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H13-723_V2.0 Sample Questions Answers

Questions 4

Oozieofworkflow.xmlfile is the workflow configuration file

Options:

A.

True

B.

False

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Questions 5

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 6

existHadoopAmong the open source big data platforms, which are distributed storage components? (multiple choice)

Options:

A.

MapReduce

B.

SparkF

C.

HDFS

D.

HBase

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Questions 7

Which of the following causesHDFSofNameNodeEntersafemode(safe read-only mode)?

(multiple choice)

Options:

A.

Active and standbyNameNodeof metadata is running out of disk space.

B.

The number of missing blocks exceeds the threshold.

C.

Lost replicas exceed the threshold.

D.

The corrupted copy exceeds the threshold.

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Questions 8

In ThereNnodesFusionInsightHDDeploy in a clusterHBase, it is recommended to deploy()HMaster process, ( )RegionServerprocess?

Options:

A.

2, 2

B.

3, N

C.

2, N

D.

N, N

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Questions 9

FlinkusecheckpointThe mechanism guarantees fault tolerance in the operation of the application.

Options:

A.

True

B.

False

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Questions 10

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 11

existHBaseWhich of the following interfaces or classes does not need to be involved in the implementation of business logic for writing data?

Options:

A.

Put

B.

HTable

C.

HBaseAdmin

D.

PutList

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Questions 12

Which of the following scenarios is notflinkWhat does the component excel at()?

(multiple choice)

Options:

A.

Batch Iterative

B.

Computing Stream

C.

Processing

D.

Data Storage

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Questions 13

FusionInsight HDin useStreamingofA, CKWhich of the following statements is true

of? (multiple choice)

Options:

A.

After enabling Acker, Streaming will identify the failed Tuple and automatically resend it without human intervention pre.

B.

Acker will identify the processing timeout or processing failed messages as fail.

C.

Starting from the spout, failure of any link in the formed tuple tree will mark the entire tree as failure.

D.

The application needs to implement the message resend logic in the fail) interface method of spout.

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Questions 14

aboutHiveandHadoopThe relationship of other components, the following description is wrong?

Options:

A.

Hivefinally store the data inHDFSmiddle

B.

HQLable to passMapReduceperform tasks

C.

HiveYesHadoopThe platform's data warehouse tools

D.

HiverightHBasehave strong dependencies

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Questions 15

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 16

FusionInsight HDsystem, aboutHiveWhich of the provided file formats is not a columnar file?

Options:

A.

CRC

B.

Parquet

C.

RCFile

D.

TextFile

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Questions 17

FusionInsight HDmiddle,HiveWhich of the following parameters of the client is used to controlreduceConcurrency? (multiple choice)

Options:

A.

hive.exec.reducers.bytes.per.reducer

B.

hive.exec-ducers.max

C.

hive.exec.max.dynamic.partitions

D.

hive.exec.max.dynamic.partitions.pernode

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Questions 18

FusionInsight HDin, belonging toStreamingWhat are the roles of the service? (multiple choice)

Options:

A.

Nimbus

B.

Supervisor

C.

Broker

D.

quorumpeer

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Questions 19

in aMapReduceapplication,mapThe output of the function is viaMapReduce? ?After processing, send toreduceletter

number. This process belongs to? ?Sort and group pairs.

Options:

A.

True

B.

False

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Questions 20

aboutFusionInsight HDplatformHiveservice, itsWebHCatDevelopment interface, which of the following descriptions is incorrect?

Options:

A.

Support based onRESTquery request

B.

WebHCatThe return data format isSML

C.

WebHCatbased onHTTPandHTTPSAgreement to provide services to the outside world

D.

able to passWebHCatCreate tables, query, etc.

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Questions 21

Which of the following is notMapReducespecialty?

Options:

A.

easy to program

B.

good scalability

C.

real-time computing

D.

High fault tolerance

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Questions 22

pass throughHBaseofcreateTableThe method creates a table, what parameters must be passed in?

Options:

A.

Table Name

B.

table names and columns

C.

Table names and column families

D.

can be empty

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Questions 23

FusionInsight HDin, aboutHive UFDSecondary development, is the following description correct? (multiple choice)

Options:

A.

user definedUDFBefore being used, it needs to beHivecreate this in the systemUDonly

B.

user definedUDF, information such as summary and status is not allowed.

C.

user definedUDF, can be added according to the actual situationdeterministicandstatefulletc. Notes.

D.

