB file into a previously empty directory using an HDFS block of 64MB. Just after this command has finished writing 200MB of this file, what would another use see when they look in the directory?

A. They will see the file with its original name. if they attempt to view the file, they will get a ConcurrentFileAccessException until the entire file write is completed on the cluster B. They will see the file with a ._COPYING_ extension on its name. if they view the file, they will see contents of the file up to the last completed block (as each 64MB block is written, that block becomes available) C. The directory will appear to be empty until the entire file write is completed on the cluster D. They will see the file with a ._COPYING_extension on its name. If they attempt to view the file, they will get a ConcurrentFileAccessException until the entire file write is completed on the cluster.

Correct Answer: B

Question 4

Given:

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

A. Yarn rmadmin -refreshQueue B. Yarn application -refreshJobHistory C. Yarn application -kill application_1374638600275_0109 D. Yarn rmadmin -kill application_1374638600275_0109

Correct Answer: C

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Question 5

Your cluster is running MapReduce vserion 2 (MRv2) on YARN. Your ResourceManager is configured to use the FairScheduler. Now you want to configure your scheduler such that a new user on the cluster can submit jobs into their own queue application submission. Which configuration should you set?

A. Yarn.scheduler.fair.user-as-default-queue = false and yarn.scheduler.fair.allowundeclared-people = true B. You can specify new queue name when user submits a job and new queue can be created dynamically if the property yarn.scheduler.fair.allow-undecleared-pools = true C. You can specify new queue name per application in allocation.fair.allow-undeclaredpeople = true automatically assigned to the application queue D. You can specify new queue name when user submits a job and new queue can be created dynamically if yarn.scheduler.fair.user-as-default-queue = false

Correct Answer: D

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