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H13-723_V2.0 HCIP-Big Data Developer V2.0 Questions and Answers

Questions 4

existSpark, assuminglinesIs anDStreamObject, which of the following statements can periodically count the number of words on this stream?

Options:

A.

lines.flatMap(_.split??)).map(word=>(word,1)).reduce(_+_).print ( )

B.

lines.flatMap(_.split??)).map(word=>(word,word.length())).reduceByKey(_+_).print ( )

C.

lines.flatMap(_.split??)).map(word=>(word,1)).reduceByKey(_+_).print ( )

D.

lines.flatMap(_.split??)).flatmap(word=>(word,1)).groupByKey(_+_).print ( )

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Questions 5

existFusionInsight HDin, aboutHivepartition (partition) function, which is wrong as described below?

Options:

A.

Partition fields are defined when the table is created

B.

There can only be one partition field, and multi-level partitions cannot be created

C.

Using partitions can reduce the data scan range of some queries, thereby improving query efficiency

D.

Partition fields can be used aswherecondition of the sentence

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Questions 6

SparkWhat kind of parameter setting methods does the application have? (multiple choice)

Options:

A.

in the application configuration filespark-defaults.confconfigure in

B.

When submitting your application, pass—confmake settings

C.

In the application code, passSparkContextofsetPropertymethod to set

D.

In the application code, passSparkConfobject to set

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Questions 7

FusionInsight HDofHive, user-definedUDFcan andHiveBuilt-inUDFduplicate name, in this case,

will use user-definedUDF.

Options:

A.

True

B.

False

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Questions 8

HDFSThere is a file in the cluster and directorytext.txt, which of the following commands can find theDatNodenode

information?

Options:

A.

hdfs fsck /test.txt–files

B.

hdfs fsck /text.txt–locations

C.

hdfs fsck /test.txt–blocks

D.

hdfs fsck /test.txt–list–corruptfileblocks

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Questions 9

existFusionInsight HDofHBase, which of the following scenarios will not triggerFlushoperate?

Options:

A.

When the client initiates a scan request, it willscan cachingset too large

B.

Initiate by client-specified methodFlushdo

C.

RegionServerTotal memory exceeds threshold

D.

RegionofMemStoreset over threshold

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Questions 10

FusionInsight HDin, aboutOoze, which of the following operations can be performed on a suspended job? (many

select)

Options:

A.

kill

B.

run

C.

resume

D.

submit

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Questions 11

existKafkamiddle,ProducerThis can be done by configuring the synchronization parameters (producer.type) to ensure that data is sent in order.

Options:

A.

True

B.

False

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Questions 12

which come downRedisIs the command an atomic operation?

Options:

A.

INCR(increment the stored digital value by one)

B.

HINCRBY(for the hash tablekeydomain infieldvalue plus incrementincrement)

C.

LPUSH(for linked listspushoperate)

D.

All of the above

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Questions 13

SparkThe calculation logic of the application will be parsed orDNG, this parsing operation is completed by which of the following function modules?

Options:

A.

Client

B.

Application Master

C.

Executor

D.

Driver

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Questions 14

FusionInsight HDWhich of the following belong toOozieofMapReduce Actionconfiguration item? (multiple choice)

Options:

A.

name-node

B.

source

C.

mapred.mapper.class

D.

job-tracker

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Questions 15

HDFSclient withNWhen a copy writes a file, which of the following is true about the writing process? (multiple choice)

Options:

A.

eachDataNodemaximum storage1copies.

B.

Support multiple users to write to the same file at the same time.

C.

The first copy of the data block is placed preferentially on the node where the client writing the data block is located.

D.

Copied file blocks all exist on the same rack by default.

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Questions 16

existFusionInsight HDWhen developing applications with a secure version, you can usekeytabDocuments are authenticated securely.

Options:

A.

True

B.

False

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Questions 17

MapReduceIn which of the following is the task ultimately performed?

Options:

A.

NodeManager

B.

container

C.

ResourceManager

D.

AppMaster

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Questions 18

HDFSWhich of the following business scenarios is not applicable to?

Options:

A.

Mass data storage

B.

Lots of small file storage

C.

large file storage

D.

Streaming file storage

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Questions 19

Spark StreamingAs a micro-batch stream processing engine, it converts the data of each time slice into aRDDone of partitions are calculated.

Options:

A.

True

B.

False

twenty two

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Questions 20

when aMapReduceWhen the application is executed, which of the following actions ismapoccurred before the stage?

Options:

A.

split

B.

combine

C.

partition

D.

sort

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Questions 21

There are the following scenarios: new data is generated by the online system every day500G, you need to make statistics on these data by day, week, month and other dimensions

summary.

ask if it is suitable for useHiveWhat kind of table to handle?

Options:

A.

Bucket table, bucket according to day

B.

Partition table, partitioned by day

C.

skew table, skew field select date, skew value random

D.

partition+Bucket table, partitioned by time, each partition2560buckets

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Questions 22

Spark StreamingAs a micro-batch stream processing engine, it converts the data of each time slice into aRDDmiddle

A partition is calculated.

Options:

A.

True

B.

False

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Questions 23

Fusionlnsigt HD an application to completeKerberosSecurity authentication, which of the following options must be used?

(multiple choice)

Options:

A.

krb5.confconfiguration file

B.

existFusionInsight ManagerUser account applied on

C.

user accountkeytabdocument

D.

jaas.confconfiguration file

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Questions 24

forHBase rowkeyThe design principles described below are correct? (multiple choice)

Options:

A.

Attribute values with high access weight are placed inRowKeyFront

B.

Attribute values with high access weight are placed inRowkeysecond half

C.

Attribute values with good dispersion are placed inRowkeyfirst half

D.

Attribute values with good dispersion are placed inRowkeysecond half

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Questions 25

existHBaseIn table design, it is common to multiple businessesrowkey, what are the possible countermeasures for situations that lead to data access contradictions?

slightly? (multiple choice)

Options:

A.

compromise method (rowkeyDesign takes into accountAandBbusiness needs)

B.

Redundancy method (use space for time factory efficiency)

C.

Create secondary index

D.

pre-scoreregion

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Questions 26

FusionInsigt HD an application to completeKerberosSecurity certification, which of the following options are required

Required (multiple choice)

Options:

A.

Krb5.confconfiguration file

B.

existfusion insight managerUser account applied on

C.

user accountkeytabdocument

D.

Jaas.confconfiguration file

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Questions 27

SparkWhat kind of parameter setting methods does the application have? (multiple choice)

Options:

A.

in the application configuration filespark-defaults.confconfigure in

B.

When submitting your application, by-confmake settings

C.

In the application code, passSparkContextofsetPropertymethod to set

D.

In the application code, passSparkConfobject to set

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Questions 28

existSpark, which of the following statements about broadcast variables is correct?

Options:

A.

broadcast variable in everyTasksave a copy

B.

broadcast variable in eachExecutorsave a copy

C.

Broadcast variables are read-only

D.

broadcast variable viaSparkContext.broadcast() method to generate

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Questions 29

HDFSThere is a file in the cluster and directorytext.txt, which of the following commands can find theDatNodeFestival

point information?

Options:

A.

hdfs fsck /test.txt–files

B.

hdfs fsck /text.txt–locations

C.

hdfs fsck /test.txt–blocks

D.

hdfs fsck /test.txt–list–corruptfileblocks

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Questions 30

existHBaseIn table design, it is common to multiple businessesrowkey, what are the possible countermeasures for situations that lead to data access contradictions?

slightly? (multiple choice)

Options:

A.

compromise method (rowkeyDesign takes into accountAandBbusiness needs)

B.

Redundancy method (use space for time factory efficiency)

C.

Create secondary index

D.

pre-scoreregion

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Questions 31

existStreamingin application development,BoltUse which of the following interfaces to sendTuple?

Options:

A.

to emit

B.

execute

C.

open

D.

nextTuple

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Questions 32

aboutFusonInsight HDofSpark, which of the following programming languages can be used to developSparkapplication? (multiple choice)

Options:

A.

C

B.

Scala

C.

Java

D.

Python

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Questions 33

Hadoopin the systemYARNassigned toContainerThe memory size, which can be passed through the parameter

yarn.app.mapreduce.am.resource.mb(yarn.nodemanager.resource.memory-mb) to set.

( )

Options:

A.

True

B.

False

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Questions 34

FusionInsigt HD the user wants to passHBase shelloperation to query aHBasein the table In this scenario, it is recommended that the administrator assign a machine account to this user.

Options:

A.

True

B.

False

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Questions 35

FusionInsight ManagerRegarding the management operations of services, which of the following statements is wrong?

Options:

A.

Can start, stop and restart the service

B.

Services can be added and uninstalled.

C.

Uncommon services can be set to hide or show

D.

Can view the current status of the service

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Questions 36

Fusionlnsigt HD one deployed inTomcatapplication on theHBaseservice, it is recommended to use in this scenario machine account.

Options:

A.

True

B.

False

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Questions 37

existFlumemiddle,sourceWhat is the main function of the function module?

Options:

A.

Get data and convert raw data into data objects that you process yourself

B.

Cache data and save data in memory or files according to different reliability policies

C.

Output data to the destination, support multiple output protocols

D.

Split the data and send the data to different destinations according to the characteristics of the data

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Questions 38

The user wants to develop an application to accessHBaseservice, first apply for a machine accounttester1, and give it sets accessHBaseservice permissions; then download the account'skeytabfile, and use that account to run the application

use. Subsequent applications of this application will increase business requirements and require access toHiveservice, then givingtester1User additionally granted access

askHiveAfter the component permissions, you need to re-download the user'skeytabdocument.

Options:

A.

True

B.

False

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Questions 39

existSparkmiddle,SparkSQLis an independent module that does not depend onSparkCorefinish independentlySQL

Statement parsing, optimization, and execution.

Options:

A.

True

B.

False

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Questions 40

Fusionlnsigt HD the user wants to passHBase shelloperation to query aHBaseThe contents of the table, this scenario is pushed down

It is recommended that the administrator assign a machine account to this user.

Options:

A.

True

B.

False

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Questions 41

FusionInsightHDin, aboutHivepartition (partition) function, which is wrong as described below?

Options:

A.

Partition fields are defined when the table is created

B.

There can only be one partition field, and multi-level partitions cannot be created

C.

Using partitions can reduce the data scan range of some queries, thereby improving query efficiency

D.

Partition fields can be used aswherecondition of the sentence

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Questions 42

FusionInsightHD which components are provided externallySQLor classSQLability?

(multiple choice)

Options:

A.

HBase

B.

Hive

C.

Spark

D.

Redis

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Questions 43

existSparkIn application development, which of the following codes can correctly count words?

Options:

A.

val counts=textFile.map(line=>line.split(" ')).map(-rd=>(word,1)).reduceByKey(_+_)

B.

val counts=textFile.flatMap(line=>line.split(" ")).map(word=>(word,1)).reduceByKey(_+_)

C.

val counts=textFile.map(line=>line.split(" ")).map(word=>(word,1)).groupByKey()

D.

val counts=textFile.flatmap(line=>line.split(" ")).map(-rd=>(word,1)).reduceByKey()

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Questions 44

FusionInsight HDWhat are the supported ways to submitOozieOperation? (multiple choice)

Options:

A.

ShellOrder

B.

Java API

C.

Hue UI

D.

Rest API

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Questions 45

FusionInsight HDofHiveIn the application, there are the following scenarios: ? ? ? Is there a higher storage file? ? efficiency, and most

Minute? ? Only a part of the letter is involved in the file, this scenario is suitable for using a column file (ORC F??)storage.

Options:

A.

True

B.

False

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Questions 46

Which of the following options isYamcore functionality?

Options:

A.

storage

B.

Resource management

C.

search

D.

data transmission

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Questions 47

when aMapReduceWhen the application is executed, which of the following actions ismapoccurred before the stage?

Options:

A.

split

B.

combine

C.

partition

D.

sort

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Questions 48

passing throughFusionindight ManagerWhen the interface creates a user, you want the user to have access to allTopichave

Read and write permissions, but not createTopicpermissions should be addedkafkaWhich group of services?

Options:

A.

KafkaadminGroup

B.

KakfaGroup

C.

kafkasuperuserGroup

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Questions 49

existFusionInsight HDclient, executeskinit{account}command is to getKDCwhich content?

Options:

A.

Krb5.conf

B.

TGT

C.

ST

D.

jaas.conf

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Questions 50

existFlumemiddle,sourceWhat is the main function of the function module?

Options:

A.

Get data and convert raw data into data objects that you process yourself

B.

Cache data and save data in memory or files according to different reliability policies

C.

Output data to the destination, support multiple output protocols

D.

Split the data and send the data to different destinations according to the characteristics of the data

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Questions 51

Fusioninsight HDofhiveIn the application, there are the following scenarios: high compression efficiency for data storage files

rate, and most queries involve only a subset of fields in the file. This scenario is suitable for using columnar files (ORC File)

storage

Options:

A.

True

B.

False

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Questions 52

HDFSRuntime,NameNodewill load the entire metadata of the file system from disk into memory, so the file system

The total number of files that can be stored is limited byNameNodememory capacity.

Options:

A.

True

B.

False

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Questions 53

FusionInsight HDmiddle,StreamingPackaging tools are used tojarpackages and other dependencies jarpackage, etc., typed into a completeStreamingAppliedjarBag

Options:

A.

True

B.

False

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Questions 54

Oozieofworkflow.xmlfile is the workflow configuration file

Options:

A.

True

B.

False

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Questions 55

existSparkIn application development, which of the following codes can correctly count words?

Options:

A.

val counts=textFile.map(line=>line.split(" ')).map(-rd=>(word,1)).reduceByKey(_+_)

B.

val counts=textFile.flatMap(line=>line.split(" ")).map(word=>(word,1)).reduceByKey(_+_)

C.

val counts=textFile.map(line=>line.split(" ")).map(word=>(word,1)).groupByKey()

D.

val counts=textFile.flatmap(line=>line.split(" ")).map(-rd=>(word,1)).reduceByKey()

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Questions 56

HDFS"Write once, read many"__________File access model. Therefore, it is recommended that a document

Options:

A.

After creating,

B.

writing and closing,

C.

do not modify it again.

D.

right or wrong

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Questions 57

RDDasSparkmost__________The core object has which of the following characteristics? (multiple choice)

Options:

A.

read only

B.

partition

C.

fault tolerance

D.

efficient

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Questions 58

when aMapReduceWhen the application is executed, which of the following actions ismapoccurs before the stage of?

Options:

A.

Split

B.

combine

C.

partition

D.

sort

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Questions 59

HDFSThere is a file in the cluster root directorytest, which of the following commands can find the file stored in ofDataNodeNode information?

Options:

A.

hdfs fsck/test.txt-files

B.

hdfs fsck/test.txt-locations

C.

hdfs fsck/test.txt-blocks

D.

hdfs fsck/test.txt-list-corruptfileblocks

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Questions 60

RedisofLISTData structure (multiple choice) Which scenarios?

Options:

A.

Build queuing systems, such as message queues

B.

uniq operations, such as getting the ranking value of all data in a certain period of time

C.

Get the latest N data operations: For example, for a Weibo, get the latest 10 comments,

D.

Simulate stack operations

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Questions 61

fusioninsight, an application to chargeKerberosSecurity certification, which of the following options are

must be used? (multiple choice)

Options:

A.

krb5.confconfiguration file

B.

existFusionInsight ManagerUser account applied on

C.

user accountkeytabdocument

D.

jaas.confconfiguration file

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Questions 62

FusionInsight HDWhich of the following belong toOozieofMapReduce Actionconfiguration item? (multiple choice)

Options:

A.

name-node

B.

source (HDFSofAction)

C.

mapred.mapper.class

D.

job-tracker

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Questions 63

FusionInsight HDWhich components in the platform support table and column encryption?

(multiple choice)

Options:

A.

HDFS

B.

HBase

C.

Hive

D.

Flink

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Questions 64

SparkandHadoopNeither is suitable for iterative calculation scenarios.

Options:

A.

True

B.

False

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Questions 65

Tonganeng's societyHDofe, user-definedUDFcan andHmachine built-inUDFclass name,

In this case, the user-definedUDF.

Options:

A.

True

B.

