Tested Material Used To H13-723 Test Engine Exam Questions in here [Aug-2021]
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NEW QUESTION 47
In MapReduce application development, which of the following JAVA classes is responsible for managing and running a computing task?
- A. FileSystem
- B. lob
- C. Configuration
- D. Context
Answer: B
NEW QUESTION 48
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 supports efficient random reading, and can complete real-time analysis and command of the logistics situation after a reasonable design.
- 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 stores massive data and supports dynamic expansion, which can fulfill the storage requirements of logistics and sales data.
Answer: A,B,C,D
NEW QUESTION 49
Solr is a high-performance, full-text search service based on Lucene. Solr has extended Lucene to provide a richer query language than Lucene, and implements a powerful full-text search function with a high degree of scalability. At the same time, starting from Solr 4.0 version, SolrCloud mode is supported.
- A. True
- B. False
Answer: A
NEW QUESTION 50
In Spark, SparkSQL is an independent module, which can independently complete SQL statement parsing, optimization, and execution without relying on SparkCore.
- A. False
- B. True
Answer: A
NEW QUESTION 51
In FusionInsight HD, assuming a topology, spout concurrency is set to 3, bolt1 concurrency is 2, bolt2 concurrency is 3, and the number of workers is 2, then how are bolt1's executors distributed among workers?
- A. Two workers are distributed
- B. Two workers each distribute one
- C. There is no fixed pattern
- D. One of the two workers is distributed to two
Answer: B
NEW QUESTION 52
During the Solr application development of FusionInsight HD products, you can verify the Collection through the Solr Admin UI.
Which of the following statements about Solr Admin UI is correct? (multiple choice)
- A. Enter the Core Overview interface of the Shard Replica of a Collection, you can view the actual number of documents, storage size and location information of the Replica index
- B. Solr user group, Solr admin role and Super group users can access Solr Admin UI
- C. Click Cloud to view the distribution and status of each ShardReplica under each Collection
- D. Click Tree under Cloud to view metadata information such as Collections, configuration sets and live_nodes in Solr Cloud
Answer: A,B,C,D
NEW QUESTION 53
What are the features of Streaming in FusionInsight HD? (multiple choice)
- A. High performance
- B. High fault tolerance
- C. Stream processing
- D. Scalable
Answer: A,B,C,D
NEW QUESTION 54
A customer has the following scenario: indexing PB-level data requires real-time indexing performance of more than 2MB/s, and supports full-text retrieval, and requires query performance to reach a second-level response.
For the above scenarios, regarding the Solr collection design, which of the following design schemes are reasonable? (multiple choices)
- A. In the configuration set, the DirectoryFactory parameter in the solrconfig.xml file can be set to org.apache.solr.core.NIOFSDirectoryFactory
- B. When creating a Collection, you can set the number of Shards to be an integer multiple of the number of SoIrServer instances to ensure that each SoIrServer instance is negatively balanced as much as possible
- C. It can be used in conjunction with Hbase, set the uniqueKey field and HBase RowKey field to the same value, and use the implicit Router method to make the document evenly distributed to each shard
- D. It can be used in conjunction with HBase. Solr only builds indexes for non-RowKey fields that need to be retrieved. HBase is responsible for storing data in all fields.
Answer: A,B,D
NEW QUESTION 55
In FusionInsight HD, which parts of a complete Streaming CQL application include at least? (multiple choice)
- A. Business operation statements (such as SELECT, INSERT, JION, etc.)
- B. Application submission statement
- C. Create an input stream
- D. Create an output stream
Answer: A,B,C,D
NEW QUESTION 56
Which of the following scenarios is not suitable for Redis? (multiple choice)
- A. Get the latest N data: for example, get the latest 10 comments on a Weibo
- 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. Complex transaction operations
- D. Counter application: for example, counting the number of people logged in to a certain website
Answer: B,C
NEW QUESTION 57
Use FusionInsight HD's Hive to query data. When the amount of intermediate result data to be queried is large, you can choose to compress the intermediate result data to obtain better performance.
Which of the following are the relevant parameters for Hive intermediate result compression? (multiple choice)
- A. hive.exec.compress.intermediate
- B. hive.intermediate.compression.type
- C. hive.intermediate.compression.codec
- D. hive.exec.compress.output
Answer: A,B,C
NEW QUESTION 58
In Spark application development, which of the following codes can correctly count words?
- A. val counts = textFile.flatMap (line=>line.split (" ")).map (word => (word, 1)).groupByKey ()
- B. val counts = textFile.flatMap (line=>line.split (" ")).map (word => (word, 1)).reduceByKey(_ +_)
- C. val counts = textFile.map (line => line.split ("')).map (-rd => (word, 1)).reduceByKey(_ +_)
- D. val counts = textFile.map (line=>line.split (" ")).map (word => (word, 1)).groupByKey ()
Answer: B
NEW QUESTION 59
Which of the following is correct about the HDFS client's file reading process? (multiple choice)
- A. If the client and the connected DataNode fail during reading, the client will abandon the failed node and connect to the node where the other replica is located.
- B. Support multiple clients to read the same file data from the DataNode at the same time.
- C. Download data from the nearest DataNode first.
- D. The file data is first returned from the DataNode to the NameNode, and then sent from the NameNode to the client.
Answer: A,B,C
NEW QUESTION 60
In Streaming application development, which interface does Bolt use to send Tuples?
- A. nextTuple
- B. open
- C. execute
- D. emit
Answer: C
NEW QUESTION 61
In FusionInsight HD, where can I view the running results of the MapReduce application?
- A. FusionInsight Manager web interface
- B. Solr web interface
- C. Loader web interface
- D. Yarn web interface
Answer: D
NEW QUESTION 62
In FusionInsigt HD, the user wants to query the contents of a certain HBase table through the HBase shell operation. In this scenario, it is recommended that the administrator assign a machine-to-machine account to the user.
- A. False
- B. True
Answer: A
NEW QUESTION 63
What are the several parameter setting methods for Spark applications? (multiple choices)
- A. When submitting the application, set it through --conf
- B. Configure in the application configuration file spark-defaults.conf
- C. In the application code, set by the setProperty method of SparkContext
- D. In the application code, set through the SparkConf object
Answer: A,B,D
NEW QUESTION 64
Set the data block storage size to 128M. When the HDFS client writes a file, when writing a 100M file, how much storage space is actually occupied?
- A. 100M
- B. 64M
- C. 50M
- D. 128M
Answer: A
NEW QUESTION 65
As the core object of Spark, which of the following characteristics does RDD have? (multiple choice)
- A. Read only
- B. Fault tolerance
- C. Efficient
- D. Partition
Answer: A,B,C,D
NEW QUESTION 66
Regarding Redis cluster topology information, which of the following descriptions is correct?
- A. Both
- B. The client caches the cluster topology information
- C. Neither
- D. The server caches the cluster topology information
Answer: A
NEW QUESTION 67
When developing applications in the FusionInsight HD security version, the keytab file can be used for Kerberos security authentication.
- A. True
- B. False
Answer: A
NEW QUESTION 68
In the Fusioninsight HD product, what is wrong about the Kafka secure and non-secure port description?
(Note: The old API refers to the old Producer API and the old Consumer API. Among them, the old Consumer API: refers to the interface defined in kafka.consumer.ConsumerConnector; the old Producer API: refers to the interface defined in kafka.producer.Producer.)
- A. The old API only supports access to port 21005; the new API is compatible with access to non-secure port 21005 and secure port 21007.
- B. Kafka cluster security access port defaults to 21007, non-secure access port defaults to 21005.
- C. The premise for the old API to access a topic through port 21005 is that the server parameter allow.everyone.if.no.acl.found is set to true, and the topic does not have ACL attributes set
- D. For topics with ACL set, you can use the old API to connect to port 21005 for access.
Answer: D
NEW QUESTION 69
Regarding the characteristics of the data collected by Flume, which of the following descriptions is correct?
- A. Parallel collection with MapReduce tasks
- B. Support distributed and streaming collection
- C. Only structured data can be collected
- D. Use external timing tasks to trigger data collection
Answer: B
NEW QUESTION 70
For HBase column family, which of the following attributes can be set? (multiple choice)
- A. Compression
- B. Coprocessor
- C. TTL
- D. Versions
Answer: A,C,D
NEW QUESTION 71
Which of the following business applications is not suitable for Hive?
- A. Data mining (user behavior analysis, interest division, regional display)
- B. Data summary (number of user clicks per day/week, click ranking)
- C. Real-time online data analysis
- D. Non-real-time analysis (log analysis, statistical analysis)
Answer: C
NEW QUESTION 72
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