Great H13-711_V3.0 Dumps to Earn HCIA-Big Data Certification

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Page 1 of 15

1. Among the big data computing tasks, which of the following description of IO-intensive tasks is wrong?

During the execution of IO-intensive tasks, most of the time is spent on IO

By improving network transmission efficiency and read-write efficiency, performance can be greatly improved

High CPU consumption

The more tasks, the higher the CPU efficiency

2. Which of the following HDFS commands can be used to check the integrity of a data block?

HDFS fsck

HDFS fsck -delete

HDFS dfsadmin -report

HDFS balancer-threshold 1

3. Which of the following description of Flink barrier is wrong?

The barrier is periodically inserted into the data stream and flows as part of the data stream

barrier is the core of Flink snapshot

A barrier separates the data of this cycle snapshot from the data of the next cycle snapshot

When the barrier is inserted, the data flow will be temporarily blocked

4. During operation, the Kafka cluster directly depends on which of the following components?

Zookeeper

HDFS

Spark

HBase

5. On the Fusioninsight Manager interface, which of the following options is not included in the loader operation?

Switch Loader active and standby nodes

Start the loader instance

Configure loader parameters

View loader service status

6. In the Fusioninsight HD system, which component does the flume data stream not pass through in the node?

sink

topic

Source

Channel

7. Which of the following functions can the Kafka Cluster Mirroring tool achieve?

Kafka cross-cluster data synchronization scheme

Data backup in Kafka single cluster

Kafka but data recovery within the cluster

None of the above is correct

8. Where is the HBase metadata Meta Region routing information stored?

Root table

Zookeeper

HMaster

Meta table

9. Which of the following factors have contributed to the vigorous development of the big data era?

Reduction of hardware cost and improvement of network bandwidth

The rise of cloud computing

The popularity of smart terminals and the improvement of social needs

All of the above are correct

10. Which of the following is not a state store supported by Flink?

FsStateBackend

RocksDBStateBackend

MemoryStateBackend

FileStateBackend

Page 2 of 15

11. Which of the following descriptions about the characteristics of big data and traditional database data is wrong?

Big data is the data processing of "fish in the pond", with a clear goal; the data processing of traditional databases is to judge whether other kinds of "fish" exist through certain "fish"

There are many types of data processed by big data, including structured, unstructured and semi-structured data; the types of data in traditional databases are relatively single, often structured data

In big data, there is no unified data tool, that is, "No size fits all"; in traditional databases, in a specific business scenario, often one tool can solve a problem, that is, "One size fits all" all"

The data scale of big data is very large, and TB and PB are generally used as data processing units; the data scale in traditional databases is generally small, and MB is often used as data processing units

12. Which of the following statements about ZKFC is wrong?

ZKFC (ZKFailoverController) is used as a client of Zookeeper cluster to monitor the status information of NameNode

The ZKFC process needs to be deployed in the NameNode node and Zookeeper's Leader node

The Standby NameNode perceives the status of the Active NameNode through Zookeeper. Once the Active NameNode goes down, the Standby NameNode will perform the master promotion operation

The ZKFC of HDFS NameNode connects to Zookeeper, and saves information such as the host name in Zookeeper

13. Flume supports monitoring and transferring new files in the directory, which can realize data transfer. Which type of source is described above?

spooling directory source

http source

exec source

syslog source

14. How is the HBaseM main Master elected?

Randomly selected

Adjudicated by RegionServer

Judgment via Zookeeper

HMaster is in dual-master mode and does not need to be adjudicated

15. A user needs to build a 350-node FusionInsight HD cluster, which planning scheme is the best?

Deployment of management nodes, control nodes, and data nodes in one, Layer 2 networking

Integrated deployment of management nodes and control nodes, independent deployment of data nodes, and Layer 2 networking

Management nodes, control nodes, and data nodes are deployed independently, three-tier networking

Integrated deployment of management nodes and data nodes, independent deployment of control nodes, and Layer 2 networking

16. When the number of nodes in the Zookeeper cluster is 5 nodes, how many nodes are equivalent to the disaster recovery capability of the cluster?

None of the above

17. When viewing the partition details of a topic in Kafka, which of the following commands should be used?

bin/kafka-topic.sh -create

bin/kafka-topic.sh -list

bin/kafka-topic.sh -describe

bin/kafka-topic.sh -delete

18. The following provides a variety of Redis optimization methods, which option is wrong?

Simplified key names and key values

Turn off Transparent Huge Pages

Modify the minimum number of tcp connections in Linux

Modify the Linux kernel memory allocation strategy or execute sysctl

19. How many copies of HDFS blocks are saved by default in the Fusionlnsight HD system?

3 _

not sure

20. Which component controls the active/standby arbitration in HDFS?

Zookeeper Failover Controller

Node Manager

Resource Manager

HDFS Client

Page 3 of 15

21. Which nodes need to communicate with external data sources before and after the Fusioninsight HD Loader operation?

Loader service master node

Nodes running YARN service jobs

Both of the first two are required

Neither of the first two is required

22. YRAN's label-based scheduling, which of the following options is used for labeling?

APPMaster

Resource Manager

Container

Node Manager

23. Which of the following is not a mandatory option when creating a Loader job?

name

connection

type

Priority

24. The figure below shows the calculation model of Structured Streaming. Through observation, it can be concluded that the final calculation result of T3 is?

Dog 1, owl 1

Cat 2, dog 4, owl 2

Cat 2, dog 3, owl 1

Cat 1, cat 1, dog 2, dog 2, owl 2

25. Fusioninsight HD system audit log is unavailable to record which of the following operations?

Clear warnings manually

Start and stop the service instance

Delete service instance

Query History Monitoring

26. In the Flink technical architecture, which of the following is the computing engine for stream processing and batch processing?

Standalone

Runtime

DataStream

FlinkCore

27. FusionInsight HD uses the Hbase client to write 10 pieces of data in batches. A certain HRegionServer node contains two Regions of the table, namely A and B. Among the 10 pieces of data, 6 pieces belong to A and 4 pieces belong to B. Excuse me. How many RPC requests need to be sent to HRegionServer to write these 10 pieces of data?

28. The RowKey of a table in HBase is divided into SplitKey 9, e, a, z. How many Regions does this table have?

29. What physical resources does Redis mainly consume?

memory

Bandwidth

Hard disk space

Disk I/O

30. Which of the following programming languages is implemented in Spark?

C++

JAVA

Scala

Page 4 of 15

31. What is wrong about the architecture description of Hive in FusionInsight HD?

As long as one HiveServer is unavailable, the entire Hive cluster will be unavailable

HiveServer is responsible for accepting client requests, parsing, executing HQL commands and returning query results

MetaStore is used to provide original data services and depends on DBServer

At the same time, only one HiveServer is in the Active state, and the other is in the Standby state

32. In creating a Loader job, which of the following steps can set the filter type?

Input settings b. Conversion c. output

Basic information

33. Which of the following is not a core element of Krb Server?

KDC (Key Distribution Center)

Kerberos Client

Kerberos KDC Client

Kerberos KDC Server

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

YAR

nodemanager.local-dir

YAR

nodemanager.log-dirs

YAR

acl.enable

YAR

log-aggregation-enable

35. When installing the Streaming component of Fusioninsight HD, the Nimbus role requires how many nodes to be installed?

36. Which of the following installation process of Fusioninsight HD is correct?

Install Manager->execute preinstall->LLD tool to configure->install cluster->check after installation->configure after installation

Configure with LLD tool -> Execute preinstall -> Install Managers -> Install cluster -> Check after installation -> Configure after installation

Install Manager->LLD tool to configure->execute preinstall->install cluster->check after installation->configure after installation

LLD tool for configuration -> execute preinstalls -> install cluster -> install Manager -> check after installation -> configure after installation

37. When the loader in Fusioninsight HD imports files from the SFTP server, which one of the following is the fastest file type that does not require code conversion and data conversion?

sequence_file

text_file

binary_file

graph_file

38. If the data producer needs to decide to send the data to a certain task of the target Bolt, which of the following message publishing strategies should be selected?

Local field grouping

Broadcast packet

Direct grouping

Global grouping

39. In the Fusioninsight Hadoop cluster, through df-hT query on a certain node, the partitions seen include the following:

/var/log

/srv/BigData

/srv/BigData/hadoop/data5

/srv/BigData/solr/solrserver3

/srv/BigData/dbdataom

What is the planning combination of the optimal Raid level for the disks corresponding to these partitions?

Raid0 Raid1 Raid0 Non-Raid1

Raid1 Raid1 Non-Raid Non-Raid Raid1

Raid0 Raid0 Raid0 Raid0 Raid0

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

40. Which of the following descriptions about the key features of Flink is wrong?

Compared with Flink, SparkStreaming has lower latency

The Flink stream processing engine can provide support for both stream processing and batch processing applications

Compared with Streaming in FusionInght HD, Flink has higher throughput

checkpoint implements Flink's fault tolerance

Page 5 of 15

41. Which of the following options are suitable for MapReduce?

Offline Computing

Real-time interactive computing

Iterative calculation

Stream computing

42. What is the physical storage unit of Region in Hbase?

Region

ColumnFamily

Column

Row

43. In Fusioninsight products, which of the following descriptions are correct about creating Kafka topics?

When creating a Kafka Topic, the number of Partitions must be set

When creating a Kafka Topic, you must set the number of Partition copies

Setting up multiple copies can enhance the disaster recovery capability of Kafka service

All of the above are correct

44. Which parameter needs to be configured to set the maximum amount of resources used by queue QueueA in YARN?

yarn.scheduler.capacity.root.Queue

user-limit-factor

yarn.scheduler.capacity.root.Queue

minimum-user-limit-percent

yarn.scheduler.capacity.root.Queue

state

yarn.scheduler.capacity.root.Queue

maximum-capacity

45. The __ interface in Flink is used for streaming data processing, and the ______ interface is used for batch processing.

DataStream API, DataSet API

Data batch API, DataStream API

Stream API, Batch API

Batch API, Stream API

46. Which is not the channel type of Flume?

Memory Channel

File Channel

JDBC Channel

HDFS Channel

47. In the task scheduling process of YARN, which of the following tasks is the responsibility of the Application Master?

Applying for and receiving resources

Set up the running environment for the task

Allocate Containers

Start the Map or Reduce task

48. As shown in the figure, which of the following description about the Kafka message consumer reading the message is wrong?

The blue in the picture is a topic of Kafka, which can be understood as a queue, and each grid represents a message.

The messages generated by the producer are placed at the end of the topic one by one.

Consumers read messages sequentially from right to left.

Consumer uses offset to record the read position

49. In which of the following links is the data conversion operation of Flink completed?

soure

Transformation

Sink

Channel

50. Which is the correct description about Supervisor of Fusioninsight HD Streaming?

Supervisor is responsible for resource allocation and task scheduling

Supervisor is responsible for accepting tasks assigned by Nimbus, starting and stopping Worker processes managed by itself

Supervisor is a process that runs specific processing logic

Supervisor is a component that receives data in Topology and then performs processing

Page 6 of 15

51. In Fusioninsight HD, if you need to view the users and permission groups currently logged into HBase, what commands can you execute in the HBase shell?

