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Huawei HCIP-Big Data Developer Sample Questions:

1. In Spark application development, which of the following codes can correctly count words?

A) val counts = textFile.map (line=>line.split (" ")).map (word => (word, 1)).groupByKey ()
B) val counts = textFile.flatMap (line=>line.split (" ")).map (word => (word, 1)).reduceByKey(_ +_)
C) val counts = textFile.flatMap (line=>line.split (" ")).map (word => (word, 1)).groupByKey ()
D) val counts = textFile.map (line => line.split ("')).map (-rd => (word, 1)).reduceByKey(_ +_)

2. 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) Put
B) HBaseAdmin
C) PutList
D) HTable

3. In the Fusioninsight HD product, what is wrong about the Kafka secure and non-secure port description?
(Note: The old API refers to the old Producer API and the old Consumer API. Among them, the old Consumer API: refers to the interface defined in kafka.consumer.ConsumerConnector; the old Producer API: refers to the interface defined in kafka.producer.Producer.)

A) The premise for the old API to access a topic through port 21005 is that the server parameter allow.everyone.if.no.acl.found is set to true, and the topic does not have ACL attributes set
B) Kafka cluster security access port defaults to 21007, non-secure access port defaults to 21005.
C) The old API only supports access to port 21005; the new API is compatible with access to non-secure port 21005 and secure port 21007.
D) For topics with ACL set, you can use the old API to connect to port 21005 for access.

4. There are scenarios where 500G of new data is generated by the online system every day, and these data need to be statistically summarized in dimensions such as days, weeks, and months.
Which table is suitable for Hive processing?

A) Tilt table, select the date in the tilt field, and the tilt value is random
B) Bucket table, according to talent
C) Partition table, partition by day
D) Partition + bucket table, partitioned by time, 2560 buckets per partition

5. In FusionInsight HD's Hive, the user-defined UDF can have the same name as the Hive built-in UDF. In this case, the user-defined UDF will be used.

A) False
B) True

Solutions: