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H13-711_V3.0 Sample Questions Answers

Questions 4

Spark is a memory-based computing engine. All Sparki program data in the running process can only be stored in memory

Options:

A.

True

B.

False

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Questions 5

The most basic unit of HBase's distributed storage is Region.

Options:

A.

True

B.

False

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Questions 6

The following provides a variety of Redist optimization practices, which option is wrong?

Options:

A.

closecloseTransparent Huge Pages

B.

Modify the minimum number of tcp connections in 1linux

C.

Modify the linux kernel memory allocation strategy or execute sysctl

D.

Condensed key names and key values

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Questions 7

In order to consider performance optimization, it is recommended to deploy LdapServeri and KrbServer on the same node in all clusters.

Options:

A.

True

B.

False

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Questions 8

HDFSmiddle,piece(BlocThe size of k) is much larger than the smallest singleYuan,can be minimalchangeSearchingsiteout of the box.

Options:

A.

TRUE

B.

FALSE

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Questions 9

Redis adopts a non-central self-organizing structure. Nodes use the Gossip protocol to exchange node status information.

Options:

A.

TRUE

B.

FALSE

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Questions 10

When the Hive service status is displayed as Bad on the Fusioninsight Manager interface, what are the possible reasons?

Options:

A.

DBService is unavailable

B.

HDFS service unavailable

C.

MetaStore instance unavailable

D.

HBase service unavailable

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Questions 11

What processes are included in the HBase service of Fusioninsight HD?

Options:

A.

HMaster

B.

Slave

C.

HRegionServer

D.

Data Node

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Questions 12

Which of the following destinations can Fusioninsight HD Loader export HDFS data to?

Options:

A.

SFTP server

B.

FTP server

C.

Oracle Database

D.

DB2 database

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Questions 13

The topology will automatically end running after the task is completed.

Options:

A.

True

B.

False

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Questions 14

ElWhat processing capabilities does asticSearch have for structured, semi-structured, and unstructured data?

Options:

A.

to enterA series of operations such as line cleaning, word segmentation, and establishment of an inverted index

B.

Provides the ability to search full text, conditions can include words or phrases

C.

The written data can be checked in real timeSow

D.

numberOptional rewrite when data is writtendeleteand compression function

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Questions 15

In the Fusionlnsight HD product, a typical Kafka cluster contains several Producers, several Borkers, several Consumers and a Zookeeper cluster

Options:

A.

True

B.

False

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Questions 16

Flink provides built-in state management that canput at workstatesave atFlin1k internal,AgainNo need to store it in an external systemsystem. SuchThe benefits include which of the following options

Options:

A.

achieved highswallowspit, high sexual characteristics, but unable toDoarrive?extendlate guarantee

B.

Ensure data consistency during processing

C.

droplowcomputing engineDependence on external systems makeshave to deploy, operation and maintenance is simpler

D.

on performancebeltcame greatpromote

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Questions 17

Which of the following scenarios are not good at Flink components?

Options:

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Questions 18

HDFSSupport through the followingwhich visitsway to visitAsk for data?

Options:

A.

HIIP

B.

Shall

C.

S3

D.

JAVA API

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Questions 19

Which of the following are the actual application scenarios of Kafka

Options:

A.

log collection

B.

Site activity tracking

C.

Resource management

D.

Aggregate statistical system operation data

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Questions 20

HiveThe operation process includes the following steps, please select the correct oneorder

1:HiveAccording to table classtypeUpdate HDFS or Hivedata in warehouse.

2:Client submits HQL command

3:YARNAllocate resources to applications in the cluster,andfor YARNH in the queueiveThe job enables authorization.

4: Tezexecute query

5:Hive via JDBCevencatchreturncheckquery result.

Options:

A.

21435

B.

21345

C.

24135

D.

24315

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Questions 21

In the Fusioninsight HD system, if dirty data is generated while the Loader job is running, the status of the Loader job execution result must be failed.

Options:

A.

True

B.

False

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Questions 22

MapReduceprocess, by default,oneEach shard is a block, andYesOneMap Tasks.

Options:

A.

TRUE

B.

FALSE

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Questions 23

During data stream processing,frequently used systemtimebetween(proceessing time)dofor an eventbetween. About Processing TimeWhich item is described incorrectly?

Options:

A.

Processing TimeIt is suitable for scenarios with complex processing problems and high requirements for adjustable results.

B.

Processing Timeexists betweenThe main reason for the difference is due to grid extensionLate, long processing time?Waitmakecompleted

C.

Processing Time results are not reproducible, once stream computingVersionupgradeEven the system crashes, computing?will stop

D.

In the actual application process, Processing Timeto be behindwith event time

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Questions 24

In the task scheduling of YARN. Once the ApplicationMasterE applies for the resource, it communicates with the corresponding ResourceManagerj and asks it to start the task

Options:

A.

True

B.

False

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Questions 25

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

Options:

A.

Partition

B.

Sort

C.

Spill/Merge

D.

Ccombine

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Questions 26

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

Options:

A.

HDFS

B.

Hadoop

C.

Memory

D.

MapReduce

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Questions 27

When a Regioni in HBaser performs the Split operation, what stage occurs in the process of actually dividing an HFile file into two Regions?

Options:

A.

During Spliti

B.

During Flush

C.

ompactionj process

D.

HFile separation process

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Questions 28

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

Options:

A.

Switch the active and standby Loader nodes

B.

Start the loader instance

C.

Configure loader parameters

D.

View loader service status

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Questions 29

Which of the following statements about ZKFC is wrong?

Options:

A.

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

B.

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

C.

Standby NameNodej perceives the status of Active NameNodel through Zookeeper. Once the Active NameNode is down, the Standby NameNode will perform the main upgrade operation.

D.

The ZKFC of HDFS NameNodel connects to Zookeeper, and saves the host name and other information in Zookeeper

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Questions 30

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

Options:

A.

HTML

B.

XML

C.

two-dimensional table

D.

JSON

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Questions 31

In the WebHCat architecture, which of the following operations can users perform over the secure HTTPS protocol

Options:

A.

Perform Hive DDL operations

B.

Run MapReduce tasks

C.

Run Hive HQL task

D.

everything aboveA. True

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Questions 32

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

Options:

A.

Zookeeper

B.

Yarin

C.

Hive

D.

HDFS

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Questions 33

When planning a FusionlnsightHD cluster, if the customer does not have performance requirements for functional testing and saves costs, the management node, control node, and data node can be deployed together. How many nodes are required at least?

Options:

A.

2

B.

3

C.

4

D.

5

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Questions 34

Which of the following options does the main role of Zookeeper in distributed applications not include?

Options:

A.

Election of Master Nodes

B.

Ensure data consistency on each node

C.

Allocate cluster resources

D.

Store server information in the cluster

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Questions 35

Which of the descriptions of the Loader job in FusionlnsightHD is correct?

Options:

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.

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Questions 36

RowKey of a table in HBase:Divide the SplitKey into 9, e, a, z. How many Regions does this table have?

Options:

A.

3

B.

4

C.

5

D.

6

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Questions 37

Which of the following descriptions about Hive log collection on the Fusioninsight Manager interface is incorrect?

Options:

A.

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

B.

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

C.

You can specify an instance for log collection, for example, specify to collect metstore logs.

D.

The node IP can be specified for log collection, for example, only the logs of a certain IP can be downloaded.

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Questions 38

In order to improve the fault tolerance of Kafka, Kafka supports the replication strategy of partition. Which of the following descriptions about Leader partition and Follower partition is wrong?

Options:

A.

It is impossible for each node of a kafka cluster to be l with each othereader and flower

B.

If the leader fails, other followers will take over (become the new leader)

C.

Because the leader server carries all the request pressure. Therefore, from the overall consideration of the cluster, kafka will distribute the leader evenly on each instance to ensure the overall performance is stable

D.

Kafka needs to select a leader for partition replication, and the leader is responsible for reading and writing partitionsD. operation, other replica nodes are only responsible for data synchronization

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Questions 39

Which of the following descriptions about Fusioninsight CTBase is incorrect?

ACTBase's read and write data interface. It uniformly encapsulates the interface defined by the line, and automatically merges and parses cold fields without merging and interpretation in the application.

B. CTBase is a cluster table development framework based on HBasel

C. CTBase provides a set of WebUI for metadata definition,Provides a medical-only watch design tool to reduce the difficulty of watch design

D. CTBase's java API provides a set of interfaces for HBasej connection pool management. Internal connection sharing is performed to reduce the difficulty of client application development.

Options:

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Questions 40

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

Options:

A.

persist

B.

expire

C.

ttl

D.

expireat

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Questions 41

Which service process manages the HBasel Region in the Hadoop platform?

Options:

A.

HMaster

B.

DataNode

C.

RegionServer

D.

Zookeeper

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Questions 42

In the Kafka cluster, the role of the Kafka server is

Options:

A.

Producer

B.

Consumer

C.

Zookeeper

D.

Brocker

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Questions 43

A user information table meg is saved in HBaser of Fusioninsight HD_table, Rowkey is the user id, one of which is the name of the user, now write three KeyValues to this column in sequence:001:Li, 001:Mary001:Lily, may I ask scanmeg_table', (VERSION=>2) which pieces of data will be returned?

Options:

A.

001:Lily

B.

001:Li

C.

001:Mary, 001:Lily

D.

001:Li, 001:Mary, 001:Lily

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Questions 44

Existing server.channelsa=ch1, set the Channel type to File Channel, which of the following configurations is correct?

Options:

A.

server.channels.ch1.type file

B.

server.channels.chl.type memory

C.

server.channels.type memory

D.

server.channels.type file

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Questions 45

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

Options:

A.

3, N

B.

N, N

C.

2, N

D.

2.2

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Questions 46

When planning and deploying a Fusionlnsight cluster, it is recommended that the management node be best deployed( ), the control node needs to be deployed at least( )Piece,Data nodes need to be deployed at least( )Piece.

Options:

A.

1.2, 2

B.

1, 3, 2

C.

2, 3, 1

D.

2, 3, 3

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Questions 47

Which way is incorrect to load data into Hive table?

Options:

A.

Load the file of the local path directly into the Hive table

B.

Load the files on HDFS into the Hive table

C.

Hive supports insert into! Single record method, so you can insert a single record directly on the command line

D.

Insert result sets from other tables into Hive tables

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Questions 48

In the Fusioninsight product, which of the following descriptions about kafka's topicl is incorrect?

Options:

A.

The number of Topic partitions can be configured when creating

B.

Each topic can only be divided into one partition area

C.

Each message published to kafka has a category, which is called topic and can also be understood as a queue for storing messages

D.

Each partition corresponds to a log file at the storage level, and the log file records all message data

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Questions 49

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

Options:

A.

name

B.

connect

C.

type

D.

priority

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Questions 50

Which of the following is not a characteristic of the MapReduce component in Hadoopl?

Options:

A.

easy to program

B.

good scalability

C.

real-time computing

D.

High fault tolerance

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Questions 51

Which of the following options cannot be achieved through big data technology?

Options:

A.

business model discovery

B.

value for evaluation

C.

Products Featured

D.

Operational Analysis

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Questions 52

Regarding RDD, which of the following statements is wrong?

Options:

A.

RDD has a lineage mechanism (Lineage)

B.

RDDs are stored on disk by default

C.

RDD is a read-only, partitionable distributed dataset

D.

RDD is Spark's abstraction of underlying data

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Questions 53

In YRAN's tag-based scheduling, which of the following options is tagged?

Options:

A.

APPMaster

B.

ResourceManager

C.

Container

D.

NodeManager

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Questions 54

What is the data scale unit of traditional data processing?

Options:

A.

TB

B.

EB

C.

PB

D.

GB

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Questions 55

What is the file format of data storage in HBase?

Options:

A.

HFile

B.

HLog

C.

TextFile

D.

SequenceFile

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Questions 56

Which of the following is the ElasticSearch node?

Options:

A.

EsNode

B.

Index

C.

EsMaster

D.

Cluster

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Questions 57

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

Options:

A.

reduceByKey

B.

filter

C.

map

D.

saveAsTextFile

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Questions 58

When the F1ume process is cascaded, which of the following sink types are used to receive the messages sent by the previous hop Flume?

Options:

A.

Avro sink

B.

Thrift sink

C.

Hive sink

D.

Null sink

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Questions 59

Which of the following statements about atomicity in Zooeeper's key features is correct?

Options:

A.

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

B.

Updates can only be fully completed or failed, not partially

C.

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

D.

No matter which server in the cluster, the same view is displayed to the outside world

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Questions 60

What can the unified certification management system of the new mainstream merchants consist of?

Options:

A.

Unified Authentication Server

B.

Unified authentication management module

C.

Tingyi Security Management Module

D.

Identity information storage server

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Questions 61

What are the main features of HBase?

Options:

A.

High reliability

B.

high performance

C.

column oriented

D.

adjustable

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Questions 62

What are the performance bottlenecks of traditional data processing?

Options:

A.

High cost of data storage

B.

Insufficient streaming data processing performance

C.

Limited scalability

D.

Batch data processing is missing

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Questions 63

The following descriptions about FusionInsight multi-tenant management are correct

Options:

A.

One-stop management of tenant resources, computing resources (CPU/memory/IO), storage resources (HDFS), service resources (HBase.…)

B.

Visual multi-level tenant management, matching with the enterprise organizational structure, simplifies system resource allocation and management

C.

Tenant resource isolation based on container mechanism, escorting tenant SLA

D.

A multi-level tenant model that matches the organizational structure of the enterprise, different departments correspond to different tenants, and tenants can be dynamically added or deleted as needed

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Questions 64

The compatibility of F1ink is reflected in which of the following aspects?

Options:

A.

Can be mixed with Hadoop's original mappers and reducers

B.

YARN can be used as a resource scheduling manager for Flink clusters

C.

Ability to use Hadoop formatted input and output

D.

Ability to get more data from local

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Questions 65

The overall process of Kafka Produceri reading data is that the Producer connects to any surviving Broker, requests the leader metadata information of the specified topic and partition, and then directly connects with the corresponding Brokerl to publish the data.

Options:

A.

True

B.

False

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Questions 66

In the MRS interface, Loader can specify a variety of different data sources, configuration data cleaning and conversion steps, and configure cluster storage systems, etC. .

Options:

A.

TRUE

B.

FALSE

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Questions 67

Huawei has extensive experience in big data solutions in various industries such as finance, public security, railways, and government affairs.

Options:

A.

True

B.

False

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Questions 68

About RDDs. Which of the following statements is false?

Options:

A.

RDD is a read-only, partitionable distributed dataset

B.

RDD is Spark's abstraction of underlying data

C.

RDDs have a lineage mechanism (Lineed)

D.

RDDs are stored on disk by default

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Questions 69

HiveManaged tables and external tables can be created, which of the following descriptions is correct for both types of tables?

Options:

A.

When using managed tables, perform DROWhen P operates,just delete the originaldata

B.

When using an external table, metadata and data are combined when performing a DROP operationdelete

C.

When using an external table, when performing a DROP operation, onlydeletemetadata

D.

When using managed tables, execute DRWhen the OP operates, the metadata and data will bedelete

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Questions 70

Similar to Spark Streaming, Flink is an event-driven real-time streaming system

Options:

A.

True

B.

False

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Questions 71

In the Fusioninsight HD product, a typical kafka cluster contains several producers, thousands of consumers and a zookeeper cluster?

Options:

A.

True

B.

False

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Questions 72

When a MapKeduce program runs, the Map? ?malfunction. Which of the following options describe this task correctly?

Options:

A.

AppMacter no longer starts

B.

App Marter starts again

C.

The task stops immediately

D.

The task can still be run

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Questions 73

HashThe value of type stores the mapping of fields and field values, and fields and field values can only be( )

Options:

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Questions 74

kafka Distributed message delivery is based on reliable message queues. Which of the following two main message delivery patterns are included?

Options:

A.

distributiondelivery mode

B.

pollinghand overmodel

C.

to sendcloth subscription model

D.

point-to-point speedmoldMode

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Questions 75

Elastic SearchofSowleadCanbystoragein a variety ofstorage classtype,andthe followingwherekind of storagekindtypebranchhold?

Options:

A.

Shared file system

B.

Object Storage

C.

HDFS

D.

Local file system

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Questions 76

When Solr creates CollectionE, it is recommended to select the routing algorithm as compositld Router, then the Collection can expand shard.

Options:

A.

True

B.

False

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Questions 77

About HDFSThe function of the NameNode, which one of the following descriptions is wrong?

Options:

A.

for storing metadata

B.

Save the mapping relationship between file blocks and DataNodes

C.

MaintenanceThe mapping relationship between Block ID and DataNode local file

D.

Store file content

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Questions 78

What are the functions of Nimbus in the Streaming architecture?

Options:

A.

Monitor task execution status

B.

task scheduling

C.

start/stop worker process

D.

Resource allocation

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Questions 79

What are the following main functions of FusionInsightManager?

Options:

A.

data integration

B.

System Management

C.

safety management

D.

Service Governance

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Questions 80

As shown in the figure, which of the following options are wide dependencies

Options:

A.

group by A->B

B.

map:C->D

C.

union D&E->F

D.

join B&F->G

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Questions 81

What data does FusionInsightManager regularly back up?

Options:

A.

NameNode

B.

LDAPServer

C.

OMS

D.

DBService

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Questions 82

What kinds of Kafka message transmission guarantees are usually provided?

Options:

A.

At Most Three Times

B.

Exactly Once

C.

At least once (At Lease once)

D.

At Most once

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Questions 83

The streaming client shell command in the FusionInsight HD system fails to view the topology or submit the topology. Which of the following positioning methods are correct?

Options:

A.

Check the Supervisori running log to determine whether the Supervisor is abnormal

B.

View worker running logs

C.

View the client exception stack to determine whether the client is using the problem

D.

Check the running log of the main nimbus to determine whether the nimbus server is abnormal

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Questions 84

In the Output stage, Structured Streaming can define different data writing methods, including which of the following methods?

AAppend Mode

B. Update Mode

C. General Mode

D. Ccomplete Mode

Options:

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Questions 85

Which parts of the data need to be read to execute the HBase data reading business?

Options:

A.

HLog

B.

MemStore

C.

HFile

D.

HMaster

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Questions 86

Which of the following statements about segment file in Kafka Logs is correct?

Options:

A.

Mapping all index metadata to memory can avoid index data IO disk operations of segmentfile

B.

The index file is sparsely stored, which can greatly reduce the space occupied by the metadata of the index file

C.

Sparse storage, that is, to store the original complete data only at intervals

D.

Message can be quickly located through index information

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Questions 87

Which is not the channel type of Flume

Options:

A.

Memory Channel

B.

File Channel

C.

JDBC Channel

D.

HDES Channel

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Questions 88

Are the following descriptions correct about the HBase file storage module (HBase FileStream, HFS for short)?

Options:

A.

Applied in the upper layer of Fusioninsight HD

B.

HFS encapsulates the interface between HBase and HDFS

C.

Provide functions such as file storage, reading, and deletion for upper-layer applications

D.

HFS is a separate module of HBase

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Questions 89

The following cloud search service CSSIs the description correct?

Options:

A.

The expansion of nodes and disk services is not interrupted, and the update thesaurus service is not interrupted.

B.

Compatible with Elasticsearch APIs

C.

Does not support the fusion search of rich text and text such as voice

D.

Level data retrieval returns in seconds, billion-level 100-dimensional star retrieval returns in seconds

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Questions 90

Which of the following functions can the kafka-clustermirroring tool implement?

Options:

A.

Kafka cluster data synchronization scheme

B.

Kafka data backup in a single cluster

C.

Kafka data recovery in a single cluster

D.

to all wrong

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Questions 91

Hive is a data warehouse software based on hadoopE, which can query and manage PB-level distributed data. Which of the following descriptions about Hive features is incorrect?( )

Options:

A.

Only supports MapReduce computing engine

B.

Easy to use and easy to program

C.

Direct access to HDFS files and HBase

D.

Flexible and convenient ETL (extract/transform/load)

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Questions 92

What are the storage formats supported by Hive?

Options:

A.

TextFile

B.

RCFile

C.

Parquet

D.

SequenceFile

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Questions 93

HDFS of HadoopE is a distributed file system. Which of the following application scenarios is suitable for data storage and management?

Options:

A.

Lots of small file storage

B.

High capacity and high leaf swallowing capacity

C.

low latency read

D.

Streaming data access

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Questions 94

Which of the following options is a key feature of the HDFS architecture?

Options:

A.

robust mechanism

B.

multiple access mechanism

C.

HA high reliability

D.

Metadata Persistence Mechanism

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Questions 95

What services can Huawei MRS provide to customers?

Options:

A.

Multi-node deployment

B.

Statistical analysis and data mining

C.

Security Control Based on Kerberosi Certificate

D.

Offline and real-time data processing

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Questions 96

To enable the log aggregation function of the Yam component in the Hadoop platform, which parameter needs to be configured?

Options:

A.

yarn.nodemanager.local-dirs

B.

yarn.nodemanager.log-dirs

C.

yarn.acl.enable

D.

yarn.log-aggregation-enable

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Questions 97

Which of the following functions can the Shell1 script of Loader achieve?

Options:

A.

View job status

B.

start job

C.

stop job

D.

Data source query

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Exam Code: H13-711_V3.0
Exam Name: HCIA-Big Data V3.0
Last Update: Mar 24, 2024
Questions: 649
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