use_permission

whoami

who

get_user

52. Which of the following options cannot be realized through big data technology?

Business model discovery

Credit Evaluation

Product recommendation

Operational Analysis

53. What is the index name of ElasticSearch?

ddcvc

doc

logstash-2020.01.17

3sDqsm8Bu-kTplz0jqhL

54. What components does HBase use by default as its underlying file storage system?

File

Kafka

Memory

HDFS

55. Which of the following options in the HBase command has the worst performance

put

get

list

Scan

56. In the MRS platform, which component does the Flume data flow not need to pass through in the node?

Sink

Channel

Topic

Source

57. The figure below shows the Flume data transmission architecture. What is the component at the "?" in the figure?

Interceptor

Channel processor

Channel selector

None of the above is correct

58. Which of the following commands can clear the data of all databases under the Redis instance?

dropall

flushall

flushdb

dropdb

59. In the Fusioninsight product, which of the following descriptions about the kafka topic is wrong?

Each Topic can only be divided into one partition (area)

The number of partitions of Topic can be configured at the time of creation

The storage level of each Partition corresponds to a log file, and all information data is recorded in the log file

Each message published to Kafka has a category. This category is called Topic, which can also be understood as a queue for storing messages.

60. What is the core module of spark?

spark streaming

spark core

mapreduce

spark sql

Page 7 of 15

61. Which one is correct about the description of the Loader job in FusionInsight HD?

After the Loader submits the job to Yam for execution, if the Loader service is abnormal at this time, the job execution fails.

After the Loader submits the job to Yam for execution, if a Mapper task fails to execute, it can automatically retry

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

After the Loader submits a job to Yam for execution, no other jobs can be submitted until the job is executed

62. Regarding the basic operation of Hive table creation, which of the following description is correct?

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

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

The external keyword needs to be specified when creating an external table

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

63. Regarding the Controller and NodeAgent in FusionInsightManager, which statement is correct?

Controller sends heartbeat to NodeAgent every 3 seconds

NodeAgent accepts the commands issued by the Controller and executes specific actions

Each node must deploy a Controller

NodeAgent is open source enhanced

64. What data types of application scenarios are HBase of Hadoop not suitable for?

Large file application scenarios

Mass data application scenarios

High throughput application scenarios

Semi-structured data application scenarios

65. Which of the following descriptions about Hive features is wrong?

Flexible and convenient ETL

Only supports MapReduce computing engine

Can directly access HDFS files and HBase

Easy to use and easy to program

66. What is the meaning of this command "ALTER TABLEemployee1ADDcolumns (columnlstring);" in Hive?

Drop table

Add columns

Create table

Modify the file format

67. Which of the following scenarios is Hive not suitable for?

Real-time online data analysis

Non-real-time analysis, such as log analysis, statistical analysis

Data mining, such as user behavior analysis, interest segmentation, and regional display

Data summary, such as daily and weekly user clicks, click ranking

68. If you want to add 1 to the digital value stored in Key, which command should you use?

incr

decr

incrby

decrby

69. Which of the following description about Kafka is wrong?

Used as the basis for activity streams and operational data processing pipelines

Developed by Apache Hadoop and open sourced in 2011

It has the characteristics of information persistence, high throughput, and real-time

Using Scala, Java language implementation

70. In the YARN service, if the capacity of the queue QuqueA is to be set to 30%, which parameter should be configured?

YAR

scheduler.capacity.root.Queue

user-limit-factor

YAR

scheduler.capacity.root.Queue

minimum-user-limit-percent

YAR

scheduler.capacity.root.Queue

capacity

YAR

scheduler.capacity.root.Queue

state

Page 8 of 15

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

32M

64M

128M

256M

72. How many shards does an index library of ElasticSearch have by default?

73. Which instance must be deployed with the Loader instance in FusionInsight HD?

DataNodes

RegionServer

Resource Manager

Node Manager

74. What is the module used to manage the active and standby status of the Loader Server process in the Loader?

Job Scheduler

HA Manager

Job Manager

Resource Manager

75. During the data collection process of Flume, which of the following options the data can be filtered and modified?

Channel

Channel Selector

Interceptor

Sink

76. The main role of Zookeeper in distributed applications does not include which of the following options?

Election of Master nodes

Ensure data consistency on each node

Allocate cluster resources

Store server information in the cluster

77. Regarding the warning of insufficient Kafka disk capacity, which of the following analysis is wrong for the possible reasons?

The disk configuration used to store Kafka data (such as the number and size of disks, etc.) cannot meet the current business data flow declaration, causing the disk usage to reach the upper limit

The data storage time is configured too long, and the data accumulation reaches the upper limit of disk usage

Unreasonable business planning, resulting in uneven data distribution, causing some disks to reach the upper limit of usage

Broker node failure causes

78. In Kafka HA, when the Leader corresponding to the Partition goes down, a new Leader needs to be elected from the Followers. Which of the following roles will perform it?

Follower

Controller

Broker

Leader

79. Which of the following description about HBase's Region Split process is wrong?

The table will suspend service during the Split process

Split splits a Region into two Regions in order to reduce the data size in the Region

The Region that is split during the Split process will suspend the service

During the Split process, the file is not really split, only the reference file is created

80. Provide enterprise-level metadata management under the DGC platform architecture. Data asset management is visualized and supports drilling and traceability. Through the data map, which module can realize the data lineage and data panorama visualization of data assets, and provide data intelligent search and operation monitoring?

Data development

Data asset management

Specification design

Data Integration

Page 9 of 15

81. When the Spark application is running, what is the basis for Stage division?

task

taskSet

action

shuffle

82. Regarding DataSet, which of the following statements is wrong?

DataSet is a strongly typed collection of domain-specific objects

DataSet can perform most operations without deserialization

DataSet performs sort, filter, shuffle and other operations that need to be deserialized

DataSet is highly similar to RDD, and its performance is better than RDD

83. What does Fusioninsight HD HBase use by default as its underlying file storage system?

HDFS

Hadoop

Memory

MapReduce

84. Does the underlying data of HBase exist in the form of __?

keyvalue

Column storage

Row storage

Real-time storage

85. Regarding the relationship between Hive and other components of Hadoop, which of the following descriptions is wrong?

Hive finally stores the data in HDFS

Hive is a data warehouse tool for the Hadoop platform

HQL can perform tasks through MapReduce

Hive has a strong dependence on HBase

86. Which process is described in the Map stage shown in the figure below?

Partition

Sort

Spill/Merge

Combine

87. Zookeeper's scheme authentication method does not include which of the following?

sasl

auth

digest

world

88. Which module in Hadoop is responsible for HDFS data storage?

NameNode

Data Node

ZooKeeper

Job Traoker

89. Huawei Fusioninsight HD is the first big data platform in China that complies with the national financial level protection. What are the following aspects of its security?

System Security

Authority authentication

Data Security

All of the above are correct

90. Which of the following does not include the scheme authentication method of Zookeeper?

auth

sasl

digest

world

Page 10 of 15

91. When MRS Loader creates a job, what is the role of the connector?

Configure the connection method between the job and the external data source

Configure the connection method between the job and the internal data source

Provide optimization parameters to improve data import and export performance

Make sure there is a conversion step

92. Which of the following descriptions about Kafka partition offset is wrong?

Consumers track records through (offset, partition, topic)

Uniquely mark a message

offset is a string of type String

The position of each message in the file is called offset (offset)

93. Which application scenarios are HBase not suitable for?

High throughput application scenarios

Application scenarios that require full ACID characteristics

Semi-structured data application scenarios

Massive data (TB, PB) application scenarios

94. Among Fusioninsight HD products, which statement about Kafka is wrong?

Kafka strongly depends on Zookeeper

The number of instances deployed by Kafka must not be less than 2

The Kafka server can generate messages

Consumer acts as Kafka's client role to consume messages

95. In the operation process of Flink, the role responsible for applying for resources is?

Resource Manager

Job Manager

Client

Task Manager

96. Regarding the comparison between Hive and traditional data warehouses, which of the following descriptions is wrong?

Hive metadata storage is independent of data storage, thereby decoupling metadata and data, with high flexibility, while traditional data warehouses have single data applications and low flexibility

Hive is based on HDFS storage, theoretically, the storage capacity can be expanded infinitely, while the storage capacity of traditional data warehouses will have an upper limit

Since Hive data is stored in HDFS, it can guarantee high fault tolerance and high reliability of data

Since Hive is based on a big data platform, the query efficiency is faster than traditional data warehouses

97. What is the default resource scheduler for queues in YARN?

FIFO scheduler

Capacity Scheduler

Fair Scheduler

All of the above are correct

98. In Hadoop, if yarn.scheduler.capacity.root.QueueA.minimum-user-limit-percent is set to 50, which of the following statements is wrong?

A user submitting a task can use 100% of QueueA's resources

Each user in QueueA can only get up to 50% of the resources

If there are already 2 user tasks running in QueueA, the task submitted by the third user needs to wait for the release of resources

QueueA must guarantee that each user gets at least 50% of the resources

99. What is the file format of data storage in HBase?

HFile

HLog

TextFile

SequenceFile

100. Which of the following descriptions about Hive log collection on the Fusioninsight Manager interface is wrong?

Specific users can be designated for log collection, for example, only the logs generated by UserA are downloaded.

You can specify a time period for log collection, for example, only collect logs from 2016-1-1 to 2016-1-10.

You can specify an instance for log collection, such as specifying to collect metstore logs.

You can specify the node IP for log collection, for example, only download the logs of a certain I

Page 11 of 15

101. What is the resource management framework that comes with Spark?

Standalone

Mesos

YARN

Docker

102. Which command in Redis is to view the remaining lifetime of the key?

persist

expire

ttl

expired

103. Which of the following descriptions about the basic operations of Hive SQL is correct?

When loading data to Hive, the source data must be a path of HDFS

Creating an external table must specify location information

You can specify the column separator when creating the table

Create an external table using the external keyword. To create an ordinary table, you need to specify the internal keyword

104. In the copy placement strategy of HDFS, what is the distance between different servers in the same rack?

105. The following figure shows the configuration of HDFS hierarchical storage. If the number of copies of the block is 4, which of the following statements is wrong?

All 4 blocks will be written to RAM_DISK

If writing to other replicas other than the first replica fails, try to write to the storage type specified in "Alternative Storage Policy for Replicas"

The first block copy will be written to RAM_DISK, and the remaining copies will be written to DISK

If the first block copy fails to write to RAM_DISK, try to write to the storage type specified in the "alternative storage strategy"

106. In the MRS cluster, which of the following components does Spark mainly interact with?

Zookeeper

Yarin

Hive

HDFS

107. In many small file scenarios, Spark will start many tasks. When there is a Shuffle operation in the SQL logic, the number of hash buckets will be greatly increased, which will seriously affect the performance. In Fusioninsight, the () operator is usually used for small file scenarios to merge the partitions generated by the small files in the Table to reduce the number of partitions, so as to avoid generating too many hash buckets during shuffle and improve performance.

group by

coalosce

connection

join

108. Fusioninsight HD Manager interface Hive log collection, which option is wrong?

You can specify an instance for log collection, such as specifying to collect MetaStore logs separately

You can specify a time period for log collection, for example, only collect logs from 2016-1-1 to 2016-140

You can specify the node IP for log collection, for example, only download the log of a certain IP

You can specify a specific user for log collection, for example, only download the logs generated by userA

109. HDFS starts from version 2.7.3, what is the default Block Size?

32MB

128MB

64MB

16MB

110. FusionInsight Manager manages services, which of the following statements is wrong?

The service can be started, stopped and restarted

Can add and uninstall services

You can set unused services to hide or display

You can view the current status of the service

Page 12 of 15

111. Which object cannot be managed by Fusioninsight manager?

Spark

Host OS

YARN

HDFS

112. When planning a FusionInsight HD cluster, if the customer is used for functional testing and has no requirements for performance and cost savings, the management node, control node, and data node can be deployed in one. How many nodes are needed at least?

