Huawei H13-711_V3 0-ENU Exam Dumps

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H13-711_V3.0-ENU
Exam Name: HCIA-Big Data V3.0
Full version: 500 Q&As
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1. What are the key features of Streaming in Huawei's big data product Fusioninsight HD?
(Multiple choice)
A. Flexibility
B. Scalability
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C. Disaster tolerance
D. Message reliability
Answer: ABCD
2. In Hive, which of the following descriptions about partitions is wrong?
A. There can be partitions or buckets under the partition
B. The data table can be partitioned according to the value of a field
C. Each partition is a directory
D. The number of partitions is fixed
Answer: D
3. In Zookeeper's service model, the Leader node exists in active/standby mode, and the other
nodes belong to the Follower nodes.
A. True
B. False
Answer: B
4. Which of the following descriptions about the HBase storage model is correct? (Multiple
choice)
A. Each KeyValue has a Qualifier logo
B. The same key value key is associated with multiple values
C. KeyValue has key information such as timestamp and type
D. Even if there are multiple KeyValues with the same key value and the same Qualifier, there
may be multiple KeyValues. At this time, time stamps are used to distinguish
Answer: ABCD
5. As a distributed message system, Kafka supports online and offline message processing,
and provides a java API for other components to connect and use. In the Fusioninsight solution,
Kafka belongs to the Fusionlnsight HD module.
A. True
B. False
Answer: A
6. What is the role of the connector when Fusioninsight HD's Loader creates a job?
A. Determine what transformation steps are involved
B. Provide optimization parameters and provide data import and export performance
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C. Configure how jobs connect to external data sources
D. Configure how jobs connect to internal data sources
Answer: C
7. Hive is a data warehouse infrastructure built on Hadoop. It provides a set of tools that can be
used to extract, transform and load (ETL), which is a mechanism for storing, querying and
analyzing large-scale data stored in Hadoop.
A. True
B. False
Answer: A
8. Which application scenarios are HBase not suitable for?
A. High throughput application scenarios
B. Application scenarios that require full ACID characteristics
C. Semi-structured data application scenarios
D. Massive data (TB, PB) application scenarios
Answer: B
9. In the HDFS mechanism, the NameNode is responsible for managing metadata. Each read
request on the client side needs to read metadata information from the metadata disk of the
NameNode to obtain the location of the read file in the DataNode.
A. True
B. False
Answer: A
10. server.channels.ch1.transactioncapacity indicates the transaction size, that is, the number
of events that the current channel supports transaction processing, which can be set to the
same size as the batch size of the source, but cannot be smaller than the batch size.
A. True
B. False
Answer: A
11. The data flow of Flume can be sent to different Channels according to the information of
headers.
A. True
B. False
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Answer: A
12. Flink has no restart strategy.
A. True
B. False
Answer: B
13. The shards index fragmentation of ElasticSearch can break up and distribute index data to
different nodes.
A. True
B. False
Answer: A
14. A KeyValue format in the data file HFile of HBase contains Key, Value, TimeStamp,
KeyType, etc.
A. True
B. False
Answer: A
15. Which of the following statements about Transformation in Flink is correct? (Multiple choice)
A. You can set the time window through the window
B. The Filter operation is to perform a Boolean function on each element
C. FlatMap can segment text
D. KeyBy is to group the source data according to the key to ensure that the metadata of the
same key are divided into the same group
Answer: ABD
16. Which of the following functions can the Shell script of Loader achieve? (Multiple choice)
A. View job status
B. Start the job
C. stop working
D. Data source query
Answer: ABCD
17. In the Loader of Fusioninsight HD, one connector can only be assigned to one job.
A. True
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B. False
Answer: B
18. On the Fusioninsight HD platform, HBase does not currently support secondary indexes.
A. True
B. False
Answer: B
19. What interfaces does Fusioninsight Manager support when connecting with external
platforms? (Multiple choice)
A. SNMP
B. VPN
C. BGP
D. Syslog
Answer: AD
20. Which of the following descriptions about Kafka partition offset is wrong?
A. Consumers track records through (offset, partition, topic)
B. Uniquely mark a message
C. offset is a string of type String
D. The position of each message in the file is called offset (offset)
Answer: C
21. Fusioninsight HD system audit log is unavailable to record which of the following
operations?
A. Clear warnings manually
B. Start and stop the service instance
C. Delete service instance
D. Query History Monitoring
Answer: D
22. Which of the following options belong to Fusioninsight data security? (Multiple choice)
A. Operating system security hardening
B. Component Data Encryption
C. Data integrity check
D. User rights authentication management
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Answer: BC
23. Which of the following is not a mandatory option when creating a Loader job?
A. name
B. connection
C. type
D. Priority
Answer: D
24. Flink supports Local mode and Cluster mode deployment, and other mode deployments are
not currently supported.
A. True
B. False
Answer: B
25. When importing data into the Hive table, the legality of the data will not be checked, but only
when the data is read.
A. True
B. False
Answer: A
26. Among the following options, which are the processes that MapReduce must have?
(Multiple choice)
A. Combine
B. Map
C. Reduce
D. Partition
Answer: BCD
27. Which of the following statements about the atomicity in the key features of ZooKeeper is
correct?
A. Updates sent by the client will be applied in the order they were sent
B. The update can only complete or fail in full, not in part
C. A message received by one server will be received by all servers
D. No matter which server in the cluster, the same view is displayed externally
Answer: B
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28. In Fusioninsight HD, which of the following is not a Hive flow control feature? (Multiple
choice)
A. Support threshold control on the total number of established connections
B. Support threshold control on the number of connections established by each user
C. Support threshold control on the number of connections established by a specific user
D. Support threshold control on the number of connections established per unit time
Answer: ABD
29. Which of the following commands can clear the data of all databases under the Redis
instance?
A. dropall
B. flushall
C. flushdb
D. dropdb
Answer: B
30. What processes does the HBase service of Fusioninsight HD contain? (Multiple choice)
A. HMaster
B. Slave
C. HRegionServer
D. Data Node
Answer: AC
31. In Streaming, exactly one message reliability level is achieved through the ACK mechanism.
A. True
B. False
Answer: B
32. Which of the following statements about Zookeeper's Leader election is correct? (Multiple
choice)
A. When the number of instances n is an odd number, assuming n=2x+1, then x+1 votes are
required to become a leader node
B. When Zookeeper elects the leader, more than half of the votes are required
C. When the number of instances is 8, 5 votes are required to become the leader node, and the
disaster recovery capacity is 4
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D. When the number of instances n is an odd number, assuming n=2x+1, x votes are required
to become a leader node
Answer: AB
33. What information does a KeyValueformat contain in the data file HFile of HBase? (Multiple
choice)
A. Key
B. Value
C. Timestamp
D. KeyType
Answer: ABCD
34. The Hadoop-based open source big data platform mainly provides distributed computing
and storage capabilities for data. Which of the following are distributed storage components?
(Multiple choice)
A.MR
B. Spark
C.HDFS
D. HBase
Answer: CD
35. Which of the following statements about the read and write process of Zookeeper's Leader
node after receiving a data change request is correct?
A. Write to disk and memory simultaneously
B. Write to disk first and then to memory
C. Write to memory only
D. Write to memory first and then to disk
Answer: B
36. During operation, the Kafka cluster directly depends on which of the following components?
A. Zookeeper
B. HDFS
C. Spark
D. HBase
Answer: A
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37. During the data transmission process of Flume, after the Sink takes the data and writes it to
the destination, it will delete the events from the channel.
A. True
B. False
Answer: A
38. Regarding Flume, which of the following statements is wrong? (Multiple choice)
A. Data transmission between Flume cascade nodes supports encryption
B. Flume supports multi-cascading and multiplexing
C. It is necessary to encrypt inside the process from Source to Channel to Sink
D. Data transmission between Flume cascade nodes does not support compression
Answer: CD
39. Which of the following installation process of Fusioninsight HD is correct?
A. Install Manager->execute preinstall->LLD tool to configure->install cluster->check after
installation->configure after installation
B. Configure with LLD tool -> Execute preinstall -> Install Managers -> Install cluster -> Check
after installation -> Configure after installation
C. Install Manager->LLD tool to configure->execute preinstall->install cluster->check after
installation->configure after installation
D. LLD tool for configuration -> execute preinstalls -> install cluster -> install Manager -> check
after installation -> configure after installation
Answer: B
40. In the FusionInsight Hadoop cluster, the cluster scale has 70 nodes. If the recommended
deployment scheme is adopted, what partitions may exist on the management node? (Multiple
choice)
A. /srv/BigData/zookeeper
B. /srv/BigData/dbdata-om
C. /srv/BigData
D. /srv/BigData/jumalnode
E. /srv/BigData/hadoop/data5
Answer: ABCD
41. 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,
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and data node can be deployed in one. How many nodes are needed at least?
A.2
B.3
C.4
D.5
Answer: B
42. Which of the following can be viewed in the Loader historical job records? (Multiple choice)
A. Job Status
B. Job start/run time
C. Dirty Data Links
D. Number of Error Lines/Files
Answer: ABCD
43. Regarding DataSet, which of the following statements is wrong?
A. DataSet is a strongly typed collection of domain-specific objects
B. DataSet can perform most operations without deserialization
C. DataSet performs sort, filter, shuffle and other operations that need to be deserialized
D. DataSet is highly similar to RDD, and its performance is better than RDD
Answer: C
44. It is used to record the reading position of the message in Kafka ().
Answer: log files
45. TaskSlot in Flink is mainly used for resource isolation, including memory resources and
CPU resources.
A. True
B. False
Answer: B
46. Which of the following descriptions about FusionInsight multi-tenant management is correct?
(Multiple choice)
A. One-stop management of tenant resources, computing resources (CPU/memory/IO), storage
resources (HDFS), service resources (HBase...)
B. Visual multi-level tenant management, which matches the organizational structure of the
enterprise and simplifies system resource allocation and management
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C. Isolation of tenant resources based on container mechanism to protect 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.
Answer: ABCD
47. What is the meaning of this command "ALTER TABLEemployee1ADDcolumns
(columnlstring);" in Hive?
A. Drop table
B. Add columns
C. Create table
D. Modify the file format
Answer: B
48. What does Fusioninsight HD HBase use by default as its underlying file storage system?
A. HDFS
B. Hadoop
C. Memory
D. MapReduce
Answer: A
49. Which of the following options are the key features of Zookeeper? (Multiple choice)
A. Atomicity
B. Eventual consistency
C. Wait for irrelevance
D. Reliability
Answer: ABCD
50. Normally, tables stored in text files in Hive use carriage returns as their line separators. In
Huawei Fusioninsight Hive, you can specify the input and output format processing classes for
table data.
A. True
B. wrong
Answer: A
51. RDD has Transformation and Action operators. Which of the following belongs to the Action
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operator?
A. reduceByKey
B. filter
C. map
D. saveAsTextFile
Answer: D
52. Huawei Cloud MapReduce service provides a one-stop enterprise-level big data cluster
cloud service that is fully controllable by tenants. The flexible and easy-to-use full-stack big data
platform can easily run Hadoop, Spark, HBase, Kafka, Storm and other big data components,
realize real-time and offline analysis and mining, and discover new business opportunities.
A. True
B. False
Answer: A
53. In Fusionlnsight HD, which of the following components does Flink mainly interact with?
(Multiple choice)
A. zookeeper
B. HDFS
C. Kafka
D. Yarn
Answer: ABCD
54. What is the purpose of the HBase cluster regularly executing Compaction? (Multiple choice)
A. Reduce the number of files under the same ColumnFamily in the same Region
B. Reduce the number of files in the same Region
C. Improve data reading performance
D. Improve data writing ability
Answer: ACD
55. What are the main functions of Fusioninsight Manager? (Multiple choice)
A. Security management
B. Data Integration
C. System plumbing
D. Service Governance
Answer: ACD
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56. Which process is described in the Map stage shown in the figure below?
