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Huawei HCIP-Big Data Developer Sample Questions:

1. In FusionInsight HD, which of the following are the configuration items of Oozie's MapReduce Action? (multiple choice)

A) source
B) name-node
C) job-tracker
D) mapred.mapper.class

2. Suppose there is an application, there are 10 tables, each table has tens of millions of records, and the number of fields is about 20.
Now Redis is used to cache the data of these 10 tables. For the design of the data structure, which of the following is the best design?

A) Using string structure, each field in each row of each table uses a KEY.
B) Using a hash structure, each row record of each table uses a hash KEY, the field of the hash KEY corresponds to the field of the table record, and each table is designed with a different prefix to distinguish it.
C) A hash structure is adopted, and a table uses a hash KEY, and a row in the table records a field for the hash KEY.
D) Using string structure, each row of each table uses a KEY, and value is the concatenated value of all the fields in a row of the table.

3. What are the several parameter setting methods for Spark applications? (multiple choices)

A) In the application code, set through the SparkConf object
B) When submitting the application, set it through --conf
C) Configure in the application configuration file spark-defaults.conf
D) In the application code, set by the setProperty method of SparkContext

4. Which role in Yarn manages the resources (CPU/Memory) of a single node?

A) NameNode
B) NodeManager
C) ResourceManager
D) Data Node

5. 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) 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.
C) For topics with ACL set, you can use the old API to connect to port 21005 for access.
D) Kafka cluster security access port defaults to 21007, non-secure access port defaults to 21005.

Solutions: