H13-723試験無料問題集（155題）「Huawei HCIP-Big Data Developer V1.0 認定」

出題：1

Suppose there is an application that needs to frequently access the user table in the Oracle database. In order to improve performance, Redis is introduced to cache user information.
For this scenario, which of the following is the best data structure choice for Redis?

A. set

B. list

C. hash

D. sorted set

正解：C 解答を投票する

出題：2

Because Spark is a memory-based computing engine, the amount of data that a Spars application can process cannot exceed the total memory allocated to the Spark application.

A. True

B. False

正解：B 解答を投票する

出題：3

In FusionInsight HD, regarding the partition function of Hive, what is wrong in the following description?

A. Using partitions can reduce the data scan range of certain queries, thereby improving query efficiency

B. The partition field can be used as the condition of the where clause

C. The partition field should be defined when the table is created

D. There can only be one partition field, and multi-level partitions cannot be created

正解：D 解答を投票する

出題：4

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. getJobInfo

C. suspend

D. submit

正解：A 解答を投票する

出題：5

Which of the following measures can improve the query performance of HBase? (multiple choice)

A. Use secondary indexes to adapt to more query scenarios

B. Pre-divide regions to make regions evenly distributed and improve concurrency

C. The data read at the same time are stored in the same cell

D. Query frequent attributes are placed in front of rowkey

正解：A,B,C,D 解答を投票する

出題：6

Which of the following is not a feature of MapReduce?

A. Easy to program

B. Good scalability

C. High fault tolerance

D. Real-time calculation

正解：D 解答を投票する

出題：7

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 '" ).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 ' group by name " ).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)

正解：C,D 解答を投票する

出題：8

In FusionInsight HD, when using Streaming's ACK mechanism, which of the following statements are correct? (multiple choice)

A. Acker will mark the processing timeout or processing failure message as fail.

B. Starting from the spout, the failure of any link in the formed Tuple tree will mark the entire tree as a failure.

C. The application needs to implement message retransmission logic in the fail() interface method of spout.

D. After Acker is enabled, Streaming will identify the Tuple that failed to be sent and automatically resend it without human intervention.

正解：A,B,C 解答を投票する

出題：9

Which of the following business applications is not suitable for Hive?

A. Data summary (number of user clicks per day/week, click ranking)

B. Non-real-time analysis (log analysis, statistical analysis)

C. Data mining (user behavior analysis, interest division, regional display)

D. Real-time online data analysis

正解：D 解答を投票する

出題：10

When developing applications in the FusionInsight HD security version, the keytab file can be used for Kerberos security authentication.

A. True

B. False

正解：A 解答を投票する

H13-723試験無料問題集「Huawei HCIP-Big Data Developer V1.0 認定」