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H13-723_V2.0 Exam Dumps - HCIP-Big Data Developer V2.0

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Question # 49

aboutKafkaThe characteristics of the following description are correct? (multiple choice)

A.

KafkaIt is a high-throughput, distributed, publish-subscribe-based messaging system

B.

KafkaPersistence of messages

C.

KafkaApplicable to offline and online message consumption scenarios

D.

Kafkaguarantee eachPartitionmessages in order

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Question # 50

Below aboutZooKeeperThe statement is wrong ().

A.

If ZooKeeperIf there is an interruption in the process of synchronizing the message, after the failure is recovered, the transmission status before the failure can be adjusted according to the the state continues to synchronize, that is, support for resuming transmission from a breakpoint.

B.

ZooKeeperUse a custom atomic message protocol to ensure the consistency of node data in the entire system.

C.

ZooKeeperThe cluster is elected at startupLeaderRole.

D.

LeaderAfter a node receives a data change request, it first writes to disk and then writes to memory.

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Question # 51

HDFSIt adopts a "write once, read many" file access model. Therefore, it is recommended that a document

After creating and writing the profit, do not modify it again.

A.

True

B.

False

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Question # 52

For multiple business sharingrowkey, What are the countermeasures for situations that lead to conflicting data access?

(multiple choice)

A.

Mouth compromise (rowkeyDesign takes into accountAandBbusiness needs)

B.

Port redundancy method (exchange space for time/effectiveness)

C.

Create a secondary index

D.

mouth pre-scoreregion

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Question # 53

Does a project require Internet access to a certain area? ? Save and search the full text of these Internet records? ? information, with

to prevent crime in the region.

In this scenario, which of the following options is the best?

A.

existSolrCreate an index and save the data, and return all the data during full-text search.

B.

existHBasestore data on theHBaseThe filtering characteristics of , satisfy fuzzy matching query.

C.

When storing data, inSolrindex on theHBaseStore complete data? ? when, throughSolrFull-text search to obtain and record

record key information, through the key information inHBasefor the full record.

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Question # 54

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

(multiple choice)

A.

JDB, C

B.

spark-beeline

C.

spark-sql

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Question # 55

existFusionInsight HDmiddle,SparkBy defaultYARNAs a cluster resource management system.

A.

True

B.

False

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Question # 56

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

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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