Alibaba Cloud ACA-BigData1 Actual Free Exam Questions & Community Discussion
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.
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Correct Answer: B
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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.
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Correct Answer: B
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DataService Studio in DataWorks aims to build a data service bus to help enterprises centrally manage private and public APIs. DataService Studio allows you to quickly create APIs based on data tables and register existing APIs with the DataService Studio platform for centralized management and release. Which of the following descriptions about DataService Studio in DataWorks is INCORRECT?
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Correct Answer: A
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Alibaba Cloud Elastic MapReduce (E-MapReduce) is a big data processing solution to quickly process huge amounts of data. Based on open source Apache Hadoop and Apache Spark, E-MapReduce flexibly manages your big data use cases such as trend analysis, data warehousing, and analysis of continuously streaming data.
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Correct Answer: A
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Your company stores user profile records in an OLTP databases. You want to join the serecords with web server logs you have already ingested into the Hadoop file system.
What is the best way to obtain and ingest these user records?
What is the best way to obtain and ingest these user records?
Correct Answer: B
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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.
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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.
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Correct Answer: A
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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.
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Correct Answer: A
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Where is the meta data(e.g.,table schemas) in Hive?
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Correct Answer: C
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