ACA Big Data Certification Exam - ACA-BigData1 Exam Practice Test

Question 1

There are multiple connection clients for MaxCompute, which of the following is the easiest way to configure workflow and scheduling for MaxCompute tasks?
Score 2

A. Use DataWorks

B. No supported tool yetc

C. Use Intelij IDEA

D. Use MaxCompute Console

Correct Answer: A

Question 2

DataWorks can be used to develop and configure data sync tasks. Which of the following statements are correct? (Number of correct answers: 3) Score 2

A. Clean-up rules can be set to clear or preserve existing data before data write

B. Some of the columns in source tables can be extracted to create a mapping relationship between fields, and constants or variables can't be added

C. For the extraction of source data, "where" filtering clause can be referenced as the criteria of incremental synchronization

D. The data source configuration in the project management is required to add data source

Correct Answer: A,B,D

Question 3

A start-up company wants to use Alibaba Cloud MaxCompute to provide product recommendation services for its users. However, the company does not have much users at the initial stage, while the charge for MaxCompute is higher than that of ApsaraDB RDS, so the company should be recommended to use MaxCompute service until the number of its users increases to a certain size.
Score 1

A. True

B. False

Correct Answer: A

Question 4

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 task?

A. desc t_test

B. alter table t_test add columns (comments string);

C. select count(*) from t_test;

D. truncate table t_test;

Correct Answer: C

Question 5

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?
Score 2

A. Spark

B. Oozie

C. Zookeeper

D. HUE

Correct Answer: B

Question 6

commark is an open-source framework that functions on the service level to support data processing and analysis operations. Equipped with unified computing resources and data set permissions, Spark on MaxCompute allows you to submit and run jobs while using your preferred development methods.
Which of the following descriptions about Spark on MaxCompute is NOT correct:
Score 2

A. Spark on MaxCompute provides you with native Spark Web UIs.

B. Spark on MaxCompute has a separate permission system which will not allow users to query data without any additional permission modifications required.

C. Different versions of Spark can run in MaxCompute at the same time.

D. Similar to MaxCompute SQL and MaxCompute MapReduce, Spark on MaxCompute runs in the unified computing resources activated for MaxCompute projects.

Correct Answer: C

Question 7

In MaxCompute, if error occurs in Tunnel transmission due to network or Tunnel service, the user can resume the last update operation through the command tunnel resume;.
Score 1

A. True

B. False

Correct Answer: A

Question 8

Which of the following Hadoop ecosystem componets can you choose to setup a streaming log analysis system?(Number of correct answers: 3) Score 2

A. Apache Flume

B. Apache Kafka

C. Apache Lucene

D. Apache Spark

Correct Answer: A,C,D

Alibaba Cloud ACA Big Data Certification - ACA-BigData1 Exam Practice Test

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