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Huawei HCIP-Big Data Developer Sample Questions:

1. In Spark, assuming that lines is a DStream object, which of the following statements can periodically count the number of words on this stream?

A) Iines.flatMap(_.split (" " )).map(word => (word, 1)).reduce(_ +_).print()
B) Iines.flatMap(_.split (" " )).flatMap(word => (word, 1)).groupByKey(_ +_).print()
C) Iines.flatMap(_.split (" " )).map(word => (word,word.Iength())).reduceByKey (_ +_).print()
D) Iines.fIatMap(_.spIit (" " )).map(word => (word, 1)).reduceByKey(_ +_).print()

2. Hive service and HBase service are deployed on a FusionInsight cluster, and two apps (applications) are deployed on Tomcat. One app is to access the HBase service, and the other app is to access the Hive service. Regarding authentication, which methods are as follows Is it right? (multiple choice)

A) Just do authentication on the app that accesses the Hive service.
B) Deploy these two apps to two independent Tomcats, and then authenticate each
C) Just do authentication on the app that accesses the HBase service
D) Combine these two apps into one and do authentication on the new app

3. To create a table through HBase's createTable method, what parameters must be passed in?

A) Table names and columns
B) Can be empty
C) Table name
D) Table name and column family

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) False
B) True

5. Regarding Kafka's Producer, which of the following statements is correct? (multiple choice)

A) Producer is a message producer
B) When Producer produces data, it needs to connect to ZooKeeper first, and then connect to Broker
C) Multiple Producer processes can be started at the same time to send data to the same topic
D) Producer production data needs to specify Topic

Solutions: