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NEW QUESTION 58
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 59
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 60
In Streaming application development, which interface does Bolt use to send Tuples?
- A. emit
- B. open
- C. nextTuple
- D. execute
Answer: D
NEW QUESTION 61
In which of the following is the MapReduce task finally executed?
- A. ResourceManager
- B. container
- C. NodeManager
- D. AppMaster
Answer: B
NEW QUESTION 62
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 63
The rowkey design of HBase table is a very important development and design link.
Suppose there are the following scenarios. The most frequent query scenario is based on the mobile phone number to query the historical call records every month and every six months. Which of the following rowkey designs is the best?
- A. Name + mobile phone number
- B. Mobile phone number + name
- C. Mobile number + date
- D. Date + mobile phone number
Answer: C
NEW QUESTION 64
In FusionInsight HD, in which ways can I view the debugging results of Oozie jobs? (multiple choice)
- A. Check whether the returned result of Oozie's JAVA API meets expectations
- B. Oozie's own web interface can also view job execution results
- C. Use Hue's file browser to check whether the desired file is generated in the HDFS specified directory
- D. View program running results through Hue's workflow dashboard
Answer: A,B,C,D
NEW QUESTION 65
Regarding FusionInsight HD's Spark, which of the following programming languages can be used to develop Spark applications? (multiple choice)
- A. Scala
- B. C
- C. Java
- D. Python
Answer: A,C,D
NEW QUESTION 66
In Spark, the accumulator can realize high-speed parallel counter and variable summation; in the process of Spark application development, only the value of this counter can be obtained on the Driver.
- A. True
- B. False
Answer: A
NEW QUESTION 67
In the FusionInsight HD HBase cluster, Table1 belongs to Namespace1, Table2 belongs to Namespace2, and Table1 has two column families, namely cf11 and cf12, and Table2 has a column family named cf21. Which of the following schemes allows user account A to be at the same time Have read and write permissions for cf11 and cf21. (Multiple choice)
- A. Grant the user account Namespace1 read and write permissions
- B. Give the user account global read permission
- C. Grant the user account Namespace1 and Namespace2 read and write permissions
- D. Grant the user account Table1 and Tablet2 read and write permissions
Answer: C,D
NEW QUESTION 68
Which of the following is not a feature of MapReduce?
- A. Real-time calculation
- B. Easy to program
- C. High fault tolerance
- D. Good scalability
Answer: A
NEW QUESTION 69
In FusionInsight HD, regarding Hive's data loading function (importing data through Hive's LOAD command), what is wrong in the following description?
- A. It can be directly loaded to the hive table from the local hard disk of the node where the client is located
- B. Hive's data loading process will not parse the specific file content, mainly the process of file transfer
- C. It can be loaded directly to the hive table from HDFS
- D. It can be directly loaded to the hive table from the local hard disk of the node where HiveServer is located
Answer: A
NEW QUESTION 70
When the HDFS client writes files with N copies, which of the following is correct about the writing process? (multiple choice)
- A. The first copy of the data block is prioritized on the node where the client writing the data block is located.
- B. Each DataNode can store at most 1 copy.
- C. Support multiple users to write to the same file at the same time.
- D. The copied file blocks are all stored on the same rack by default.
Answer: A,B
NEW QUESTION 71
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 72
A large manufacturing company plans to transform its internal logistics data and sales data into big data. The design department has given an analysis of the data storage plan. Which of the following descriptions is correct?
- A. HBase stores massive data and supports dynamic expansion, which can fulfill the storage requirements of logistics and sales data.
- B. Logistics data is very sparse, and HBase can efficiently process sparse data.
- C. HBase can be built on ordinary commercial servers, and the construction cost is relatively low.
- D. Hbase supports efficient random reading, and can complete real-time analysis and command of the logistics situation after a reasonable design.
Answer: A,B,C,D
NEW QUESTION 73
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 74
Document is the main entity stored in the SolrColud cluster. It is the basic unit of indexing and query. It can contain one or more fields and is a set of data describing certain things. Each document must contain a uniqueKey field that can uniquely identify the document.
- A. True
- B. False
Answer: A
NEW QUESTION 75
In FusionInsight HD, when using Streaming's Linux command line mode to submit a topology, a user with Streaming submission permission needs to be used for kinit authentication
- A. True
- B. False
Answer: A
NEW QUESTION 76
In FusionInsight HD, about Hive and Sparksql, which of the following descriptions are correct? (multiple choice)
- A. Both can access data on HBase through the table field and HBase field mapping method
- B. Both can provide SQL or SQL-like capabilities externally
- C. Both can run on the Spark computing framework
- D. Both can run on the MapReduce computing framework
Answer: A,B,C
NEW QUESTION 77
For HBase column family, which of the following attributes can be set? (multiple choice)
- A. Versions
- B. Coprocessor
- C. TTL
- D. Compression
Answer: A,C,D
NEW QUESTION 78
When writing MapReduce applications, which two interfaces usually need developers to implement?
- A. map and reduce
- B. reduce and combine
- C. combine and sort
- D. map and combine
Answer: A
NEW QUESTION 79
In a FusionInsight HD cluster, Flume does not support writing collected data to which service in the cluster?
- A. HDFS
- B. HBase
- C. Redis
- D. Kafka
Answer: C
NEW QUESTION 80
Which of the following measures can improve the query performance of HBase? (multiple choice)
- A. Pre-divide regions to make regions evenly distributed and improve concurrency
- B. The data read at the same time are stored in the same cell
- C. Use secondary indexes to adapt to more query scenarios
- D. Query frequent attributes are placed in front of rowkey
Answer: A,B,C,D
NEW QUESTION 81
In the MapReduce development framework, what is the function of the InputFormat class?
- A. Split the input data into individual splits, and further split the split into <key, value> pairs, which are then used as the input of the map function
- B. Combine the results of all map stages to get the final result
- C. Combine key-value pairs with the same key value in the result of the map phase
- D. Sort and merge the results of the map stage
Answer: A
NEW QUESTION 82
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