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

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Total 526 questions

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

A.

True

B.

False

aboutFlumeThe characteristics of the collected data, which of the following descriptions are correct?

A.

Supports distributed and streaming acquisition

B.

with the help ofMapReducetask parallel collection

C.

Only structured data can be collected

D.

Trigger data collection with external timing tasks

forN(N>1) copies of stored documents,HDFSThe client initiates a read file request. If the read replica node fails, the

If the connection fails, it will not go to other replica nodes for reading.

A.

True

B.

False

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

A.

Streaming data monitoring

B.

Real-time visit statistics of the website

C.

Offline log analysis

D.

Traffic flow analysis

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

A.

split

B.

combine

C.

partition

D.

sort

FusionInsight HDofHiveIn the application, there are the following scenarios:? ? ?Storage files have higher? ?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.

A.

True

B.

False

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

A.

True

B.

False

existFusionInsight HD where can I viewMapReduceThe result of running the application?

A.

FusionInsight Managerofwebinterface

B.

Loader Webinterface

C.

Solr webinterface

D.

Yarn Webinterface

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)

A.

hive.exec.compress.intermediate

B.

hive.intermediate.compression.codec

C.

hive.exec.compress.output

twenty three

D.

hive.intermediate.compression.type

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?

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 .

Fusionlnsiht HDmiddle,Oozieclient'sJava APIwill be called when the task is runOozieClientWhich method of the class?

A.

suspend

B.

getJoblnfo

C.

submit

D.

run

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

A.

Build queuing systems, such as message queues

B.

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

C.

get latestNdata operations: for example, for a certain microblog, get the latest10comments

D.

Simulate stack operations

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 exceeds the threshold.

C.

Lost replicas exceed the threshold.

D.

The corrupted replica exceeds the threshold.

FusionInsight HDin, useStreamingThe command?way to submitexample.jarmiddleom huawei example.

WrodCounttask, task name iswcTeat, is the following execution command correct?

A.

storm jar example jar wcTest om huawei example WordCount

B.

storm jar example jar wcTest WrodCount

C.

storm jar example jar om huawei example WordCount wcTest

D.

storm jar example jar WorkCount wcTest

Which of the following measures can improveHBasequery performance? (multiple choice)

A.

pre-scoreregion,MakeregionEvenly distributed, improve concurrency

B.

Query frequent attributes are placed inrowkeyThe front part

C.

Use secondary indexes to adapt to more query scenarios

D.

Data read at the same time are stored in the samecellmiddle