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Huawei H13-723_V2.0 Exam Syllabus Topics:

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

1. existSparkmiddle,SparkSQLis an independent module that does not depend onSparkCoretstandtasQaon.eaR.
operation, etc.

A) True
B) False

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

A) sort
B) split
C) partition
D) combine

3. 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 .

4. HDFSRuntime,NameNodewill load all the metadata of the file system from disk into memory, so the file system can The total number of files stored is limited byNameNodememory capacity.

A) True
B) False

5. existSpark, assuminglinesIs anDStreamobject,filterStatements can be filtered out80%the number of According to the following two sentences, the law is correct:X:lines.filter( ).groupByKey(.)Y:
lines.groupByKey( ).filter( )

A) Uncertainty about the performance difference between X and Y
B) X is more performant than Y
C) X and Y are the same as performance
D) X is less performant than Y

Solutions: