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Huawei HCIP-Big Data Developer Sample Questions:

1. Which of the following measures can improve the query performance of HBase? (multiple choice)

A) Use secondary indexes to adapt to more query scenarios
B) The data read at the same time are stored in the same cell
C) Query frequent attributes are placed in front of rowkey
D) Pre-divide regions to make regions evenly distributed and improve concurrency

2. Which of the following methods can generate DStream objects?

A) KafkaUtils.createStream(...)
B) KafkaUtils.createDirectStream(...)
C) StreamingContext.socketStream(..)
D) StreamingContext.fileStream(...)

3. When designing a certain collection of Solr, you need to design its Schema, and realize the design of the Schema by configuring the schema.xml file. What is wrong about the Schema statement below?

A) Schema is similar to the table structure in a relational database. It is used to define the structure of index data. It mainly consists of three parts: unlqueKey, Field and FleldType.
B) For fields that do not need to store the original value, the stored attribute can be set to false.
C) For a field of the same document, there are multiple values, and they all need to be retained, then the multiValued of the field must be set to true.
D) copyField can be defined as follows: <field name= " cat " type= " string " indexed = " true " stored = " true " docValues= " true " multiValued= " false " /> <field name= " dog " type = " string " indexed = " true " stored = " true " docValues= " true " multi Valued = " false " /> <field name= " text " type= " text_general " indexed = " true " stored = " false " multiValued = " false " /> <copyField source= " cat " dest= " text " maxChars= " 30000 " /> <copyField source= " dog " dest= " text " maxChars = " 30000 " />.

4. Solr is a high-performance, full-text search service based on Lucene. Solr has extended Lucene to provide a richer query language than Lucene, and implements a powerful full-text search function with a high degree of scalability. At the same time, starting from Solr 4.0 version, SolrCloud mode is supported.

A) True
B) False

5. When adding a RegionServer host to an HBase cluster, you must stop the original cluster first, because HBase does not support dynamic expansion.

A) True
B) False

Solutions: