Ultimate Guide to Prepare H13-723 Certification Exam for Huawei Other Certification in 2021
Use Real H13-723 Dumps - Huawei Correct Answers updated on 2021
NEW QUESTION 29
In FusionInsight HD, Oozie supports HDFS Action.
- A. True
- B. False
Answer: A
NEW QUESTION 30
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. Mobile number + date
- B. Date + mobile phone number
- C. Name + mobile phone number
- D. Mobile phone number + name
Answer: A
NEW QUESTION 31
HDFS adopts a file access model of "write once, read many times". Therefore, it is recommended that after a file is created, written, and closed, it should not be modified.
- A. True
- B. False
Answer: A
NEW QUESTION 32
In FusionInsight HD, which method of the OozieClient class will be called by the JAVA API of the Oozie client when running tasks?
- A. run
- B. submit
- C. suspend
- D. getJobInfo
Answer: A
NEW QUESTION 33
For the design principles of HBase rowkey, which of the following descriptions is correct? (multiple choice)
- A. The attribute value with high access weight is placed in front of RowKey
- B. Attribute values with good dispersion are placed in the second half of Rowkey
- C. The attribute value with good dispersion is placed in the first half of Rowkey
- D. The attribute value with high access weight is placed in the second half of Rowkey
Answer: A,C
NEW QUESTION 34
In FusionInsight HD, what are the data distribution methods belonging to Streaming? (multiple choice)
- A. Shuffle Grouping
- B. Local Grouping
- C. Direct Grouping
- D. Field Grouping
Answer: A,B,C,D
NEW QUESTION 35
For an application running on the MapReduce platform, where will the jar package that the application depends on be placed?
- A. HBASE
- B. HDFS
- C. HIVE
- D. DB
Answer: B
NEW QUESTION 36
There are the following business scenarios: the user's online log files have been stored on HDFS, and the log file content format is: each online record has three fields, namely name, gender, and online time, separated by "," between the fields; All female netizens who spend more than two hours online are required to print out.
Which of the following code fragments can achieve the above business scenarios? (multiple choice)
- A. sc.textFile( " /data/file/path " .map(_.split( " , " ).map(p => Femalelnfo(p(0), p(1), p (2) .trim.tolnt)).toDF.registerTempTable("FemalelnfoTable") sqlContext.sql("select name,sum(stayTime) as stayTime from FemalelnfoTable where gender = ' Female ' group by name " ).filter( " stayTime >= 120 " ).collect().foreach(println)
- B. val text = sc.textFile("/data/file/path") val data = text.filter(_.contains("female")) val femaleData:RDD[(String,Int)] = data.map{Iine => val t = line.split( ' , ' ) (t(0),t(2).tolnt) }. val result = femaleData.filter(line => line._2> 120) result.collect().map(x => x._1 + ' , ' + x._2).foreach(println)
- C. sc.textFile( " /data/file/path " .map(_.split( " , " ).map(p => Femalelnfo(p(0), p(1), p (2) .trim.tolnt)).toDF.registerTempTable("FemalelnfoTable") sqlContext.sql("select name,sum(stayTime) as stayTime from FemalelnfoTable where gender = ' Female '" ).filter( " stayTime >= 120 " ).collect().foreach(println)
- D. val text = sc.textFile("/data/file/path") val data = text.filter(_.contains("female")) val femaleData:RDD[(String,Int)] = data.map{Iine => val t = line.split( ' , ' ) (t(0),t(2).tolnt) }.reduceByKey(_ + _) val result = femaleData.filter(line => line._2> 120) result.collect().map(x => x._1 + ' , ' + x._2).foreach(println)
Answer: A,D
NEW QUESTION 37
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 38
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 39
What distributed computing framework does the FusionInsigt HD big data platform provide? (multiple choice)
- A. MapReduce
- B. Streaming
- C. Spark
- D. HBase
Answer: A,B,C
NEW QUESTION 40
Which of the following descriptions about the characteristics of Kafka is correct? (multiple choice)
- A. Kafka can achieve message persistence
- B. Kafka can ensure that the messages in each Partition are in order
- C. Kafka is a high-throughput, distributed, publish-and-subscribe messaging system
- D. Kafka is suitable for offline and online message consumption scenarios
Answer: A,B,C,D
NEW QUESTION 41
In Kafka, which of the following commands can check how many partitions a topic has?
- A. kafka-topics.sh --create
- B. kafka-topics.sh --list
- C. kafka-topics.sh --alter
- D. kafka-topics.sh - describe
Answer: D
NEW QUESTION 42
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 43
On the client of FusionInsight HD, execute the kinit {account} command to get what item of KDC?
- A. TGT
- B. jaas.conf
- C. Krb5.conf
- D. ST
Answer: A
NEW QUESTION 44
Which of the following methods can generate DStream objects?
- A. StreamingContext.socketStream(..)
- B. KafkaUtils.createStream(...)
- C. KafkaUtils.createDirectStream(...)
- D. StreamingContext.fileStream(...)
Answer: A,B,C,D
NEW QUESTION 45
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 46
In the FusionInsight HD system, with regard to the Hive JDBC interface type, which of the following descriptions is correct?
- A. Hive is different from traditional databases, so the connection established by JDBC does not need to be closed.
- B. In a network isolation environment, ZooKeeper's IP can be configured as either a service IP or a management IP.
- C. When using JDBC to submit SQL, you can add a semicolon ";" after the SQL statement.
- D. In a secure cluster environment, before establishing a connection with Hive, you need to log in using a unified authentication method.
Answer: D
NEW QUESTION 47
......
Huawei Other Certification -H13-723 Exam-Practice-Dumps: https://www.pass4training.com/H13-723-pass-exam-training.html
