Free HCIA-Big Data V3.0 Practice Questions

A.  

There can be further partitions or buckets under the partition

B.  

The data table can be partitioned by the value of a field

C.  

Each partition is a directory

D.  

The number of partitions is fixed

A.  

Partition

B.  

Sort

C.  

Spill/Merge

D.  

Ccombine

A.  

2

B.  

3

C.  

4

D.  

5

A.  

After the Loader submits the job to YARN for execution, if the Loade phase is abnormal at this time, the job fails to execute.

B.  

The Loader submits the job to the small YARN for execution. If a Mapper task fails to execute, it can automatically retry

C.  

After the Loadet job fails to execute, garbage data will be generated, which needs to be cleared manually by the user

D.  

After the Loader submits a job to YARN for execution, other jobs cannot be submitted until the job is executed.

A.  

Datastream API, DataSet API

B.  

Data batch API.DataStream API

C.  

Stream API.Batch API

D.  

Batch API, Stream API

A.  

The number of Zookeeper nodes must be odd.

B.  

Updates sent by the client are applied in the order in which they were sent.

C.  

Message updates can only succeed or fail, with no intermediate states.

D.  

A message needs to be received by more than half of the servers.it will be able to successfully write to disk

A.  

3, N

B.  

N, N

C.  

2, N

D.  

2.2

A.  

APPMaster

B.  

ResourceManager

C.  

Container

D.  

NodeManager

A.  

Service level configuration can take effect for all instances

B.  

Instance-level configuration takes effect only for this instance

C.  

Instance-level configuration also takes effect on other instances

D.  

After the configuration is saved, you need to restart the service to take effect

A.  

The file data of the client is passed to the DataNode through the NameNode

B.  

Allows the client to divide the file into multiple blocks, according to DaThe address information of taNodel is entered into each DataNode in order

C.  

The client writes the entire file to each DataNodel in sequence according to the address information of the DataNode, and then divides the file into multiple blos by the DataNode)ck

D.  

The client only uploads data to one DataNode, and then the NameNodet is responsible for block replication