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Huawei HCIP-Big Data Developer Sample Questions:

1. In the implementation of the business logic of HBase writing data, which of the following interfaces or classes does not need to be involved?

A) HTable
B) Put
C) PutList
D) HBaseAdmin

2. In HBase application development, when the Rowkey range and distribution of a table are known, it is recommended to pre-divide regions. After calling the following code (fragment) to pre-divide a table into regions, this table will create several regions.
//Create a table of pre-partitioned regions
byte[][] splits=new byte[4][];
splits[0] = Bytes.toBytes("A");
splits[1] = Bytes.toBytes("H");
splits[2] = Bytes.toBytes("O");
splits[3] = Bytes.toBytes("U");
admin.createTable (htd, splits);

A) 6
B) 4
C) 5
D) 3

3. Which of the following is correct about the HDFS client's file reading process? (multiple choice)

A) Download data from the nearest DataNode first.
B) If the client and the connected DataNode fail during reading, the client will abandon the failed node and connect to the node where the other replica is located.
C) The file data is first returned from the DataNode to the NameNode, and then sent from the NameNode to the client.
D) Support multiple clients to read the same file data from the DataNode at the same time.

4. HDFS adopts a file access model of "write once, read many times". Therefore, it is recommended that after a file is created, written, and closed, it should not be modified.

A) True
B) False

5. In Spark, the accumulator can realize high-speed parallel counter and variable summation; in the process of Spark application development, only the value of this counter can be obtained on the Driver.

A) True
B) False

Solutions: