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Viewing page 2 out of 11 pages
Viewing questions 16-30 out of questions
Questions # 16:

Which of the following methods can generateDStreamobject?

Options:

A.

KafkaUtils.createStream(…)

B.

KafkaUtils.createDirectStream(…)

C.

StreamingContext.socketStream

D.

StreamingContext.fileStream(…)

Questions # 17:

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

Questions # 18:

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

Questions # 19:

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.

Questions # 20:

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

Questions # 21:

existSpark, assuminglinesIs anDStreamobject,filterStatements can be filtered out80%data for the following two

The correct statement is:

X: lines.filter(…).groupByKey(…)

Y: lines.groupByKey(…).filter(…)

Options:

A.

XCompareYhigher performance

B.

XCompareYlower performance

C.

XandYsame as performance

D.

UncertaintyXandYdifference in performance

Questions # 22:

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

Options:

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.

Questions # 23:

RDDasSparkThe core object, which has the following characteristics? (multiple choice)

Options:

A.

read only

B.

partition

C.

fault tolerance

D.

efficient

Questions # 24:

FusionInsight HD in which ways can you viewOozieDebug results of the job? (multiple choice)

Options:

A.

CheckOozieofJava APIWhether the returned result is as expected

B.

pass throughHueofworkflowDashboard to view program running results

C.

pass throughHue's file browser to see ifHDFSThe specified directory produces the expected file

D.

Oozieself-containedWebThe interface can also view the job execution results

Questions # 25:

existSpark, the accumulator can realize high-speed parallel counter and variable summation; inSparkduring application development,

only inDriverGet the value of this counter on .

Options:

A.

True

B.

False

Questions # 26:

FusionInsight HDin useStreamingofA, CKWhich of the following statements is true? (multiple choice)

Options:

A.

enabledAckerLater,StreamingIt will identify the failure to sendTupleAnd automatically resend without human intervention.

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.

Questions # 27:

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

Options:

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

Questions # 28:

When a task is submitted toYARNIn the cluster, which of the following options will generate ajob id?

Options:

A.

ResourceManager

B.

Contaioner

C.

AppMaster

D.

NodeManager

Questions # 29:

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

Options:

A.

Krb5.conf

B.

TGT

C.

ST

D.

jaas.conf

Questions # 30:

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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Viewing questions 16-30 out of questions
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