Huawei H13-723_V2.0認定試験問題集には370練習テスト問題があります
最新H13-723_V2.0試験問題集には高得点で一発合格
質問 98
aboutFusionInsight HDplatformHiveservice, itsWebHCatDevelopment interface, the following description does not the correct one is?
- A. Support based onRESTquery request
- B. Agreement to provide services to the outside world able to passWebHCatCreate tables, query, etc.
- C. WebHCatbased onHTTPandHTTPS
- D. WebHCatThe return data format isXML (Json)
正解: D
質問 99
pass throughHBaseofcreateTableThe method creates a table, what parameters must be passed in?
- A. Table names and column families
- B. table names and columns
- C. can be empty
- D. Table Name
正解: A
質問 100
HDFSofClientWhen writing to a file, the first copy of the data is written to the location specified byNameNodeSure, The other replicas are written to byDataNodeSure.
- A. False
- B. True
正解: A
質問 101
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 variable viaSparkContext.broadcast() method to generate
- D. Broadcast variables are read-only
正解: B,C,D
質問 102
coordinator.xmlis the configuration file responsible for scheduling the workflow
- A. True
- B. False
正解: A
質問 103
HDFSThere is a file in the cluster and directorytext.txt, which of the following commands can find theDatNodenode information?
- A. hdfs fsck /text.txt-locations
- B. hdfs fsck /test.txt-blocks
- C. hdfs fsck /test.txt-files
- D. hdfs fsck /test.txt-list-corruptfileblocks
正解: A
質問 104
Spark StreamingAs a micro-batch stream processing engine, it converts the data of each time slice into OneRDDa partition in the
- A. True
- B. False
正解: A
質問 105
existMapReduceIn the development framework,InputFormatWhat is the function of the class?
- A. mergemapThe result of the stage has the samekeyvalue key-value pair
- B. rightmapThe results of the stages are sorted and merged
- C. Split the input data into individualsplit, and willsplitfurther split into<key,value>yes, then asmapletter input of numbers
- D. put allmapThe results of the stages are merged to get the final result
正解: C
質問 106
aboutStreamingthe topology (Topology), which of the following descriptions is wrong?
- A. Topologywill run until it is explicitlykill
- B. OneTopologyis made up of a group ofSpoutcomponents andBoltcomponents passStream Groupingsconnected
- C. Business logic is encapsulated inTopologymiddle OneTopologyOnly one can be specified to startWorkerprocess
- D. Directed acyclic graph (DAG)
正解: C
質問 107
HBaseFilters can set column names or column values as filter conditions, and support the use of multiple filters at the same time.
- A. True
- B. False
正解: A
質問 108
existSpark, assuminglinesIs anDStreamObject, which of the following statements can periodically count the number of words on this stream?
- A. lines.flatMap(_.split??)).map(word=>(word,1)).reduce(_+_).print ( )
- B. lines.flatMap(_.split??)).flatmap(word=>(word,1)).groupByKey(_+_).print ( )
- C. lines.flatMap(_.split??)).map(word=>(word,1)).reduceByKey(_+_).print ( )
- D. lines.flatMap(_.split??)).map(word=>(word,word.length())).reduceByKey(_+_).print ( )
正解: C
質問 109
existSpark, the accumulator can realize high-speed parallel counter and variable summation; inSparkduring application development, only inDriverGet the value of this counter on .
- A. True
- B. False
正解: A
質問 110
Flumesupport real-time data collection source Which is the type?
Taildir Log4jJMSThrift 12.FusionInsight HDofHive, user-definedUDFcan andHiveBuilt-inUDFrepeat name, In this case, the user-definedUDF.
- A. False
- B. True
正解: A
質問 111
FusionInsight HD a completeStreaming CQLThe application contains at least which of the following part?
(multiple choice)
- A. Apply commit statement
- B. Business action statements (such asSELECT,INSERT,JIONWait)
- C. Create output stream
- D. Create an input stream
正解: A,B,C,D
質問 112
existFusionInsight HDmiddle,FlumeWhich of the following are supportedsourceTypes of? (multiple choice)
- A. Kafka
- B. Avro
- C. HBase
- D. HTTP
正解: A,B,D
質問 113
existHBaseWhich of the following interfaces or classes does not need to be involved in the implementation of business logic for writing data?
- A. Put
- B. HBaseAdmin
- C. PutList
- D. HTable
正解: B
質問 114
existFusionInsight HDin, aboutHivepartition (partition) function, which is wrong as described below?
- A. Partition fields are defined when the table is created
- B. Partition fields can be used aswherecondition of the sentence
- C. Using partitions can reduce the data scan range of some queries, thereby improving query efficiency
- D. There can only be one partition field, and multi-level partitions cannot be created
正解: D
質問 115
TowardsHBaseincrease in the clusterRegionServerhost, the original cluster must be stopped first, becauseHBaseDynamic expansion is not supported.
- A. False
- B. True
正解: A
質問 116
FusionInsight HDofStreamingforZooKeeperweak dependency, even ifZooKeeperFault StreamingServices can also be provided as normal.
- A. False
- B. True
正解: A
質問 117
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