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Huawei HCIA-Big Data V3.0 Sample Questions:

1. In the era of big data, which of the following challenges are faced by enterprises?

A) Scattered data has problems such as noise, missing, and non-standard storage types, which requires a lot of data preprocessing.
B) technological advancements of competitors.
C) Diversified data structures.
D) Data is scattered among various departments of the enterprise, and the same data is stored in different formats within each department.

2. Which of the following scenarios is not applicable to Hive?

A) Non-real-time analysis, such as log analysis, statistical analysis
B) Data aggregation, such as daily, weekly user clicks,Click to rank
C) Data mining, such as user behavior analysis, interest division, regional display
D) Real-time online data analysis

3. HashThe value of type stores the mapping of fields and field values, and fields and field values can only be( )

4. About Spark SQL&Hive difference and connection, which of the following statements is correct?

A) Spark SQL relies on Hive metadata
B) Spark SQL cannot use Hive's custom functions
C) The execution engine of Spark SQL is Spark core, HiveThe default execution engine is MapReduce
D) Spark SQL is compatible with most Hive syntax and functions

5. In F1ink, the checkpoint mechanism can ensure that when the application fails during operation, it can recover from a certain checkpoint. During this process, stream snapshots are created in sequence according to the order of data inflow.

A) False
B) True

Solutions: