ACA-BigData1 試験問題を無料オンラインアクセス

Resource is a particular concept of MaxCompute. If you want to use user-defined function UDF or MapReduce, resource is needed. For example: After you have prepared UDF, you must upload the compiled jar package to MaxCompute as resource. Which of the following objects are MaxCompute resources? (Number of correct answers: 4) Score 2

• A.Archive: Recognize the compression type according to the postfix in the resource name
• B.Tables: Tables in MaxCompute
• C.Jar: Compiled Java jar package
• D.ACL Policy
• E.Files

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.False
• B.True

There are three types of node instances in an E-MapReducecluster: master, core, and _____ .
Score 2

• A.zero-load
• B.gateway
• C.agent
• D.task

By integrating live dashboards, DataV can present and monitor business data simultaneously. This data-driven approach enables for well-organized data mining and analysis allowing the user to seize new opportunities that otherwise might remain hidden. It can support wide range of databases and data formats. Which of the following options DataV does not support?

• A.Static data in CSV and JSON formats
• B.Oracle Database
• C.MaxCompute Project
• D.Alibaba Cloud' s AnalyticDB, ApsaraDB

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.truncate table t_test;
• B.desc t_test
• C.alter table t_test add columns (comments string);
• D.select count(*) from t_test;