Huawei Other Certification H13-723_V2.0

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

1. existSpark, which of the following statements about broadcast variables is correct? (multiple choice)

A) broadcast variable in eachTasksave a copy
B) broadcast variable in eachExecutorsave a copy
C) Broadcast variables are read-only
D) broadcast variable viaSparkContext.broadcast) method to generate

2. HDFS"Write once, read many"__________File access model. Therefore, it is recommended that a document

A) After creating,
B) right or wrong
C) writing and closing,
D) do not modify it again.

3. in aMapReduceapplication,mapThe output of the function is viaMapReduce? ?After processing, send toreduceletter number. This process belongs to? ?Sort and group pairs.

A) True
B) False

4. Does a project require Internet access to a certain area? ? Save and search the full text of these Internet records? ? information, with to prevent crime in the region.
In this scenario, which of the following options is the best?

A) existSolrCreate an index and save the data, and return all the data during full-text search.
B) When storing data, inSolrindex on theHBaseStore complete data? ? when, throughSolrFull-text search to obtain and record record key information, through the key information inHBasefor the full record.
C) existHBasestore data on theHBaseThe filtering characteristics of , satisfy fuzzy matching query.

5. HBasetablerowkeyDesign is a very important development and design link. Suppose there is the following scenario, The most frequent query scenario is to query the historical call records of each month and half a year based on the mobile phone number. Which of the followingrowkey Design is optimal?

A) name ten mobile number
B) date ten phone number
C) Phone number+Name
D) Phone number+date

Solutions: