Alibaba Cloud ACA-BigData1 問題集

質問 1：
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. False
B. True
正解：A

質問 2：
A Log table named log in MaxCompute is a partition table, and the partition key is dt. Anew partition is created daily to store the new data of that day. Now we have one month's data, starting from dt='20180101' to dt='20180131', and we may use ________ to delete the data on 20180101.
A. drop partition log (dt='20180101')
B. alter table log drop partition(dt='20180101')
C. truncate table where dt='20180101'
D. delete from log where dt='20180101'
正解：B

質問 3：
Synchronous development in DataWorks provides both wizard and script modes.
Score 1
A. False
B. True
正解：B

質問 4：
If the DataWorks(MaxCompute) tables in your request belong to two owners. In this case, Data Guard(DataWorks component) automatically splits your request into two by table owner.
Score 1
A. False
B. True
正解：B

質問 5：
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.
Score 1
A. False
B. True
正解：A

質問 6：
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 7：
MaxCompute takes Project as a charged unit. The bill is charged according to three aspects: the usage of storage, computing resource, and data download respectively. You pay for compute and storage resources by the day with no long-term commitments.
Score 1
A. False
B. True
正解：A

質問 8：
MaxCompute can coordinate multiple users to operate one project through ACL authorization. The objects that can be authorized by ACL include ______. (Number of correct answers: 3) Score 2
A. Procedure
B. Project
C. Resource
D. Table
正解：B,C,D