Huawei HCIA-Big Data(Huawei Certified ICT Associate-Big Data) - H13-711-ENU 模擬練習
The Container of the Spark task can run multiple tasks.
正解: B
The Streaming of Fusioninsight HD is developed based on the open source Apache Storm, which is a distributed offline computing framework.
正解: B
HiveServer compiles and parses HQL statements submitted by users into corresponding Yarn tasks, Spark tasks, or HDPS operations, thereby completing data extraction, conversion, and analysis.
正解: A
Which of the following statements about Fusioninsight HBase visual modeling is correct? (Multiple choice)
正解: A,B,D
The job execution of Loader failed, the imported data will not be deleted automatically and must be deleted manually.
正解: B
In many small file scenarios, Spark will start many tasks. When there is a Shuffle operation in the SQL logic, the number of hash buckets will be greatly increased, which will seriously affect the performance. In Fusioninsight, the () operator is usually used for small file scenarios to merge the partitions generated by the small files in the Table to reduce the number of partitions, so as to avoid generating too many hash buckets during shuffle and improve performance.
正解: B
When the size of a Region gradually increases in HBase, it may be pruned.
正解: B
When the Flume process is cascaded, which of the following sink types are used to receive the messages sent by the previous hop Flume? (Multiple choice)
正解: B,C
When the delay event occurs, the window has been closed and the calculation result has been produced. Which of the following processing methods is unreasonable? (Multiple choice)
正解: A,B,C,D
The "UNION ALL" operator in Hive is used to combine the result sets of two or more SELECT statements, and duplicate values are not allowed in the result set.
正解: B
Hive is a data warehouse infrastructure built on Hadoop. It provides a set of tools that can be used to extract, transform and load (ETL), which is a mechanism for storing, querying and analyzing large-scale data stored in Hadoop.
正解: A
In the flume architecture, a Source can connect to multiple channels.
正解: A
What physical resources does Redis mainly consume?
正解: A
The following provides a variety of Redis optimization methods, which option is wrong?
正解: A