Huawei H13-723_V2.0 問題集

質問 1：
FusionInsigt HD one deployed inTomcatapplication on theHBaseservice, this It is recommended to use a machine account in this scenario.
A. False
B. True
正解：A

質問 2：
There are the following business scenarios: User online log files have been stored inHDFSabove, the log file content format the formula is: each online record has three fields, namely name, gender, and online time, and the fields are separated by ","; It is required to print out all female netizens who spend more than two hours online. Which of the following code snippets can achieve The above business scenario? (multiple choice)
A. sc.textFile("/data/file/path").map(.split(",")).map(p=>FemaleInfo(p
(O),p(1),p(2).trim.toInt)).toDF.registerTemp Table("FemaleinfoTable")sqlContext.sql ("select name,sum(stay Time)as stay Time from FemaleInfoTable where gender= female'group by name").filter("stay Time >=120").collect).foreach(printin)
B. val text=sc.textFile("/data/fle/path")
val data=text.filter(_.contains("female"))
Val fermaleData:RDD(String,Int) =data.map(line=>val t=line.split(',')
(t(0),t(2).toInt)
}
Val result=femaleData.filter(line=>line.2>120)
Rusult.collect.map(x=>x._1 +','+ x._2).foreach(println)
C. sc.textFile("/data/file/path").map(.split(",")).map(p=>FemaleInfo
(p(O),p(1),p(2).trim.toInt)).toDF.registerTemp Table("Female infoTable") sqlContext.sq(l "select name, sum(stay Time)as stay Time from FemaleInfoTable where gender=female).filter("stay Time >=120").collect).foreach(printin)
D. val text=sc.textFile("/data/fle/path")
val data=text.filter(_.contains("female"))
Val fermaleData:RDD(String,Int) =data.map{line=>val t=line.split(',')
(t(0),t(2).toInt)
}.reduceByKey(_+_)
Val result=femaleData.filter(line=>line.2>120)
Rusult.collect.map(x=>x._1 + ',' + x._2).foreach(println)
正解：C,D

質問 3：
FusionInsight HD in real-time processing scenarios, what computing frameworks are available? (multiple choice)
A. MapReduce
B. Spark Streaming
C. HDFS
D. Streaming
正解：B,D

質問 4：
existFusionInsight HDmiddle,FlumeWhich of the following are supportedsourceTypes of? (multiple choice)
A. HTTP
B. Avro
C. Kafka
D. HBase
正解：A,B,C

質問 5：
FusionInsight HD assuming a topology that setsspoutConcurrency is3,bot1Concurrency is 2,bot2Concurrency is3,workerThe number is2,Sobol1ofexecutorexistworkerHow is it distributed?
A. no fixed rules
B. twoworkerone for each
C. twoworkerone of theworkerdistribute two
正解：B

質問 6：
RedisIn cluster mode, useJAVAWhich of the following is a best practice for application development?
A. useJedisobject connectionRedis Server,transferJedisofset.qetWaiting for business operation interface to process data operate.
B. useJedisPoolobject createdJedisObject pool, each business operation starts fromJedisPoolget one Jedisobject, then call,Jedisofset.getWait for the business operation interface to perform data operations.
C. useredisClusterobject connectionRedis Server,transferJedisClusterofset.getother business operations interface for data manipulation; in multithreaded applications, multiple threads share oneJedisClusterobject.
D. useJedisClusterobject connectionRedis Server,transferJedisClusterofset,getother business operations interfacet.
In multithreaded applications, each thread creates aJedisClusterobject.
正解：A

質問 7：
FusionInsight HDin, belonging toStreamingWhat is the nature of the data distribution method? (multiple choice)
A. Laal Gg
B. Direct Grouping
C. Field Grouping
D. Shuffle Grouping
正解：B,C,D

質問 8：
existKafka, as follows aboutProducerWhat is wrong with the statement of sending data? (multiple choice)
A. ProducerResponsible for production data,Consumerresponsible for consuming data,ProducerandConsumerneed to be established betweenSocket connect
B. Producerconnect any normalBrokerInstances can produce data
C. Producercan either send data toBroker, and can send data toConsumersuperior
D. ProducerAs a message producer, you can directly write data toZooKeeper
正解：A,C,D

質問 9：
Below aboutZKFCThe statement is wrong ().
A. zKFC(ZKFalovercontroler)as aZoKeeperCluster client for monitoringNameNode status information.
B. HdFSNameoofCConnected to2Ke4Pf, save the hostname and other information tozoKe-p%rmiddle
C. NameNodeThe primary operation will be performed.
D. zkFCprocess hopeNameNodenode andZoKeeperofLeaderdeployed in the node.
//(ZKFCProcess is only deployingNameNodeexists in the node)
standbyameodepassZokceperKnow moreAcibe Nameodestate, onceAeametoesmachine,Standby
正解：A