Updated Jan 13, 2022 Test Engine to Practice Test for H13-723-ENU Valid and Updated Dumps
Exam Questions for H13-723-ENU Updated Versions With Test Engine
NEW QUESTION 90
For Spark Streaming applications, in a JVM, only one StreamingContext can be active at the same time.
- A. True
- B. False
Answer: A
NEW QUESTION 91
Which of the following scenarios is not suitable for Redis? (multiple choice)
- A. Complex transaction operations
- B. A message queue application that is consumed by multiple consumers at the same time and guarantees that the message is successfully consumed by all subscribers (subscription-notification)
- C. Get the latest N data: for example, get the latest 10 comments on a Weibo
- D. Counter application: for example, counting the number of people logged in to a certain website
Answer: A,B
NEW QUESTION 92
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 93
In Kafka, which statement about Consumer is correct? (multiple choice)
- A. When multiple Consumers are configured with the same group.id, the data consumed by these Consumers will not be repeated
- B. Consumer mainly conducts data consumption
- C. The new ConsumerAPI consumption data does not need to specify the ZooKeeper address
- D. Topic needs to be specified when Consumer consumes data
Answer: A,B,C,D
NEW QUESTION 94
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 95
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 96
In the FusionInsight HD system, in the Solr example project solr-example\conf\solr-example.properties, the values of ZK_URL and ZOOKEEPER_DEFAULT_SERVER_PRINCIPAL can be obtained from which of the following options?
- A. Obtain from the Solr Admin UI interface
- B. Obtained from the FusionInsight Manager Solr service configuration interface
- C. In solr-example\conf\solr-example.properties, these two parameters are already included by default
Answer: A
NEW QUESTION 97
When adding a RegionServer host to an HBase cluster, you must stop the original cluster first, because HBase does not support dynamic expansion.
- A. True
- B. False
Answer: B
NEW QUESTION 98
When the HDFS client writes files to HDFS with N copies, if one of the copies fails to write, all copies will return the write failure.
- A. True
- B. False
Answer: B
NEW QUESTION 99
In Spark, which statement about broadcast variables is correct?
- A. Broadcast variables are saved in each Task
- B. Broadcast variables are generated by the SparkContext.broadcast() method
- C. Broadcast variables are read-only
- D. The broadcast variable is saved in each Executor
Answer: B,C,D
NEW QUESTION 100
Spark Streaming can receive data from Kafka and perform calculations. The calculation results can only be stored in HDFS and cannot be written back to Kafka.
- A. True
- B. False
Answer: B
NEW QUESTION 101
When creating a user through the FusionInsight manager interface, if you want the user to have read and write permissions for all topics, but do not have the permission to create topics, which group of Kafka service should be added?
- A. Kafkaadmin group
- B. Kafka group
- C. Kafkasuperuser group
Answer: C
NEW QUESTION 102
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 103
Regarding Kafka's Producer, which of the following statements is correct? (multiple choice)
- A. Multiple Producer processes can be started at the same time to send data to the same topic
- B. Producer production data needs to specify Topic
- C. When Producer produces data, it needs to connect to ZooKeeper first, and then connect to Broker
- D. Producer is a message producer
Answer: A,B,D
NEW QUESTION 104
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 105
In FusionInsight HD, what are the data distribution methods belonging to Streaming? (multiple choice)
- A. Direct Grouping
- B. Local Grouping
- C. Field Grouping
- D. Shuffle Grouping
Answer: A,B,C,D
NEW QUESTION 106
What are the features of Streaming in FusionInsight HD? (multiple choice)
- A. High fault tolerance
- B. High performance
- C. Scalable
- D. Stream processing
Answer: A,B,C,D
NEW QUESTION 107
Regarding Redis cluster topology information, which of the following descriptions is correct?
- A. Neither
- B. The server caches the cluster topology information
- C. Both
- D. The client caches the cluster topology information
Answer: C
NEW QUESTION 108
Regarding the file format provided by Hive in the FusionInsight HD system, which is not a columnar file?
- A. CRC
- B. Parquet
- C. TextFiIe
- D. RCFile
Answer: C
NEW QUESTION 109
A certain project needs to save the online data in a certain area and search the full text whether there is any sensitive information in these online records to prevent crimes in the area.
In this scenario, which of the following is the best solution?
- A. Create an index on Solr, save the data, and return all the data when searching the full text.
- B. When storing data, create an index on Solr and store the complete data in HBasx; when querying, obtain key information of records through Solr full-text search, and obtain complete records on HBase through key information.
- C. Store data on HBase, and satisfy fuzzy matching queries through HBase's filtering features.
Answer: B
NEW QUESTION 110
In FusionInsight HD V100R002C60, regarding the Hive Python interface type, which of the following descriptions is incorrect?
- A. The Python version is required to be no lower than 2.6.6 and no higher than 2.7.0
- B. Python secondary development does not support secure clusters
- C. The client must be installed with setuptools, and the version is not lower than 5.0
- D. The hive_python_client script provides the function of directly executing SQL, such as hive_python_client'show tables '
Answer: B
NEW QUESTION 111
For an application running on the MapReduce platform, where will the jar package that the application depends on be placed?
- A. DB
- B. HDFS
- C. HIVE
- D. HBASE
Answer: B
NEW QUESTION 112
When using Solr for full-text search, you can specify the response format of the query result through the wt parameter.
Regarding the response format of Solr query results, what is wrong in the following statement?
- A. Support CSV, JSON and XML
- B. Support CSV and JSON
- C. Support CSV, JSON and HTML
Answer: C
NEW QUESTION 113
Redis LIST data structure, which of the following scenarios is suitable for? (multiple choice)
- A. uniq operation, for example, get the weight value of all data in a certain period of time
- B. Simulate stack operation
- C. Get the latest N data operations: for example, get the latest 10 comments on a Weibo
- D. Build a queue system, such as a message queue
Answer: B,C,D
NEW QUESTION 114
In Spark, assuming that lines is a DStream object, which of the following statements can periodically count the number of words on this stream?
- A. Iines.fIatMap(_.spIit (" " )).map(word => (word, 1)).reduceByKey(_ +_).print()
- B. Iines.flatMap(_.split (" " )).map(word => (word, 1)).reduce(_ +_).print()
- C. Iines.flatMap(_.split (" " )).map(word => (word,word.Iength())).reduceByKey (_ +_).print()
- D. Iines.flatMap(_.split (" " )).flatMap(word => (word, 1)).groupByKey(_ +_).print()
Answer: A
NEW QUESTION 115
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