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Which of the following operations cannot be recorded in the Fusioninsight HD system audit log( )

A.

delete service instance

B.

Start and stop the service instance

C.

Manually clear the camp

D.

Query history monitoring

When HBasel is deployed in a Fusioninsight HD cluster with N nodes, it is recommended to deploy( )HMasteri process,( )A RegionServeri process.

A.

3, N

B.

N, N

C.

2, N

D.

2.2

When creating a Loader job, in which of the following steps can the number of Maps be set?

A.

output

B.

input settings

C.

convert

D.

Basic Information

Which of the following descriptions about Zookeeper features is wrong?

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

The underlying data of HBase exists in the form of?

A.

keyvalue

B.

column store

C.

row storage

D.

real-time storage

Fusioninsight Hadoop:In the cluster, query through df-hT on a node. The partitions you see include the following: /var/log/srv/BigData/srv/BigData/hadoop/data5/srv/BigData/solr/solrserver3/What is the optimal RAID level planning combination for the disks corresponding to the srv/BigData/dbdadom partitions?

A.

Raido Raid1 Raido Non-Raidl

B.

Raidl Raid1 Non-RaidNon-Raid Raidl

C.

Raido raido Raido Raido raid0

D.

Non-Raid Non-Raid Non-Raid Non-Raid Raid1

The picture below shows Sparke&MapReduce performance comparison data, it can be concluded that compared with MapReducei computing, Spark uses( )resources, get( )double the performance?

A.

1/8, 3

B.

1/10, 3

C.

1/10, 4

D.

1/8, 4

Which of the following commands downloads directory files from HDFS to local?

A.

dfs-cat

B.

dfs -mkdir

C.

dfs -get

D.

dfs-put

When the loader in Fusioninsight HD imports files from the SFTP server, which of the following file types does not require encoding conversion and data conversion and is the fastest?

A.

sequence_file

B.

text_file

Cbinary_file

C.

graph_file

What kind of computing tasks are the MapReduces components in Hadoop good at?

A.

Iterative calculation

B.

Offline computing

C.

real-time interactive computing

D.

Streaming Computing

F1ume is used to collect data, and the basic unit of data transmitted by the device is

A.

Split

B.

Block

C.

Event

D.

Packet

Which parameter needs to be configured to enable the log aggregation function of the YARN component in the Hadoop platform?

A.

YARN.nodemanager.local-dir

B.

YARN.nodemanager.log-dirs

C.

YARN.acl.enable

D.

YARN.log-aggregation-enable

What is the default Block Size of HDFS in Fusioninsight HD system?

A.

32M

B.

64M

C.

128M

D.

256M

Which of the following is not a role or service involved in the process of reading data in HBasei?

A.

HDFS

B.

HRegionServer

C.

LHMaster

D.

ZooKeeper

Regarding the basic operation of Hive table building, which is the correct description?

A.

When creating an external table, you need to specify the external keyword

B.

Once the table is created, the table name cannot be changed

C.

Once the table is created, the column names cannot be changed

D.

Once the table is created, no new columns can be added