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Huawei HCIP-Big Data Developer V2.0 Sample Questions:

1. Suppose there is an application with10Tables, each table has tens of millions of records, and the number of fields is about20indivual.
Currently usingRedisto cache this10The data of a table, the design of its data structure, which of the following is the best design?

A) usestringstructure, each field of each row record of each table uses oneKEY.
B) usehashstructure, each row record of each table uses onehash key,hash keyoffieldThe fields of the corresponding table records, and designKEYEach table adds a different prefix to distinguish it.
C) usestringstructure, each row record of each table uses oneKEY,valueAll fields recorded for a row in a table? ?back value of .
D) usehashstructure, and a table uses ahash key, a row in the table records forhash keyone offield.

2. HDFSofClientWhen writing to a file, the first copy of the data is written to the location specified byNameNodeSure, The other replicas are written to byDataNodeSure.

A) True
B) False

3. HDFSRuntime,NameNodewill load the entire metadata of the file system from disk into memory, so the file system The total number of files that can be stored is limited byNameNodememory capacity.

A) True
B) False

4. aboutStreamingdisaster recovery capability, which of the following statements is correct? (multiple choice)

A) WorkerCan be used after abnormal exitSupervisorPulls up automatically without manual intervention.
B) SupervisorAfter the process exits, it can beNimbusAutomatically identify and pull up without affecting running business.
C) When a node fails, the tasks on the node will be reassigned to other normal nodes without manual intervention.
D) NimbusAfter the failure, the backupNimbusIt will take over automatically without affecting the running business.

5. aboutFlumeThe characteristics of the collected data, which of the following descriptions are correct?

A) Trigger data collection with external timing tasks
B) with the help ofMapReducetask parallel collection
C) Supports distributed and streaming acquisition
D) Only structured data can be collected

Solutions: