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Alibaba Cloud ACA-BigData1 Exam Dumps - Actual Questions Answers

ACA Big Data Certification Exam

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ACA-BigData1 Questions and Answers

Question # 1

Which of the following Hadoop ecosystem componets can you choose to setup a streaming log

analysis system?(Number of correct answers: 3)

Score 2


Apache Flume


Apache Kafka


Apache Spark


Apache Lucene

Question # 2

Which of the following is not proper for granting the permission on a L4 MaxCompute table to a

user. (L4 is a level in MaxCompute Label-based security (LabelSecurity), it is a required MaxCompute

Access Control (MAC) policy at the project space level. It allows project administrators to control the

user access to column-level sensitive data with improved flexibility.)

Score 2


If no permissions have been granted to the user and the user does not belong to the project, add the

user to the project. The user does not have any permissions before they are added to the project.


Grant a specific operation permission to the user.


If the user manages resources that have labels, such as datasheets and packages with datasheets,

grant label permissions to the user.


The user need to create a project in simple mode

Question # 3

MaxCompute tasks contain computational tasks and non-computational tasks. The

computational tasks require actual operations on data stored in the table. MaxCompute

parses the task to obtain its execution plan, and submits the task for execution. The noncomputational

tasks require substantial reading of and modification to metadata

information. Therefore, the task is not parsed, and no execution plan is provided. The

task is directly submitted for execution. The latter one has a faster response speed than

the former one. Which of the following operations on the table t_test is a computational



desc t_test


alter table t_test add columns (comments string);


select count(*) from t_test;


truncate table t_test;

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