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Huawei H13-711-ENU Exam Syllabus Topics:

Huawei HCIA-Big Data(Huawei Certified ICT Associate-Big Data) Sample Questions:

1. 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.

A) connection
B) coalosce
C) join
D) group by

2. When the Client of HDFS writes a file, the writing position of the first copy of the data is determined by the NameNode, and the writing position of other copies is determined by the Data Node.

A) False
B) True

3. What is the default resource scheduler for queues in YARN?

A) All of the above are correct
B) FIFO scheduler
C) Fair Scheduler
D) Capacity Scheduler

4. The Group (group) of LdapServer is a unified group management for users. If a user is added to the group, the dn record of the member will be added to the member attribute of the group.

A) False
B) True

5. In the Mapreduce process, by default, a fragment is a block and a mapTask.

A) False
B) True

Solutions: