Huawei H13-711_V3.0 : HCIA-Big Data V3.0

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Huawei HCIA-Big Data V3.0 Sample Questions:

1. In Spark SQL tables, there are often many small files (the size is much smaller than the HDFS block size). In this case, Spark will start more Tasks to process these small files. When there is a Shuffle operation in the SQL logic, it will Greatly increase the number of hash buckets. This seriously affects performance.

A) True
B) False

2. If there are only Default, QueueA and QueueB sub-queues in the YARNU group, then their capacities are allowed to be set to 60%, 25%, and 22% respectively.

A) True
B) False

3. Which of the following statements about CarbonData in Fusioninsight is correct?

A) arbon is a new Apache Hadoop native file format that uses advanced columnar storage, indexing, compression, and encoding techniques to improve computational efficiency to help accelerate data queries over petabytes of magnitude, and can be used for faster interactive queries.
B) cArbon uses a combination of lightweight compression and heavyweight compression to compress data, which can reduce data storage space by 60%-80% and greatly save hardware storage costs.
C) cArbon is also a high-performance analytics engine that integrates data sources with spark.
D) The purpose of using carbon is to provide ultra-fast responses to ad-hoc queries on big data.

4. Which of the following descriptions about the functions of HRegionServe in HBase are incorrect?

A) Manage all Regions, Regions can be migrated between RegionServers
B) Data processing and computing unit of HBase
C) The RegionServer is generally deployed with the NameNode of the HDFS cluster to realize the data storage function.
D) Regionserver is the data service process of HBase, responsible for processing user data read and write requests

5. During the deployment of Fusioninsight HD, the CheckNode.Config configuration file must be called when performing precheck to check each node.

A) True
B) False

Solutions: