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

1. In the Fusionlnsight cluster, which of the following components does Spark mainly interact with? (Multiple choice)

A) Hive
B) HDFS
C) YARN
D) Zookeeper

2. Which of the following statements about ZKFC is wrong?

A) ZKFC (ZKFailoverController) is used as a client of Zookeeper cluster to monitor the status information of NameNode
B) The ZKFC process needs to be deployed in the NameNode node and Zookeeper's Leader node
C) The Standby NameNode perceives the status of the Active NameNode through Zookeeper. Once the Active NameNode goes down, the Standby NameNode will perform the master promotion operation
D) The ZKFC of HDFS NameNode connects to Zookeeper, and saves information such as the host name in Zookeeper

3. The figure below shows the Flume data transmission architecture. What is the component at the "?" in the figure?

A) Channel selector
B) Interceptor
C) None of the above is correct
D) Channel processor

4. The HDFS data reading process includes the following steps, please select the correct order.

A) The client calls close to close the input stream
B) After obtaining this input stream, the client calls the read method to read the data. The input stream selects the nearest DataNode to establish a connection and read data
C) If the end of the data block has been reached, then close the connection to the DataNode, and then search for the next data block again until all the data is read
D) The client calls the open method of the FileSystem instance to obtain the input stream corresponding to the file
E) Obtain the storage location of the data block corresponding to this file in NameNode by calling NameNode remotely through RPC

5. Which command in Redis is to view the remaining lifetime of the key?

A) expire
B) persist
C) ttl
D) expired

Solutions: