Latest Huawei H13-723-ENU PDF and Dumps (2021) Free Exam Questions Answers
Pass Your Huawei Other Certification H13-723-ENU Exam on Dec 14, 2021 with 155 Questions
NEW QUESTION 89
Which of the following descriptions about the characteristics of Kafka is correct? (multiple choice)
- A. Kafka is a high-throughput, distributed, publish-and-subscribe messaging system
- B. Kafka can achieve message persistence
- C. Kafka can ensure that the messages in each Partition are in order
- D. Kafka is suitable for offline and online message consumption scenarios
Answer: A,B,C,D
NEW QUESTION 90
In FusionInsight HD, use the Streaming command line to submit the om.huawei.examole.WordCount task in example.jar. The task name is wcTest. Which of the following commands is correct?
- A. storm jar example .jar wcTest om.huawei.example.WordCount
- B. storm jar example.jar WordCount wcTest
- C. storm jar example .jar wcTest WordCount
- D. storm jar example .jar om.huawei.example.WordCount wcTest
Answer: D
NEW QUESTION 91
In FusionInsight HD, when using Streaming's ACK mechanism, which of the following statements are correct? (multiple choice)
- A. After Acker is enabled, Streaming will identify the Tuple that failed to be sent and automatically resend it without human intervention.
- B. Starting from the spout, the failure of any link in the formed Tuple tree will mark the entire tree as a failure.
- C. Acker will mark the processing timeout or processing failure message as fail.
- D. The application needs to implement message retransmission logic in the fail() interface method of spout.
Answer: B,C,D
NEW QUESTION 92
Suppose there is an application, there are 10 tables, each table has tens of millions of records, and the number of fields is about 20.
Now Redis is used to cache the data of these 10 tables. For the design of the data structure, which of the following is the best design?
- A. Using a hash structure, each row record of each table uses a hash KEY, the field of the hash KEY corresponds to the field of the table record, and each table is designed with a different prefix to distinguish it.
- B. Using string structure, each row of each table uses a KEY, and value is the concatenated value of all the fields in a row of the table.
- C. A hash structure is adopted, and a table uses a hash KEY, and a row in the table records a field for the hash KEY.
- D. Using string structure, each field in each row of each table uses a KEY.
Answer: A
NEW QUESTION 93
In FusionInsight HD's Hive, the user-defined UDF can have the same name as the Hive built-in UDF. In this case, the user-defined UDF will be used.
- A. True
- B. False
Answer: B
NEW QUESTION 94
In HDFS application development, which of the following are the interfaces supported by the HDFS service? (multiple choice)
- A. FileSystem.append
- B. FileSystem.create
- C. BufferedOutputStream.flush
- D. BufferedOutputStream.write
Answer: A,B,C,D
NEW QUESTION 95
Regarding the Hive service of the FusionInsight HD platform and its WebHCat development interface, which of the following descriptions is incorrect?
- A. WebHCat provides external services based on HTTP and HTTPS protocols
- B. Support REST-based query request
- C. You can create tables, query and other operations through WebHCat
- D. The data format returned by WebHCat is XML
Answer: D
NEW QUESTION 96
In FusionInsight HD, which of the following scenarios does Streaming apply to? (multiple choice)
- A. Offline log analysis
- B. Streaming data monitoring
- C. Traffic flow analysis
- D. Real-time access statistics of the website
Answer: B,C,D
NEW QUESTION 97
When designing a certain collection of Solr, you need to design its Schema, and realize the design of the Schema by configuring the schema.xml file. What is wrong about the Schema statement below?
- A. For fields that do not need to store the original value, the stored attribute can be set to false.
- B. For a field of the same document, there are multiple values, and they all need to be retained, then the multiValued of the field must be set to true.
- C. Schema is similar to the table structure in a relational database. It is used to define the structure of index data. It mainly consists of three parts: unlqueKey, Field and FleldType.
- D. copyField can be defined as follows: <field name= " cat " type= " string " indexed = " true " stored = " true " docValues= " true " multiValued= " false " /> <field name= " dog " type = " string " indexed = " true " stored = " true " docValues= " true " multi Valued = " false " /> <field name= " text " type= " text_general " indexed = " true " stored = " false " multiValued = " false " /> <copyField source= " cat " dest= " text " maxChars= " 30000 " /> <copyField source= " dog " dest= " text " maxChars = " 30000 " />.
Answer: D
NEW QUESTION 98
In Kafka, the Producer can ensure that the data is sent in order by configuring the synchronization parameters (producer.type).
- A. True
- B. False
Answer: A
NEW QUESTION 99
In Spark, SparkSQL is an independent module, which can independently complete SQL statement parsing, optimization, and execution without relying on SparkCore.
- A. True
- B. False
Answer: B
NEW QUESTION 100
In Kafka, which of the following commands can check how many partitions a topic has?
- A. kafka-topics.sh --list
- B. kafka-topics.sh --create
- C. kafka-topics.sh --alter
- D. kafka-topics.sh - describe
Answer: D
NEW QUESTION 101
In Flume, what is the main function of the source function module?
- A. Split the data and send the data to different destinations according to the characteristics of the data
- B. Obtain data and convert the original data into data objects that you process
- C. Output data to destination, support multiple output protocols
- D. Cache data and save the data in memory or files according to different reliability strategies
Answer: B
NEW QUESTION 102
Which of the following reasons will cause HDFS NameNode to enter safemode (safe read-only mode)? (multiple choice)
- A. The missing copy exceeds the threshold.
- B. The disk space where the metadata of the active and standby NameNodes reside is insufficient.
- C. The damaged copy exceeds the threshold.
- D. The number of lost blocks exceeds the threshold.
Answer: B,D
NEW QUESTION 103
HDFS is not suitable for which of the following business scenarios?
- A. Streaming file storage
- B. Large file storage
- C. Mass data storage
- D. Large amount of small file storage
Answer: D
NEW QUESTION 104
In the HBase table design, for multiple businesses sharing the rowkey, which leads to data access contradictions, what strategies can be used to deal with it?
- A. Create a secondary index
- B. Redundancy method (use space for time plant efficiency)
- C. Compromise method (rowkey design takes into account the business needs of A and B)
- D. Pre-division region
Answer: A,B,C
NEW QUESTION 105
The system time of the node where the HDFS client is located must be consistent with the system time of the FusionInsight HD cluster. If there is a time difference, the time difference should be less than a few minutes?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION 106
In FusionInsight HD, which of the following are the configuration items of Oozie's MapReduce Action? (multiple choice)
- A. mapred.mapper.class
- B. source
- C. job-tracker
- D. name-node
Answer: A,C,D
NEW QUESTION 107
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