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Huawei HCIP-Big Data Developer Sample Questions:

1. In FusionInsight HD, regarding Oozie's job operation commands, which of the following descriptions are correct? (multiple choice)

A) The start command can make the job in the PREP state become RUNNING
B) The submit command can change the status of the job to PREP
C) The run command can make the job status RUNNING
D) The kill command can be used on jobs in PREP/SUSPEND/RUNNING status

2. In HDFS application development, which of the following are the interfaces supported by the HDFS service? (multiple choice)

A) FileSystem.append
B) BufferedOutputStream.write
C) BufferedOutputStream.flush
D) FileSystem.create

3. In Spark, which statement about broadcast variables is correct?

A) The broadcast variable is saved in each Executor
B) Broadcast variables are read-only
C) Broadcast variables are generated by the SparkContext.broadcast() method
D) Broadcast variables are saved in each Task

4. When the cluster is normal, the Redis client initiates a get call, and there are () message interactions between the client and the server?

A) 4
B) 3
C) 2
D) 1

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

A) The file data is first returned from the DataNode to the NameNode, and then sent from the NameNode to the client.
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) Download data from the nearest DataNode first.
D) Support multiple clients to read the same file data from the DataNode at the same time.

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