H13-711_V3.0-ENU Dumps
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HCIA-Big Data V3.0 Certification
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Which one of the following factors have contributed to the vigorous development of the big data era?
Reduction of hardware cost and increase of network bandwidth
The rise of cloud computing
The popularity of smart terminals and the increase in social demand
All above are correct
Which one of the following commands can be used to clear the data of all databases under the Redis instance?
dropall
flushall
flushdb
dropdb
Now server.channels=ch1 is available, set the Channel type to File Channel, which of the following configurations are correct?
server.channels.ch1.type = file
server.channels.ch1.type = memory
server.channels.type = memory
server.channels.type = file
What is the default resource scheduler for queues in YARN?
FIFO scheduler
Capacity scheduler
Fair scheduler
None of the above is correct
What is the module used to manage the active and standby status of Loader Server processes in Loader?
Job Scheduler
HA Manager
Job Manager
Resource Manager
In many small file scenarios, Spark will start a lot of tasks. When there is a Shuffle operation in the SQL logic, it will greatly increase the number of hash buckets, which will seriously affect performance. In Fusioninsight, for small file scenarios, the () operator is usually used to merge the partitions generated by the small files in the Table to reduce the number of partitions, to avoid generating too many hash buckets during shuffle and improve performance?
group by
coalosce
connect
join
Regarding the warning of insufficient disk capacity in Kafka, which of the following analysis is incorrect for possible reasons?
The disk configuration used to store Kafka data (such as the number of disks, size, etc.) cannot meet the current business data flow announcement, resulting in the disk usage reaching the upper limit
The data storage time configuration is too long, and the data accumulation reaches the upper limit of the disk usage rate
Unreasonable business planning, resulting in uneven data distribution, causing some disks to reach the upper limit of utilization
Broker node failure caused
In the Flink technical architecture, is the calculation engine for stream processing and batch processing.
Standalone
Runtime
DataStream
FlinkCore
Spark is implemented in which of the following programming languages?
C
C++
JAVA
Scala
How is the main master of HBaseM elected?
Random selection
Ruling by RegionServer
Adjudication through Zookeeper
HMaster is a dual-master mode, no adjudication is required
Which of the following HDFS commands can be used to check the integrity of data blocks?
HDFS fsck /
HDFS fsck -delete
HDFS dfsadmin -report
HDFS balancer -threshold 1
When the Loader of Fusioninsight HD creates a job, what is the role of the connector?
Determine the conversion steps
Provide optimization parameters, provide data import and export performance
How the configuration job connects with external data sources
How the configuration job connects with internal data sources
What is the correct description of the Loader job in Fusionlnsight HD?
After the Loader submits the job to YARN for execution, if the Loade transaction is abnormal at this time, the job execution fails.
After the Loader submits the job to YARN for execution, if a Mapper task fails to execute, it can automatically retry
After the Loadet job fails to execute, garbage data will be generated, which needs to be manually cleared by the user
After the Loader submits a job to YARN for execution, no other jobs can be submitted until the job is completed.
What is the default block size of HDFS in Fusioninsight HD system?
32M
64M
128M
256M
Where is the Meta Region routing information of HBase metadata stored in?
Root table
Zookeeper
HMaster
Meta table
Flume supports monitoring and transferring new files under the directory, which can realize data transfer. What kind of source is described of the following?
spooling directory source
http source
exec source
syslog source
Which module is responsible for Fusioninsight Manager user data storage?
CAS
AOS
Kerberos
LDAP