最新なAlibaba Cloud ACA-BigData1問題集（77題）、真実試験の問題を全部にカバー！

質問 1：
Machine Learning Platform for Artificial Intelligence (PAI) node is one of the node types in DataWorks business flow. It is used to call tasks created on PAI and schedule production activities based on the node configuration. PAI nodes can be added to DataWorks only _________ .
Score 2
A. after PAI experiments are created on PAI
B. after PAI service is activated
C. after MaxCompute service is activated
D. Spark on MaxCompute Machine Learning project is created
正解：A

質問 2：
If a task node of DataWorks is deleted from the recycle bin, it can still be restored.
A. False
B. True
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. False
B. True
正解：A

質問 4：
Assume that Task 1 is configured to run at 02:00 each day. In this case, the scheduling system automatically generates a snapshot at the time predefined by the periodic node task at 23:30 each day.
That is, the instance of Task 1 will run at 02:00 the next day. If the system detects the upstream task is complete, the system automatically runs the Task 1 instance at 02:00 the next day.
Score 1
A. False
B. True
正解：B

質問 5：
Scenario: Jack is the administrator of project prj1. A new team member, Alice (already has an Alibaba Cloud account [email protected]), applies for joining this project with the following permissions: view table lists, submit jobs, and create tables. Which of the following SQL statements is useless:
Score 2
A. grant List, CreateTable, CreateInstance on project prj1 to user aliyun$alice@aliyun;
B. flush privileges;
C. use prj1;
D. add user [email protected];
正解：B

質問 6：
DataV is a powerful yet accessible data visualization tool, which features geographic information systems allowing for rapid interpretation of data to understand relationships, patterns, and trends. When a DataV screen is ready, it can embed works to the existing portal of the enterprise through ______.
A. Jar package imported after the release
B. URL after the release
C. URL in the preview
D. MD5 code obtained after the release
正解：B

質問 7：
_______ 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. Master
B. Task
C. Gateway
D. Core
正解：A

質問 8：
Where is the meta data(e.g.,table schemas) in Hive?
Score 2
A. Stored along with the data in HDFS
B. Stored in the RDBMS like MySQL
C. Stored in ZooKeeper
D. Stored as metadata on the NameNode
正解：B