Under the secure cluster, user-definedUDF, it is recommended to create it once before each use.

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Questions 24

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 25

existHBaseWhich of the following interfaces or classes does not need to be involved in the implementation of business logic for writing data?

Options:

A.

Put

B.

HTable

C.

HBaseAdmin

D.

PutList

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Questions 26

for running onMapReduceThe application on the platform that this application depends onjarWhere will the bag be placed?

Options:

A.

HIVE

B.

HBASE

C.

HDFS

D.

DB

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Questions 27

HiveWhich of the following table types are supported? (multiple choice)

Options:

A.

Partition Table

B.

bucket table

C.

Tilt table

D.

partition+bucket table

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Questions 28

.existFusionInsight HDin, useSparkSQL, which of the following methods (or tools) can be used to performSQLstatement?

(multiple choice)

Options:

A.

JDB, C

B.

spark-beeline

C.

spark-sql

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Questions 29

useFusionInsight HDofHiveQuery data, when the amount of data in the intermediate results of the query is large, you can choose to compress the intermediate data

Structured data for better performance.

Which of the following areHiveRelevant parameters for intermediate result compression? (multiple choice)

Options:

A.

hive.exec.compress.intermediate

B.

hive.intermediate.compression.codec

C.

hive.exec.compress.output

twenty three

D.

hive.intermediate.compression.type

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Questions 30

MapReduceIn which of the following is the task ultimately performed?

Options:

A.

NodeManager

B.

container

C.

ResourceManager

D.

AppMaster

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Questions 31

aboutStreamingdisaster recovery capability, which of the following statements is correct? (multiple choice)

Options:

A.

SupervisorAfter the process exits, it can beNimbusAutomatically identify and pull up without affecting running business.

B.

WorkerCan be used after abnormal exitSupervisorPulls up automatically without manual intervention.

C.

When a node fails, the tasks on the node will be reassigned to other normal nodes without manual intervention.

D.

NimbusAfter the failure, the backupNimbusIt will take over automatically without affecting the running business.

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Questions 32

FusionInsight HD a completeStreaming CQLWhich of the following parts does the application contain at least? (multiple choice)

Options:

A.

Create an input stream

B.

Create output stream

C.

Business action statements (such asSELECT,INSERT,JIONWait)

D.

Apply commit statement

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Questions 33

Oozieofworkflow.xmlfile is the workflow configuration file

Options:

A.

True

B.

False

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Questions 34

set the block storage size to128M,HDFSWhen the client is writing a file, when writing a100M

How much storage space does a file of this size actually occupy?

Options:

A.

128M

B.

100M

C.

64M

D.

50M

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Questions 35

HDFSIn application development of , which of the following areHDFSInterfaces supported by the service? (multiple choice)

Options:

A.

BufferedOutputStream.write

B.

BufferedOutputStream.flush

C.

FileSystem.create

D.

FileSystem.append

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Questions 36

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

will use user-definedUDF.

Options:

A.

True

B.

False

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Questions 37

FusionInsight HDsystem, aboutHiveWhich of the provided file formats is not a columnar file?

Options:

A.

CRC

B.

Parquet

C.

RCFile

D.

TextFile

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Questions 38

FusionInsight HDin, aboutOozieWhich of the following descriptions is correct? (multiple choice)

Options:

A.

submitcommand to change the status of the job toPREP

B.

startcommand allowsPREPThe status of the job changes toRUNNING

C.

runcommand to change the job status toRUNNING

D.

killCommands can act onPREP/SUSPEND/RUNNINGstatus job

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Questions 39

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 40

existFusionInsight HDin, useSparkSQL, which of the following methods (or tools) can be used to performSQLstatement?

(multiple choice)

Options:

A.

JDB, C

B.

spark-beeline

C.

spark-sql

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Questions 41

Spark Streamingavailable fromKafkaReceive data and perform calculations, and the calculation results can only be stored inHDFS, can no longer be written backKafka.

Options:

A.

True

B.

False

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Questions 42

When the cluster is normal,RedisClient initiates oncegetCall, the client has () times of message interaction with the server?

Options:

A.

1

B.

2

C.

3

D.

4

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Questions 43

FusionInsight HDmiddle,OozieBefore submitting the job, you need to upload the configuration files andjarpackage toHDFS

Options:

A.

True

B.

False

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Questions 44

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 45

Suppose there is an application with10Tables, each table has tens of millions of records, and the number of fields is about20indivual.

Currently usingRedisto cache this10The data of a table, the design of its data structure, which of the following is the best design?

Options:

A.

usehashstructure, and a table uses ahash key, a row in the table records forhash keyone offield.

B.

usehashstructure, each row record of each table uses onehash key,hash keyoffieldThe fields of the corresponding table records,

and designKEYEach table adds a different prefix to distinguish it.

C.

usestringstructure, each field of each row record of each table uses oneKEY.

D.

usestringstructure, each row record of each table uses oneKEY,valueAll fields recorded for a row in a table? ? back

value of .

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Questions 46

Fusion Insight HDmiddle,StreamingWhich of the following scenarios is applicable? (multiple choice)

Options:

A.

Streaming data monitoring

B.

Real-time visit statistics of the website

C.

Offline log analysis

D.

Traffic flow analysis

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Questions 47

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 48

about the followingHDFSWhat is the correct process for the client to read the file? (multiple choice)

Options:

A.

priority from the nearestDataNodeDownload data.

B.

file data fromDataNodeback toNameNode, then fromNameNodeDown to the client.

C.

If the client and the connectedDataNodeIf there is a failure in reading, then the client will give up the applause node and connect the node where other replicas are located.

D.

Supports multiple clients fromDataNoderead the same file data.

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Questions 49

FusionInsight HDin, belonging toStreamingWhat are the methods of data distribution? (multiple choice)

Options:

A.

Shuffle Grouping

B.

Field Grouping

C.

Local Grouping

D.

Direct Grouping

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Questions 50

TowardsHBaseincrease in the clusterRegionServerhost, the original cluster must be stopped first, becauseHBaseDynamic expansion is not supported.

Options:

A.

True

B.

False

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Questions 51

Flumesupport real-time data collectionsourceWhich is the type?

Options:

A.

taildir

B.

Log4j

C.

JMS

D.

Thrift

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Questions 52

existMapReduceIn application development of , which of the followingJAVA, Class responsible for managing and running a computational task?

Options:

A.

lob

B.

Context

C.

FileSystem

D.

Configuration

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Questions 53

Fusionlnsigt HDofHiveWhat distributed computing frameworks can components run on? (multiple choice)

Options:

A.

Spark

B.

Streaming

C.

MapReduce

D.

HDFS

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Questions 54

FusionInsight HDsystem, aboutHiveofJDB, CInterface type, which of the following descriptions is correct of?

Options:

A.

In a network isolation environment,ZooKeeperofIPCan be configured as a businessIP, can also be configured to manageIP.

B.

hiveUnlike traditional databases, soJDB, CThe established connection does not need to be closed.

C.

In a secure cluster environment, establish andHiveBefore connecting, you need to use unified authentication to log in.

D.

useJDB, CsubmitSQL, you canSQLPut a semicolon after the statement";"

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Questions 55

HBasetablerowkeyDesign is a very important development and design link. Suppose there is the following scenario,

The most frequent query scenario is to query the historical call records of each month and half a year based on the mobile phone number. Which of the followingrowkey

Design is optimal?

Options:

A.

name ten mobile number

B.

date ten phone number

C.

Phone number+date

D.

Phone number+Name

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Questions 56

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 57

FusionInsight HDofLoader, a connector can only be assigned to one job.

Options:

A.

True

B.

False

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Questions 58

Fasionlrnight HD Heenein the group,Table1GenusFNamespacel,Table2GenusFNamespace2,

Table1there are two1columns, respectivelyRdf11.df12,TablezThere is a column home namedf21, then which of the following

user account9AAt the same time have|ef18d21oftwrite rights. (multiple choice)

Options:

A.

Give this user accountglobelread permission

B.

Give this user accountNamespace1read and write permissions

C.

Give this user accountTable1andTable2read and write permissions

D.

Give wave user accountNamespace1andNamespace2read and write permissions,

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Questions 59

existMapReduceIn application development of , which of the followingJAVAThe class is responsible for managing and running a

Counting tasks?

Options:

A.

Job

B.

Context

C.

FileSystem

D.

Configuration

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Questions 60

existSolrWhen indexing, which of the following code snippets can significantly improve indexing performance? (multiple choice)

Options:

A.

IbClient.setRequestWriter(new BinaryRequestWriter())

B.

if(updateRequest.getDocumentsMap(O.size( )>= 10000)cloudSolClient.request

(updateRequest,collName);updateRequest.clear();}

C.

if(updateRequest.getDocuments( ).size( )>= 1000){

cloudSolrClient.request(updateRequest,collName);updateRequest.clear();}

D.

SolrInputDocument doc = new SolrInputDocument();doc.addField("id",i.toString

());doc.addField("name", "Zhang San"+ i);doc.addField("features","test"+ i);doc.addField

("price", (float)i*1.01);cloudSolrClient.add(doc);cloudSolrClient.commit();

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Questions 61

existStreamingin application development,BoltThe class uses which of the following interfaces to sendTuple?

Options:

A.

emit (issue)

B.

execute

C.

open

D.

nextTuple

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Questions 62

FusionInsigt HD one deployed inTomcatapplication on theHBaseservice, this

It is recommended to use a machine account in this scenario.

Options:

A.

True

B.

False

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Questions 63

Rcboft0system, abouteWhich of the provided file formats is not in column format?

Options:

A.

ORC(High-performance column store)

B.

Parquetcolumn store

C.

RCFileRow-column storage

D.

TextFile

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Questions 64

existSparkmiddle,SparkSQLis an independent module that does not depend onSparkCoretstandtasQaon.eaR. operation, etc.

Options:

A.

True

B.

False

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Questions 65

FusionInsight HDin, belonging toStreamingWhat are the roles of the service? (multiple choice)

Options:

A.

Nimbus

B.

Supervisor

C.

Broker

D.

quorumpeer

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Questions 66

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

Options:

A.

HBase

B.

Hive

C.

Spark

D.

Redis

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Questions 67

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

Fully certified.

Options:

A.

True

B.

False

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Questions 68

useFusionInsight HDofHiveQuery data, when the intermediate result of the query has a large amount of data.

You can choose to compress the network result data to obtain better performance. Which of the following areHiveCorrelation of intermediate result compression

parameter? (multiple choice)

Options:

A.

hive.exec.compress.intermediate

B.

hive.intermediate.compression.codec

C.

hive.exec.compress.output

D.

hive.intermediate.compression.type

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Questions 69

existSpark, which of the following is trueDataFrameThe operator that takes the intersection?

Options:

A.

filer(conditionExpr:String):DataFrameFilter data based on filter criteria

B.

Join(right:DataFrame,joinExprs:Column):DataFrameaccording to the specified expressionjoin

C.

intersect(other:DataFrame):DataFrameright2indivualdataframeTake the intersection

D.

dropDuplicates():DataFramedata deduplication

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Questions 70

existKafkain, aboutConsumerWhich statement is correct? (multiple choice)

Options:

A.

mouthConsumerMainly for data consumption

B.

mouthConsumerNeed to specify when consuming dataTopic

C.

multiple mouthsConsumerconfigure the samegroup.idwhen theseConsumerConsumed data will not be duplicated

D.

Kou XinConsumerAPIConsumption data does not need to be specifiedZooKeeperaddress

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Questions 71

An application requires simultaneous and twoFusionInsightCluster interaction: both need to access the cluster1ofHBase

Serve,Xneed to cut county2ofHiveservice, then which of the following operations is necessary? multiple choice)

Options:

A.

-Create the account required by this application on cluster 1, and set this account to access the HBase service of this cluster

B.

-Create an account with the same name in option A on cluster 2, and set this account to access the Hive service in this episode e

C.

Accounts created by the -A option and the B option must belong to supr.

D.

Cluster 1 and Cluster 2 complete the mutual trust operation

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Questions 72

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 73

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

become?

Options:

A.

Client

B.

ApplicationMaster

C.

Executor.

D.

Driver

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Questions 74

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 75

existFlumeDuring cascaded transfers, you can usefail overmode transfer, so that if the next hop isFlumenode failure or

When the data is received abnormally, it can automatically switch to another way to continue transmission.

Options:

A.

True

B.

False

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Questions 76

Below aboutZooKeeperThe description of the feature is wrong ()?

Options:

A.

Updates sent by the client are applied in the order in which they were sent.

B.

A message to be read by more than halfserverreceive, it will be able to successfully write to disk.

C.

Message updates can only succeed or fail, with no intermediate states.

D.

ZooKeeperThe number of nodes must be an odd number.

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Questions 77

Oozieofworkflow.xmlfile is the workflow configuration file

Options:

A.

True

B.

False

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Questions 78

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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Exam Code: H13-723_V2.0
Exam Name: HCIP-Big Data Developer V2.0
Last Update: Feb 21, 2024
Questions: 526
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