HCIP-Big Data Developer V1.0 - H13-723 Exam Practice Test

Question 1

To create a table through HBase's createTable method, what parameters must be passed in?

A. Table names and columns

B. Table name and column family

C. Table name

D. Can be empty

Correct Answer: B

Question 2

When Flume writes into HDFS, what are the file generation methods? (multiple choice)

A. Set the size of a single file. When the file size reaches the set value, the old file will be closed and the new data will be written into the new file

B. Set the file generation time interval. When the time interval is reached, the old file will be closed and the new data will be written into the new file

C. Set the number of events stored in a single file. When the number of events stored in the file reaches the set value, the old file will be closed and the new data will be written to the new file

D. According to the source file name, directly generate the file

Correct Answer: A,B,C,D

Question 3

In which of the following is the MapReduce task finally executed?

A. AppMaster

B. NodeManager

C. container

D. ResourceManager

Correct Answer: C

Question 4

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. 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)

B. 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)

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) }. val result = femaleData.filter(line => line._2> 120) result.collect().map(x => x._1 + ' , ' + x._2).foreach(println)

Correct Answer: A,B

Question 5

HBase filters can set column names or column values as filter conditions, and support multiple filters to be used together.

A. True

B. False

Correct Answer: A

Question 6

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

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

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

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

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

Correct Answer: C

Question 7

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

Correct Answer: A

Question 8

Which distributed computing frameworks can the Hive component of FusionInsigt HD run on? (multiple choice)

A. Streaming

B. HDFS

C. Spark

D. MapReduoe

Correct Answer: C,D

Question 9

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

Correct Answer: A

Question 10

In Streaming application development, which interface does Bolt use to send Tuples?

A. emit

B. execute

C. nextTuple

D. open

Correct Answer: B

Question 11

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. Counter application: for example, counting the number of people logged in to a certain website

D. Get the latest N data: for example, get the latest 10 comments on a Weibo

Correct Answer: A,B

Huawei HCIP-Big Data Developer V1.0 - H13-723 Exam Practice Test

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