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Huawei HCIA-Big Data V3.5 Sample Questions:

1. Regarding the difference and connection between Spark SQL & Hive, which of the following statements is correct? (Multiple choice)

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

2. When Fusioninsight HD deploys Solr, if you choose to store the index on a local disk, it is recommended to mount the disk separately for the data directory of each SolrServer instance, and configure the disk as RAID0 or RAID5.

A) True
B) False

3. In the Flink technical architecture, which of the following is the computing engine for stream processing and batch processing?

A) DataStream
B) Standalone
C) FlinkCore
D) Runtime

4. The HDFS data reading process includes the following steps, please select the correct order.

A) The client calls the open method of the FileSystem instance to obtain the input stream corresponding to the file
B) Obtain the storage location of the data block corresponding to this file in NameNode by calling NameNode remotely through RPC
C) The client calls close to close the input stream
D) If the end of the data block has been reached, then close the connection to the DataNode, and then search for the next data block again until all the data is read
E) After obtaining this input stream, the client calls the read method to read the data. The input stream selects the nearest DataNode to establish a connection and read data

5. Each stage of a Spark task can be divided into jobs, and the division mark is shuffle.

A) True
B) False

Solutions: