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Huawei HCIP-Big Data Developer Sample Questions:

1. Which of the following scenarios is not suitable for Redis? (multiple choice)

A) Counter application: for example, counting the number of people logged in to a certain website
B) Get the latest N data: for example, get the latest 10 comments on a Weibo
C) Complex transaction operations
D) A message queue application that is consumed by multiple consumers at the same time and guarantees that the message is successfully consumed by all subscribers (subscription-notification)

2. In Kafka, Consumer can support both offline and online message consumption, but the consumption of data is sequential consumption.

A) True
B) False

3. In Spark, because DataFrame is a higher-level interface than RDD, the call level will be more. Therefore, the performance of all programs developed based on DataFrame will be worse than that of programs developed based on RDD.

A) True
B) False

4. In Flume, what is the main function of the source function module?

A) Obtain data and convert the original data into data objects that you process
B) Cache data and save the data in memory or files according to different reliability strategies
C) Output data to destination, support multiple output protocols
D) Split the data and send the data to different destinations according to the characteristics of the data

5. 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 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.
B) 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.
C) Using string structure, each field in each row of each table uses a KEY.
D) 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.

Solutions: