ACA-BigData1問題集、Alibaba Cloud実際の試験問題

質問 1

When odpscmd is used to connect to a project in MaxCompute, the command ______ can be executed to view the size of the space occupied by table table_a.
Score 2

A. desc table_a;

B. show table table_a;

C. size table_a;

D. select size from table_a;

正解: A

質問 2

MaxCompute SQL is suitable for processing less real-time massive data, and employs a syntax similar to that of SQL. The efficiency of data query can be improved through creating proper indexes in the table.

A. True

B. False

正解: B

質問 3

In each release of E-MapReduce, the software and software version are flexible. You can select multiple software versions.
Score 1

A. True

B. False

正解: B

質問 4

DataWorks can be used to create all types of tasks and configure scheduling cycles as needed. The supported granularity levels of scheduling cycles include days, weeks, months, hours, minutes and seconds.
Score 1

A. True

B. False

正解: B

質問 5

An enterprise uses Alibaba Cloud MaxCompute for storage of service orders, system logs and management data. Because the security levels for the data are different, it is needed to register multiple Alibaba Cloud accounts for data management.
Score 1

A. True

B. False

正解: B

質問 6

In DataWorks table permission system, you can revoke permissions only on the fields whose security level is higher than the security level of your account.
Score 1

A. True

B. False

正解: A

質問 7

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. 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

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

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

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

正解: A,C,D

質問 8

_______ instances in E-MapReduce are responsible for computing and can quickly add computing power to a cluster. They can also scale up and down at any time without impacting the operations of the cluster.
Score 2

A. Core

B. Task

C. Master

D. Gateway

正解: C

Alibaba Cloud ACA Big Data Certification - ACA-BigData1 模擬練習