Complete Your HCIP-Big Data Developer V2.0 Exam with the Latest H13-723_V2.0-ENU Dumps (V8.02) – A Reliable Solution to Achieve Success

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

A user submitting a task can use 100% of the resources of Queue

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

If two users' tasks are already running in QueueA, a task submitted by a third user must wait for resources to be released.

Each user in QueueA can receive a maximum of 50% of the resources.

2. Regarding ElasticSearch, which of the following options is correct?

Elasticsearch itself does not include a RESTful AP

ElasticSearch does not support distributed systems.

Elasticsearch only offers a performance advantage when dealing with relatively small amounts of data.

Elasticsearch supports fuzzy searches.

3. Which of the following scenarios is HDFS suitable for?

Storage of a large number of small files

Streaming data access

Low-latency reading

Random write

4. In Hive, which of the following options provides detailed information about a function's usage?

hive>get functions;

hive> desc function extended upper;

hive> desc function upper;

hive>show functions;

5. Which of the following is NOT a characteristic of an enterprise-level big data platform?

Data sharing

Poor maintainability

Resource sharing

Can be smoothly expanded

6. In Redis, which of the following descriptions of AOF persistence is incorrect compared to RDB persistence?

AOF persistence is implemented using snapshots.

Slow recovery speed when a fault occurs.

Excessive memory usage and large file size

High disk I/O overhead

7. For a website to achieve real-time popularity ranking, which of the following technical options is the best approach?

Redis sorting calculations

Offline computing of MapReduce

Hive's offline computing

HDFS's massive storage capacity

8. Regarding the fault handling mechanism of HRegionServer in HBase, which of the following statements is incorrect?

HMaster first processes the HLog files left behind on the failed HRegionServer. These legacy HLog files contain log records from multiple Region objects.

Shared logs: Advantages: Logs need to be split during recovery; Disadvantages: Improves write performance on tables.

Zookeeper monitors the status of each HRegionServer in real time. When an HRegionServer fails, Zookeeper notifies the HMaster.

Split the HLog data based on the Region object to which the log records belong, and place them into the corresponding directories of those Region objects.

9. Which of the following descriptions about Flink barriers is incorrect?

Barriers are periodically inserted into the data stream and flow along with it as part of the data stream.

Barriers are the core of Flink snapshots.

A barrier separates the data from the current period's snapshot with the data from the next period's snapshot.

Inserting a barrier will temporarily block the data flow.

10. In Huawei Cloud GES, to add "zhangsan" as a friend to the user with the id "Katherine" in graph g, which of the following options will correctly achieve the above goal?

g.addE (' friends') .from (gV (" Katherine" )) .to (gV ("; zhangsan"))

g.addE (' friends') .from (gV (" zhangsan" )) .to (gV("; Katherine"))

g.addv (' friends') .from (gV (" zhangsan" )) .to (gV("; Katherine "))

g.addv (' friends') .from (gV (" Katherine" )) .to (gV ("; zhangsan"))

11. For which of the following scenarios is Hive NOT suitable?

Real-time online data analysis

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

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

Data aggregation, such as daily and weekly user click counts, click rankings.

12. Which of the following is NOT a scroll aggregation operator in Flink components?

sum ()

min ()

minBy ()

KeyBy ()

13. Scan 'cx_table_stu01', {STARTROW => '20200001', LIMIT => 2, STOPROW => '20200002'}

Executing the above HBase command, based on the Rowkey, how many rows of data will be included in the query results?

3

2

1

4

14. In the GES graph engine service, which of the following descriptions about using the Gremlin Java API to perform operations is incorrect?

The client needs to establish a connection with one or more Gremlin server instances, creating the Client based on the Cluster object.

Synchronous submission means that after the client submits a task, it waits in place until the task has been fully executed and the result is obtained before executing the next line of code, which will result in the tasks being executed serially.

Future (ResultSet) ResultSet=Client.submitAsync("gv( ).hasLabel('person').valueMap (name', 'age' ).limit(10)”), this command belongs to synchronous commit.

Asynchronous submission refers to a situation where, after submitting a task, the client does not wait in place but immediately executes the next line of code, resulting in tasks being executed concurrently.

15. In Hive, the command `hive> DESCRIBE invites` can achieve which of the following functions?

Description Table

Create a table

Browse the table

Modification Table

16. Which of the following is NOT a characteristic of Kafka?

Distributed

Random Read

High throughput

Message persistence

17. Which of the following descriptions about the Hash type in Redis is incorrect?

Hash type is suitable for storing objects.

Hash type fields and field values can only be strings.

Hash type values store a mapping between fields and field values.

Hash type keys can store at most 2^32 fields.

18. Which aspect is NOT a difference between big data and traditional data?

Programming Language

Data Scale

Data Types

Processing Object

19. Which of the following characteristics does the one-stop platform, one of the four capabilities of Huawei FusionInsight MRS, possess?

A one-stop integrated platform that supports the integration of data lakes, data warehouses, BI, and AI, eliminating data silos.

Unified management of all components and multiple clusters

Open, advanced, and sustainable, the product fully meets the requirements for innovation in information technology applications.

Reliability: 99.999%, stable operation 7+24 hours a day.

20. Starting with HDFS version 2.7.3, what is the default Block Size?

32MB

128MB

64MB

16MB

21. Provides enterprise-level metadata management within the DGC platform architecture. Data asset management is visualized, supporting drill-down and traceability.

Which module, through data mapping, enables visualization of data asset lineage and a comprehensive data overview, and provides intelligent data search and operational monitoring?

Data Development

Data Asset Management

Standard Design

Data Integration

22. What component does HBase use by default as its underlying file storage system?

Kafka

HDFS

Memory

File

23. What is the default number of databases that Redis supports?

10

16

5

15

24. In Spark, which of the following tasks is the ClusterManager responsible for?

Requesting Resources

Allocating resources

Prepare the Task environment

Execute Task

25. How many retries will Spark attempt by default if a task fails?

2

3

4

1

26. Which of the following descriptions about Redis persistence is incorrect?

You can manually execute the `save` or `bgsave` command to make Redis perform a snapshot.

AOF persistence is achieved through log files.

Persistence in RDB mode is accomplished through snapshots.

Redis's default persistence method is AO

27. Which of the following is NOT a problem faced by traditional data processing systems?

Diverse data sources

Limited scalability

Insufficient big data processing capabilities

High storage costs for massive amounts of data

28. Which of the following statements about Elasticsearch is incorrect?

Distributed file storage, with each field indexed to make it searchable.

Distributed search engine with real-time analytics

ElasticSearch can store and retrieve petabytes of data, but it is only suitable for offline batch processing scenarios.

It can scale to hundreds of servers, handling petabytes of structured or unstructured data.

29. Which of the following options can be used as a Kafka Consumer?

Front End

Crawler (web crawler)

Data Warehouses

Sensor

30. Which of the following descriptions about Flume is incorrect?

Flume does not support cascading (connecting multiple Flume instances) and its ability to merge data. the ability to collect log information from a fixed directory and transmit it to a destination (HDFS, HBase, Kafka).

Provides the ability to collect log information (taildir) in real time and send it to the destination.

Flume supports the ability to collect data according to user specifications.

31. In big data computing tasks, which description of I0-intensive tasks is incorrect?

During the execution of I/O-intensive tasks, most of the time is spent on I/O processing.

Performance can be significantly improved by enhancing network transmission and read/write efficiency.

High CPU consumption

The more tasks, the higher the CPU efficiency.

32. Which of the following is NOT a customer value brought about by component-based mixed load balancing and unified resource scheduling?

CPU and GPU heterogeneous computing scheduling

Hybrid load balancing and unified resource pool scheduling improve resource utilization.

The number of authorized users has been significantly reduced.

Resource pool isolation ensures that computing tasks do not interfere with each other.

33. Which of the following descriptions about Hive multi-table joins is correct?

The rightmost table in Hive is the largest table, and it's not possible to specify which table is the largest using commands.

When performing multi-table joins, Hive performs the join operation from right to left.

In Hive SQL, it is recommended to write the smaller table on the right side, as this can improve execution efficiency.

Generally, the number of MapReduce tasks started corresponds to the number of tables involved in the join operation.

34. Regarding the Elasticsearch ecosystem, which of the following descriptions is incorrect?

Kibana: An open-source analytics and visualization platform that leverages the search and analytics capabilities of Elasticsearch to obtain results needed for higher-level analysis and visualization.

Beats: A platform specifically designed for sending data, capable of seamlessly transferring data to Logstash or Elasticsearch.

elasticsearch-head: A project that deeply integrates Hadoop and Elasticsearch. It is an officially maintained sub-project.

Logstash: A pipeline with real-time data transmission capabilities, focusing on log-related processing. 31

35. Which of the following resources is NOT a bottleneck encountered by big data clusters during data transmission?

Disk I/O

Memory

Network

CPU

36. Which of the following components does the Kafka runtime directly depend on?

HBase

HDFS

Spark

Zookeeper

37. In the one-stop integration of big data technologies, which of the following options does computing integration refer to?

Migrating Big Data Infrastructure to the Cloud

Integrating diverse computing power to improve overall efficiency.

Intelligent data analysis and intelligent data governance on the big data platform

Batch, interactive, and streaming computing frameworks share resources and utilize them in a time-sharing manner.

38. In Kafka HA, when the Leader corresponding to a Partition fails, a new Leader needs to be elected from the Followers. Which of the following roles performs this task?

Follower

Controller

Broker

Leader

39. Which of the following is NOT a difference between Hive and traditional data warehouses?

Object-oriented

Execution Engine

Index

Ease of use

40. Which of the following descriptions of the Structured Streaming processing mode is incorrect?

Structured Streaming uses a micro-batch processing model by default, which has lower latency than the continuous processing model.

The stream processing engine of the micro-batch processing model needs to process the previous batch of data before performing batch queries on the new data.

Continuous processing models are built on the sacrifice of consistency; data loss may occur even with low latency.

Structured Streaming includes two processing models: micro-batch processing and continuous processing.

41. Which of the following options is NOT a technology required for smart cities?

AI computing

Big Data

Handmade

Intelligent Transportation

42. Which of the following commands can be used to view detailed information about a Kafka topic's partition in Huawei MRS service?

A bin/kafka-topics.sh --create

B bin/kafka-topics.sh --describe

bin/kafka-topics.sh --delete

bin/kafka-topics.sh --list

43. In big data business processing scenarios, it is often said that it is not suitable to store a large number of small files.

This is primarily affected by which of the following components?

HDFS

Hive

Yarn

MapReduce

44. Which of the following descriptions regarding Hive Left Outer Joins and Right Outer Joins is incorrect?

A Left Outer Join uses the left table as the base; if the data in the right table matches the 'ON' condition, it is displayed; otherwise, NULL is displayed.

The concept of a Left Outer Join is the same as an Inner Join, but the concept of a Right Outer Join is different from an Inner Join.

For both Left Outer Joins and Right Outer Joins, the 'WHERE' condition is executed only after the 'ON' condition has been executed.

A Right Outer Join uses the right table as the base; if the data in the left table matches the 'ON' condition, it is displayed; non-matching data is displayed as NUL

45. Which of the following descriptions of Spark's wide and narrow dependencies is correct?

Wide dependency: Multiple parent RDD partitions correspond to one child RDD partition.

Narrow dependency: Each partition of a parent RDD corresponds to a partition of a child RD

Wide dependency: Each parent RDD partition can only correspond to all child RDDs.

Narrow dependency, where each partition of a parent RDD corresponds to multiple partitions of child RDDs.

46. In Spark, how is DataSet data stored?

Key-value pairs

String

Encoded binary

Date

47. To improve fault tolerance, Kafka supports partition replication strategies. Which of the following descriptions regarding Leader Partitions and Follower Partitions is incorrect?

In a Kafka cluster, it's impossible for any node to be both leader and leader.

If the leader fails, another follower will take over (become the new leader).

Since the leader server bears all the request load, Kafka distributes the leader evenly across each instance to ensure overall cluster performance stability.

Kafka requires electing a leader for partition replication. This leader is responsible for reading and writing partitions, while other replica nodes are only responsible for data synchronization.

48. A big data developer is creating a partitioned table but doesn't know how to set the field type of the partition field.

Regarding his predicament, which of the following suggestions is reasonable?

The field type of the partition field must not have any business logic.

The field type of the partition field does not affect the query efficiency of the table.

The partition field can be a String field.

The field type of the partition field should prioritize meeting business requirements.

49. Which of the following is NOT a modifier that can be specified when using the `scan` command in HBase?

STARTROW (ROWKEY starting line)

HDFS BlockSize (limits the size of data blocks read in HDFS)

Limit (limits the number of rows in the query results)

TIMERANGE (limited timestamp range)

50. Which of the following descriptions about the KeyBy operator is incorrect?

Logically split a stream into disjoint partitions.

Each partition contains elements with the same key.

Implemented internally using a hash function.

The data type conversion is KeyedStream -> DataStream.

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