Free HCIA-Big Data V3.0 Practice Questions

A.  

Responsible for storing and reading data

B.  

Data storage and retrieval are performed according to the scheduling of the client or the name node

C.  

Records all operations for file creation, deletion, renaming, et

C.  

D.  

Periodically send the namenode a list of its own stored blocks.

A.  

HBasePeriod refreshMemstore, silentthink period is 1Hour

B.  

When the number of files in WALs reaches a threshold

C.  

The total size of the MemStore in the Region has reached the preset Flush Size threshold

D.  

The ratio of the total memory occupied by the MemStore to the total memory of the RegionServer exceeds the preset threshold size

A.  

Single Column Value Filter

B.  

Filter List

C.  

Row Filter

D.  

Key Only Filter

A.  

Active NameNode

B.  

Standby NameNode

C.  

DataNode

D.  

All of the above are wrong

A.  

time window

B.  

sliding window

C.  

session window

D.  

Cout window

A.  

Flink

B.  

HBase

C.  

Hive

D.  

HDFS

A.  

Extensibility

B.  

High reliability

C.  

high performance

D.  

Ease of use

A.  

HDFS

B.  

NameNode

C.  

DataNode

D.  

HBase

A.  

Spark SQL

B.  

Spark Streaming

C.  

Spark GraphX

D.  

Spark Mllib