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Huawei HCIP-Big Data Developer V2.0 Sample Questions:

1. HDFSmiddleNameNodeUsed to store metadata for the file system.

A) True
B) False

2. existSpark, assuminglinesIs anDStreamobject, which of the following statements can periodically count this number of words on a stream?

A) lines.flatMap(_.split(" ")).flatmap(word =>(word,1)).groupByKey(_+_).print ( )
B) lines.flatMap(_.split(" ")).map(word =>(word,word.length())).reduceByKey (_+_).print( )
C) lines.flatMap(_.split(" ")).map(word =>(word,1)).reduce(_+_).print( )
D) lines.flatMap(_.split(" ")).map(word =>(word,1)).reduceByKey(_+_).print ( )

3. FusionInsight HDsystem, aboutHiveWhich of the provided file formats is not a columnar file?

A) CRC
B) RCFile
C) Parquet
D) TextFile

4. existSolrIn the application query scenario of the
Page. Which of the following statements about cursors is correct?
(multiple choice)

A) When querying, the request cannot containstartparameter
B) For the first query request, you need to specify query parameters. The operation method is as follows:solrquery.set (CursorMarkParams.CURSOR_MARK_PARAM,CursorMarkParams.CURSOR_MARK_ START);
C) The query field must be sorteduniqueKeySort by field
D) SorlThe return result will havenextCursorMark, on the next call use this value ascursorMark

5. which come downRedisIs the command an atomic operation?

A) All of the above
B) UURH(MRnpuhoperate)
C) INCR(aThe stored digital value is incremented by one)(DECR)
D) HOY(eesurfacekeydomain infieldvalue plus incrementincrement)

Solutions: