HCIA-Big Data V3.0
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Total Questions : 649
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The data node is the working node of HDFS. Which of the following are its functions? (multiple choice)
Which of the following scenarios in HBase will trigger the F1ush operation?
Which of the following are the characteristics of Streamingl?
A data is stored first and then calculated
B.
event drivenC.
low latencyD.
Can do continuous queryWhich components in the Fusioninsight HD platform support table and column encryption?
Which of the following options belong to the advantages of HUAWEI CLOUD MRS?
A Fusioninsight HD cluster contains multiple services, and each service consists of several roles. Which of the following are the roles of the service?
When the Hive service status is displayed as Bad on the Fusioninsight Manager interface, what are the possible reasons?
In the Fusioninsight product, which statement is correct about the Kafka component?
Which of the following statements about data management and architecture faced by traditional enterprises is correct?
Which of the followingOSWhich version is recommended for building a Fusioninsight V1R2C60 cluster?
Which of the following sub-products does the Fusioninsight family include?
Hadoop:When the scale of the cluster is large, the distribution of data will be very critical. Users need to decide whether to expand the cluster and whether the data needs to be balanced according to the data distribution. The following statements about Fusioninsight resource distribution monitoring are correct:
Which of the following data sources can realize data exchange with Fusioninsight HD through loader?
Compared with the open source Sqoop, what are the enhanced features of Loader
Which of the following functions can the Shell1 script of Loader achieve?
What can the unified certification management system of mainstream manufacturers consist of?
SELECT aa.salaryb
B.
address FROM employee aa JoiN SELECT adress FROM employee info where provine='zhejiang') What types of operations does bb ONaa.nanme=bB.
name contain?What are the main characteristics of big data analysis related technologies?
Which of the following components does the platform architecture of Huawei's big data solution include?
In Huawei Fusioninsight HD, which of the following components are strongly dependent on Flink?
In Kafka, the following statement about the data sent by the Producer is wrong
Which of the following options is a key feature of the HDFS architecture?
In Kafka HA, when the leader corresponding to the partition is down, a new leader needs to be elected from the followers. Which of the following roles should be executed?
Which of the following links is the data conversion operation of F1ink completed?
In the Fusioninsight HD product, which statement about Kafka is incorrect?
A user needs to build a FusionInsightHD cluster with 350 nodes. Which planning solution is the best?
In the YARN service, if you want to set the capacity of the queue QuqueA to 30%, which parameter should be configured?
Which of the following commands downloads directory files from HDFS to local?
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?
Which of the following is not a role or service involved in the process of reading data in HBasei?
In the Fusioninsight HD system, what is the LDAP data synchronization method?
In the Fusioninsight HD system, which of the following methods cannot view the execution result of the Loader job?
Which of the following options is correct about the meaning of Zookeeper reliability?
In the F1ink technical architecture,( )is a computing engine for stream processing and batch processing
Which configuration is not supported by Fusioninsight Manager user rights management?
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?
Which of the descriptions of the Loader job in FusionlnsightHD is correct?
F1ink in( )interface for streaming data processing,( )interface for batch processing?
When HBasel is deployed in a Fusioninsight HD cluster with N nodes, it is recommended to deploy( )HMasteri process,( )A RegionServeri process.
In YRAN's tag-based scheduling, which of the following options is tagged?
Fusioninsight Manager's statement about the configuration function of the service is incorrect?
Which statement is correct about the client uploading files to the HDF$ file system in the Hadoop system?
When installing the Streaming component of FusionlnsightHD, the Nimbus role requires several nodes to be installed
When the Loader of Fusioninsight HD creates a job, what is the function of the connector?
Which parameter needs to be configured to enable the log aggregation function of the YARN component in the Hadoop platform?
How many blocks are saved in HDFS by default in the FusionlnsightHD system?
Streaming:Event listening is mainly implemented through which of the following services provided by Zookeeper?
The size of the memory allocated by YARN to Containerb in the Hadoop system, which can be set by the parameter yarn.app.mapreduceam.resource.mb
In the MRS service, the unavailability of the Zookeeper service will result in the unavailability of the kafka service.
HiveServer compiles and parses HQL statements submitted by users into corresponding Yarm tasks, Spark tasks or HDPS operations, thereby completing data extraction, conversion, and analysis.
All messages in Kafka will be persisted to the hard disk. At the same time, Kafka ensures data reliability by setting Replication to Topic Partitio.
Which of the following operations cannot be recorded in the Fusioninsight HD system audit log?
Fl?Me is akind of distributed. highreliable and highavailableofClothesservice. useto be effectivecompare?,polymerization?Move a lot of logs? ?.
On the FusionInsight Manager interface, when a warning about insufficient kafka wipe disk capacity is received, and the cause of the warning has been eliminated from the hard disk hardware failure, the system administrator needs to consider expanding the capacity to solve this problem.
Assuming that HDFS only saves 2 copies when writing data. Then during the writing process, HDFS Client first writes data to DataNodel1 and then writes data to DataNode2.0
It is used to record the message reading position in Kafka (fill in the blank)
kafka Distributed message delivery is based on reliable message queues. Which of the following two main message delivery patterns are included?
Kerberos can only provide security authentication for services within the cluster.
By configuring which of the following parameters can the logs generated in Kafkal be cleaned up?
The data stream of F1ume can be sent to different Channels according to the headers information.
When a certain task of MapReduce fails, the task can be recalculated through the retry mechanism.
Spark Streaming computing is based on DStream, which decomposes streaming computing into a series of short batch jobs.
In the HDFS mechanism, NameNodet is responsible for managing metadata. Each read request on the Clienty side needs to read metadata information from the metadata disk of NameNode, so as to obtain the location of the read file in DataNodel.
Among the Kerberos service roles, KerberosServer mainly provides authentication functions, and KerberosAdmin mainly provides user management functions.
Hive is a data warehouse processing tool that uses the SQL-like HiveQL language to implement data query functions. All Hive data is stored in HDFS.
Flink supports Localt mode and Clustert mode deployment. Other modes are not supported at the moment.
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.
Huawei has extensive experience in big data solutions in various industries such as finance, public security, railways, and government affairs.
TESTED 02 May 2024
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