False

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Questions 66

There are the following business scenarios: User online log files have been stored inHDFSabove, the log file content format the formula is: each online record has three fields, namely name, gender, and online time, and the fields are separated by ",";

It is required to print out all female netizens who spend more than two hours online. Which of the following code snippets can achieve

The above business scenario? (multiple choice)

Options:

A.

sc.textFile("/data/file/path”).map(.split(",")).map(p=>FemaleInfo(p

(O),p(1),p(2).trim.toInt)).toDF.registerTemp Table("FemaleinfoTable”)sqlContext.sql

("select name,sum(stay Time)as stay Time from FemaleInfoTable where gender=

female'group by name”).filter("stay Time >=120”).collect).foreach(printin)

B.

sc.textFile("/data/file/path").map(.split(",")).map(p=>FemaleInfo

(p(O),p(1),p(2).trim.toInt)).toDF.registerTemp Table("Female infoTable")

sqlContext.sq(l "select name, sum(stay Time)as stay Time from FemaleInfoTable where

gender=female).filter(“stay Time >=120”).collect).foreach(printin)

C.

val text=sc.textFile("/data/fle/path")

val data=text.filter(_.contains("female"))

Val fermaleData:RDD(String,Int) =data.map{line=>val t=line.split(',')

(t(0),t(2).toInt)

}.reduceByKey(_+_)

Val result=femaleData.filter(line=>line.2>120)

Rusult.collect.map(x=>x._1 + ',' + x._2).foreach(println)

D.

val text=sc.textFile("/data/fle/path”)

val data=text.filter(_.contains("female”))

Val fermaleData:RDD(String,Int) =data.map(line=>val t=line.split(',')

(t(0),t(2).toInt)

}

Val result=femaleData.filter(line=>line.2>120)

Rusult.collect.map(x=>x._1 +','+ x._2).foreach(println)

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Questions 67

Which of the following is notHBaseThe roles or services involved in the read data process? (Writing isHMaster)

Options:

A.

ZooKeeper

B.

HDFS

C.

HMaster

D.

RegionServer

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Questions 68

scountryonnsgtHDWhen developing applications with a secure version, you can usekeytabfile forKerberosinstall

Fully certified.

Options:

A.

True

B.

False

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Questions 69

HiveWhich of the following scenarios does not apply to?

Options:

A.

Real-time online data analysis.

B.

Data mining, such as user behavior analysis, interest division, regional display.

C.

Data summary, such as daily and weekly user clicks, click ranking.

D.

Non-real-time analysis, such as log analysis, statistical analysis.

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Questions 70

FusionInsight HDin the system,SolrExample projectsolr-examplelconfsolr-example.properties middleZK URLandZOOKEEPER DEFAULT SERVER PRINCIPALThe value of can be selected from which of the following options Obtain?

Options:

A.

fromSolr Admin UIinterface acquisition

B.

existsolr-examplelconf solr-example.properties, already with these two parameters by default

C.

fromFusionInsight Manager SolrGet the service configuration interface

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Questions 71

FusionInsight HD which components are provided externallySQLor classSQLability? (multiple choice)

Options:

A.

HBase

B.

Hive

C.

Spark

D.

Redis

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Questions 72

existFusionInsight HDproduct,KafkaWhat is the role name of the service?

Options:

A.

Producer

B.

Broker

C.

Consumer

D.

ZooKeeper

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Questions 73

TowardsHBaseincrease in the clusterRegionServerhost, the original cluster must be stopped first, becauseHBase

Dynamic expansion is not supported.

Options:

A.

True

B.

False

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Questions 74

FusionInsight HDin, belonging toStreamingWhat are the methods of data distribution?

(multiple choice)

Options:

A.

mouthShuffle Groupingrandom grouping

B.

mouthField Groupingfield grouping

C.

mouthLocal Groupinglocal grouping

D.

mouthDirect Groupingdirect grouping

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Questions 75

solris a high-performance, basedLucenefull-text search service.SolrxrightLuceneto expand,

Loss of fruit supportSolrCloudmodel.

Options:

A.

True

B.

False

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Questions 76

existFusionInsight HDclient, executeskinit{account number}command is to getKDCwhich of the item content?

Options:

A.

Krb5

B.

conf

C.

TGT

D.

jaas.conf

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Questions 77

HDFSRuntime,(NameNodeAt startup,)NameNodewill file system metadata from

The disk is all loaded into memory, so the total number of files that the file system can store is limited byNameNodeof memory

capacity.

Options:

A.

True

B.

False

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Exam Code: H13-723_V2.0
Exam Name: HCIP-Big Data Developer V2.0
Last Update: Mar 28, 2024
Questions: 526

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