최신 CCA-500 무료덤프 - Cloudera Certified Administrator for Apache Hadoop (CCAH)

문제1

Your Hadoop cluster is configuring with HDFS and MapReduce version 2 (MRv2) on YARN. Can you configure a worker
node to run a NodeManager daemon but not a DataNode daemon and still have a functional cluster?

A. Yes. The daemon will receive Reducer tasks only

B. Yes. The daemon will receive data from the NameNode to run Map tasks

C. Yes. The daemon will receive Map tasks only

D. Yes. The daemon will get data from another (non-local) DataNode to run Map tasks

정답: B

문제2

Your company stores user profile records in an OLTP databases. You want to join these records with web server logs
you have already ingested into the Hadoop file system. What is the best way to obtain and ingest these user records?

A. Ingest using Hive's IQAD DATA command

B. Ingest with Hadoop streaming

C. Ingest with sqoop import

D. Ingest using the HDFS put command

E. Ingest with Pig's LOAD command

정답: C,E

문제3

Your cluster is running MapReduce version 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.fair-as-default-queue = false and yarn.scheduler.fair.allowundecleared-
pools = 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 when user submits a job and new queue can be created dynamically if yarn
.schedule.fair.user-as-default-queue = false

D. You can specify new queue name per application in allocations.xml file and have new jobs automatically assigned
to the application queue

정답: B

문제4

What does CDH packaging do on install to facilitate Kerberos security setup?

A. Automatically configures permissions for log files at &MAPRED_LOG_DIR/userlogs

B. Creates users for hdfs and mapreduce to facilitate role assignment

C. Creates and configures your kdc with default cluster values

D. Creates directories for temp, hdfs, and mapreduce with the correct permissions

E. Creates a set of pre-configured Kerberos keytab files and their permissions

정답: B

문제5

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 the command:
Hadoop jar j.jar DriverClass /data/input/data/output
The error message returned includes the line:
PriviligedActionException as:training (auth:SIMPLE)
cause:org.apache.hadoop.mapreduce.lib.input.invalidInputException:
Input path does not exist: file:/data/input
What is the cause of the error?

A. The directory name is misspelled in HDFS

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

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

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

E. The output directory already exists

정답: D

문제6

You have a cluster running with a FIFO scheduler enabled. You submit a large job A to the cluster, which you expect to
run for one hour. Then, you submit job B to the cluster, which you expect to run a couple of minutes only.
You submit both jobs with the same priority.
Which two best describes how FIFO Scheduler arbitrates the cluster resources for job and its tasks?

A. The FIFO Scheduler will give, on average, and equal share of the cluster resources over the job lifecycle

B. Tasks are scheduled on the order of their job submission

C. Given job A and submitted in that order, all tasks from job A are guaranteed to finish before all tasks from job B

D. Because there is a more than a single job on the cluster, the FIFO Scheduler will enforce a limit on the percentage of
resources allocated to a particular job at any given time

E. The order of execution of job may vary

F. The FIFO Scheduler will pass an exception back to the client when Job B is submitted, since all slots on the cluster
are use

정답: A,D

최신 CCA-500 무료덤프 - Cloudera Certified Administrator for Apache Hadoop (CCAH)

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