Alibaba Cloud ACA-BigData1 Actual Free Exam Questions & Community Discussion
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.
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Correct Answer: B
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DataWorks provides powerful scheduling capabilities including time-based or dependency-based task trigger mechanisms to perform tens of millions of tasks accurately and punctually each day based on DAG relationships. It supports multiple scheduling frequency configurations like: (Number of correct answers: 4) Score 2
Correct Answer: A,B,C,E
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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.
Correct Answer: D
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Apache Spark included in Alibaba E-MapReduce(EMR) is a fast and general-purpose cluster computing system. It provides high-level APIs in Java, Scala, Python and R, and an optimized engine that supports general execution graphs. It also supports a rich set of higher-level tools. Which of the following tools does not be included in Spark?
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Correct Answer: C
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commark is an open-source framework that functions on the service level to support data processing and analysis operations. Equipped with unified computing resources and data set permissions, Spark on MaxCompute allows you to submit and run jobs while using your preferred development methods.
Which of the following descriptions about Spark on MaxCompute is NOT correct:
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Which of the following descriptions about Spark on MaxCompute is NOT correct:
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Correct Answer: A
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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 ______.
Correct Answer: B
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In MaxCompute command line, if you want to view all tables in a project, you can execute command:
______.
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______.
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Correct Answer: D
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Your company stores user profile records in an OLTP databases. You want to join these records 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?
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Score 2
Correct Answer: B
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