113. Fusioninsight Manager's statement about the configuration function of the service is wrong?

Service-level configurations can take effect for all instances

Instance-level configuration takes effect only for this instance

Instance-level configurations also take effect on other instances

After the configuration is saved, the service needs to be restarted to take effect

114. Which of the following commands deletes files?

dfs -clear

dfs -del

dfs -rm

dfs -Is

115. In the Fusioninsight HD system, which of the following methods cannot view the results of the Loader job execution?

Via the YARN task Richard Suga

Check through the Loader UI interface

View through the Manager's alarm

View through NodeManager

116. Which module is responsible for storing Fusioninsight Manager user data?

CAS

AOS

Kerberos

LDAP

117. Which of the following is wrong understanding of the BloomFilter feature of HBase?

Used to filter data

Used to optimize random read performance

It will increase storage consumption

It can be accurately judged that a piece of data does not exist

118. Which statement about DataNode of HDFS in Huawei Fusioninsight HD system is correct?

Does not check data validity

Periodically send Block related information of this node to NameNode

Blocks stored by different DataNodes must be different

Blocks on a DataNode can be the same

119. Which service process is used to manage the Region of HBase in the Hadoop platform?

HMaster

DataNodes

RegionServer

Zookeeper

120. On the Hadoop platform, what command is usually used to view the information of an application in the YARN service?

container

jar

application-attempt

Application

Page 13 of 15

121. The following figure shows the performance comparison data of Spark & MapReduce. It can be concluded that compared with MapReduce calculation, Spark uses ____ resources to obtain ____ times the performance?

1/8, 3

1/10, 3

1/10, 4

1/8, 4

122. What is the unit of data scale for traditional data processing?

123. The Fusioninsight HD cluster planned by a bank has 90 nodes. If three control nodes are planned, it is recommended to plan () data nodes in the cluster.

124. Which of the following descriptions about the characteristics of Zookeeper is wrong?

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

If a message is received by more than half of the servers, it will be successfully written to the disk

Message updates can only succeed or fail, there is no intermediate state

The number of Zookeeper nodes must be an odd number

125. The order in which the YARN scheduler allocates resources, which of the following descriptions is correct?

Any machine -> same rack -> local resources

Any machine -> local resource -> same rack

Local resources -> same rack -> any machine

Same rack -> any machine -> local resources

126. Regarding the task selection of the capacity scheduler, which of the following statements is correct?

Minimum queue level first

Resource reclamation request queue priority

Maximum Queue Level Priority

The queue with the lowest resource utilization is given priority

127. Regarding RDD, which of the following statements is wrong?

RDD has a lineage mechanism (Lineage)

RDD is stored on disk by default

RDD is a read-only, partitionable distributed dataset

RDD is Spark's abstraction of basic data

128. In the collaborative work of Zookeeper and YARN, when the Active Resource Manager fails, which of the following directories will the Standby Resource Manager obtain Application-related information?

warehouse

Meta store

State store

Storage

129. Assuming that the amount of data is about 200GB, and the maximum capacity of shards is limited to 30GB, what is the maximum number of shards that should be designed?

9 or 10

7 or 8

3 or 4

5 or 6

130. Which of the following statements about the read and write process of Zookeeper's Leader node after receiving a data change request is correct?

Write to disk and memory simultaneously

Write to disk first and then to memory

Write to memory only

Write to memory first and then to disk

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131. Which of the following descriptions about Zookeeper features is wrong?

The number of Zookeeper nodes must be an odd number.

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

Message update can only succeed or fail, there is no intermediate state.

A message must be received by more than half of the servers. It will be successfully written to disk

132. Which of the following commands downloads a directory/file from HDFS to the local?

dfs -cat

dfs -mkdir

dfs -get

dfs Cput

133. Which service process is the Region of HBase managed by?

DataNodes

ZooKeeper

HMaster

HRegionServer

134. Which way does ElasticSearch index data?

Forward Index

Full text indexing

Inverted index

Keyword index

135. Which of the following statements about the comparison between Sparkstreaming and Streaming is wrong?

SparkStreaming is a micro-batch processing framework, and events need to be processed when they are exhausted to a certain amount

The execution logic of Streaming is to start immediately and recycle after running

The throughput of SparkStreaming is about 2-5 times that of Streaming

SparkStreaming event processing delay is higher than Streaming

136. Which of the following options belong to the data storage model of Hive?

table

barrel

database

Partition

All above are correct

137. In the WebHCat architecture, which of the following operations can users perform through the secure HTTPS protocol?

Execute Hive DDL operations

Running MapReduce tasks

Run the Hive HQL task

All of the above are correct

138. In the Hadoop system, which statement about the client uploading files to the HDFS file system is correct?

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

The client divides the file into multiple blocks, and writes them to each DataNode in sequence according to the address information of the DataNode

The client writes the entire file to each DataNode in sequence according to the address information of the DataNode, and then the DataNode divides the file into multiple blocks

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

139. In the Fusioninsight HD system, which LDAP data synchronization method is used?

One-way synchronization

Two-way synchronization

Isolation is out of sync

Data cross synchronization

140. Which of the following is the correct step for row data conversion in Fusioninsight HD?

Load, Transform, Export

Input Setup, Conversion, Output

Load, Transform, Extract

Extraction, transformation, output

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141. Which of the following statements about the atomicity in the key features of ZooKeeper is correct?

Updates sent by the client will be applied in the order they were sent

The update can only complete or fail in full, not in part

A message received by one server will be received by all servers

No matter which server in the cluster, the same view is displayed externally

142. Which of the following are the characteristics of Huawei Kunpeng processors?

High-performance computing, high-performance Huawei Kunpeng processors compatible with ARM architecture and x86 architecture servers and solutions

Safe and reliable, creating a high quality that is as stable as Mount Tai

Open ecology, support mainstream software and hardware in the industry, and jointly create a new base for intelligent computing with developers, partners and industrial organizations

All of the above are correct

143. Which configuration does Fusioninsight Manager user rights management not support?

Assign roles to users

Configure permissions for roles

Configure roles for user groups

Configure permissions for user groups

144. The smallest processing unit of HBase is Region, where is the routing information between User Region and Region Server stored?

Zookeeper

HDFS

Master

meta table

145. Which of the following statements about the HBase secondary index is correct?

The secondary index associates the column to be searched with the rowkey into an index table

At this time, the new rowkey is listed, and the original rowkey becomes the value

The secondary index was queried twice

All of the above are correct

146. What is the role of the connector when Fusioninsight HD's Loader creates a job?

Determine what transformation steps are involved

Provide optimization parameters and provide data import and export performance

Configure how jobs connect to external data sources

Configure how jobs connect to internal data sources

147. In order to ensure the reliability of the snapshot storage of streaming applications, where are the snapshots mainly stored?

In the memory of the JobManager

In a stand-alone database with high reliability

In the local file system

In HDFS

148. RDD has Transformation and Action operators. Which of the following belongs to the Action operator?

reduceByKey

filter

map

saveAsTextFile

149. Hive is a hadoop-based data warehouse software that can query and manage PB-level distributed data.

Which of the following descriptions about Hive features is wrong?

Only supports MapReduce computing engine

Easy to use and easy to program

Can directly access HDFS files and HBase

Flexible and convenient ETL (extract/transform/load)

150. Which of the following types of data is not semi-structured data?

HTML

XML

Two-dimensional table

JSON

Great H13-711_V3.0 Dumps to Earn HCIA-Big Data Certification

Great H13-711_V3.0 Dumps to Earn HCIA-Big Data Certification

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