A. Partition
B. Sort
C. Spill/Merge
D. Combine
Answer: D
57. Spark is a memory-based computing engine, and all data during the running of Spark
programs can only be stored in memory
A. True
B. False
Answer: B
58. In the copy placement strategy of HDFS, what is the distance between different servers in
the same rack?
A.1
B.2
C.3
D.4
Answer: B
59. In the Fusioninsight HD system, if a Loader node in the cluster is abnormal, and other
services are normal, the normal use of the Loader service function will not be affected.
A. True
B. False
Answer: A
60. Which of the following descriptions about the basic operations of Hive SQL is correct?
A. When loading data to Hive, the source data must be a path of HDFS
B. Creating an external table must specify location information
C. You can specify the column separator when creating the table
D. Create an external table using the external keyword. To create an ordinary table, you need to
specify the internal keyword
Answer: C
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61. When planning and deploying a Fusionlnsight cluster, it is recommended to deploy _ ___
management nodes, at least ____ control nodes, and at least _____ data nodes.
A. 1, 2, 2
B. 1, 3, 2
C. 2, 3, 1
D. 2, 3, 3
Answer: D
62. To execute the HBase data reading business, which parts of the data need to be read?
(Multiple choice)
A. HLog
B. MemStore
C. HFile
D. HMaster
Answer: BC
63. Which of the following are the characteristics of Huawei Kunpeng processors?
A. High-performancecomputing, high-performance Huawei Kunpeng processors compatible
with ARM architecture and x86 architecture servers and solutions
B. Safe and reliable, creating a high quality that is as stable as Mount Tai
C. 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
D. All of the above are correct
Answer: D
64. ElasticSearch can be used as a relational database similar to MySQL.
A. True
B. False
Answer: B
65. Which of the following scenarios are not good for Flink components? (Multiple choice)
A. Batch processing
B. Iterative calculation
C. Stream processing
D. Data storage
Answer: BD
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66. Which of the following descriptions about the function of HMaster in HBase is correct?
(Multiple choice)
A. Region load balancing, Region splitting and Region allocation after splitting
B. Responsible for creating tables, modifying tables/deleting tables
C. Responsible for load balancing of RegionServer
D. Region migration after RegionServer failure
Answer: ABCD
67. Regarding the relationship between Hive and other components of Hadoop, which of the
following descriptions is wrong?
A. Hive finally stores the data in HDFS
B. Hive is a data warehouse tool for the Hadoop platform
C. HQL can perform tasks through MapReduce
D. Hive has a strong dependence on HBase
Answer: D
68. In order to consider performance optimization, it is recommended to deploy LdapServer and
KrbServer on the same node in all clusters.
A. True
B. False
Answer: A
69. Which of the following is a characteristic of Streaming? (Multiple choice)
A. Data is stored first and then calculated
B. is event-driven
C. Low latency
D. Can do continuous query
Answer: BCD
70. A typical Kafka cluster includes several Producers, several Brokers, several Consumers and
a ZooKeeper cluster.
A. True
B. False
Answer: A
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71. Which of the following descriptions about HBase's file storage module (HBase FileStream,
HFS for short) is correct? (Multiple choice)
A. Applied to 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 an independent module of HBase
Answer: ABCD
72. The job execution of Loader failed, the imported data will not be deleted automatically and
must be deleted manually.
A. True
B. False
Answer: B
73. C. The channel acts like a queue and is used to temporarily cache the incoming data. When
the Sink successfully sends the data to the next-hop Channel or the final destination, the data
will be removed from the Channel.
A. True
B. False
Answer: A
74. The functions of Nimbus in the Streaming architecture include? (Multiple choice)
A. Monitor task execution status
B. Task scheduling
C. Start/shutdown worker process
D. Resource allocation
Answer: ABD
75. Which of the following statements about the comparison between Sparkstreaming and
Streaming is wrong?
A. SparkStreaming is a micro-batch processing framework, and events need to be processed
when they are exhausted to a certain amount
B. The execution logic of Streaming is to start immediately and recycle after running
C. The throughput of SparkStreaming is about 2-5 times that of Streaming
D. SparkStreaming event processing delay is higher than Streaming
Answer: B
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