Alibaba ACA-BigData1 Exam Questions Instant Access

Question 1

You are working on a project where you need to chain together MapReduce, Hive jobs. You also need the ability to use forks, decision points, and path joins. Which ecosystem project should you use to perform these actions?

AApache HUE

BApache Zookeeper

CApache Oozie

DApache Spark

Answer : C

Question 2

In MaxCompute, you can use Tunnel command line for data upload and download. Which of the

following description of Tunnel command is NOT correct:

Score 2

AUpload: Supports file or directory (level-one) uploading. Data can only be uploaded to a single table
or table partition each time.

BDownload: You can only download data to a single file. Only data in one table or partition can be
downloaded to one file each time. For partitioned tables, the source partition must be specified.

CResume: If an error occurs due to the network or the Tunnel service, you can resume transmission of
the file or directory after interruption.

DPurge: Clears the table directory. By default, use this command to clear information of the last three
days.

Answer : B

Question 3

DataWorks provides two billing methods: Pay-As-You-Go (post-payment) and subscription (prepayment). When DataWorks is activated in pay-as-you-go mode, Which of the following billing items will not apply?

Score 2

AShared resource groups for scheduling and Data Integration instances

BBaseline instances generated by Intelligent Monitor and Data Quality checks

CTask nodes created by developer

DCalls and execution time of APIs compiled in DataService Studio

Answer : C

Question 4

MaxCompute is a fast and fully-managed TB/PB-level data warehousing solution provided by Alibaba

Cloud. Which of the following product features are correct? ______ (Number of correct answers: 3)

Score 2

ADistributed architecture

BHigh security and reliability

CMulti-level management and authorization

DEfficient transaction processing

EFast real-time response

Answer : A, B, E

Question 5

In a scenario where a large enterprise plans to use MaxCompute to process and analyze its data, tens

of thousands of tables and thousands of tasks are expected for this project, and a project team of 40

members is responsible for the project construction and O&M. From the perspective of engineering,

which of the following can considerably reduce the cost of project construction and management?

Score 2

ADevelop directly on MaxCompute and use script-timed scheduling tasks

BUse DataWorks

CUse Eclipse

DUse a private platform specially developed for this project

Answer : B

Question 6

When we use the MaxCompute tunnel command to upload the log.txt file to the t_log table, the t_log is a partition table and the partitioning column is (p1 string, p2 string). Which of the following commands is correct?

Atunnel upload log.txt t_log/p1='b1'', p2='b2'

Btunnel upload log.txt t_log/(p1='b1'', p2='b2')

Ctunnel upload log.txt t_log/p1='b1'/p2='b2'

Answer : A

Question 7

A Log table named log in MaxCompute is a partition table, and the partition key is dt. Anew partition is created daily to store the new data of that day. Now we have one month's data, starting from dt='20180101' to dt='20180131', and we may use ________ to delete the data on 20180101.

Adelete from log where dt='20180101'

Btruncate table where dt='20180101'

Cdrop partition log (dt='20180101')

Dalter table log drop partition(dt='20180101')

Answer : D

Alibaba ACA Big Data Certification ACA-BigData1 Exam Questions