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Huawei H13-723_V2.0 - HCIP-Big Data Developer V2.0

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Total 526 questions

FusionInsight HDofStreamingforZooKeeperweak dependency, even ifZooKeeperFault

StreamingServices can also be provided as normal.

A.

True

B.

False

existSpark, assuminglinesIs anDStreamobject,filterStatements can be filtered out80%the number of

According to the following two sentences, the law is correct:X:lines.filter( ).groupByKey(.)Y:

lines.groupByKey( ).filter( )

A.

X is more performant than Y

B.

X is less performant than Y

C.

X and Y are the same as performance

D.

Uncertainty about the performance difference between X and Y

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

(multiple choice)

A.

Active and standbyNameNodeThe disk space where the metadata is located is insufficient.

B.

The number of missing blocks on the port exceeds the threshold.

C.

The missing copies of the port exceed the threshold.

D.

The corrupted copy exceeds the threshold.

RedisofLISTData structure, suitable for which of the following scenarios? (multiple choice)

A.

Build queuing systems, such as message queues

B.

Port 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, get the latest 10 comments on a Weibo

D.

simulating stack operations

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

Dynamic expansion is not supported.

A.

True

B.

False

YarmWhich role is to manage individual node resources (CPU/Memory)of?

A.

NodeManager

B.

ResourceManager

C.

DataNode

D.

NameNode

Fusioninsight HDin useStreamingofA, CKWhich of the following statements is true

of? (multiple choice)

A.

enabledAckerLater,StreamingIt will identify the failure to sendTupleAnd automatically resend, no need for human intervention pre.

B.

AckerThe message that will identify the processing timeout or processing failure isfail.

C.

fromspoutstarted, formedTupleFailure of any link in the tree will mark the entire tree as failed.

D.

The application needs to be inspoutoffail() interface method to implement message resend logic.

FusionInsigt HD one deployed inTomcatapplication on theHBaseservice, this

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

A.

True

B.

False

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

A.

emit (issue)

B.

execute

C.

open

D.

nextTuple

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

A.

split

B.

combine

C.

partition

D.

sort

FusionInsight HDmiddle,LoaderThe sequence of transformation steps for a job is input, transformation, and output.

A.

True

B.

False

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

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

Which of the following components must depend onZooKeeperto run()?

(multiple choice)

A.

HDFS

B.

HBase

C.

Spark

D.

YARN(streaming)

Below aboutZKFCThe statement is wrong ().

A.

zKFC(ZKFalovercontroler)as aZoKeeperCluster client for monitoringNameNode

status information.

B.

zkFCprocess hopeNameNodenode andZoKeeperofLeaderdeployed in the node.

//(ZKFCProcess is only deployingNameNodeexists in the node)

standbyameodepassZokceperKnow moreAcibe Nameodestate, onceAeametoesmachine,Standby

C.

NameNodeThe primary operation will be performed.

D.

HdFSNameoofCConnected to2Ke4Pf, save the hostname and other information tozoKe-p%rmiddle

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

In this case, the user-definedUDF.

A.

True

B.

False