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Q: 1
Which of the following is not a relational database?
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Q: 2
Which of the following is the most efficient backup in ApsaraDB for MongoDB?
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Q: 3
Which of the following architectures are supported by ApsaraDB for Redis Enhanced Edition (Tair)? (Number of correct answers: 3)
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Q: 4
PolarDB for MySQL archive databases use log-structured merge-trees (LSM trees) and the Zstandard (ZSTD) data compression algorithm to increase the data compression ratio. How much storage can be saved, at most?
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Q: 5
Which of the following statements about Data Transmission Service (DTS) migration scenarios is NOT true?
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Q: 6
PolarDB for MySQL allows you to deploy a cluster across multiple zones. Compared with single-zone clusters, multi-zone clusters have better disaster recovery capabilities and can withstand data centre- level faults.
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Q: 7
Each PolarDB cluster consists of one primary node and one or more read-only nodes. The system only support manually switch over services from the primary node to a read-only node.
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Q: 8
Alibaba Cloud DTS (Data Transmission Service) is a file migration tool.
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Q: 9
You can purchase more read-only nodes after you have created a cluster. If the primary node fails, the system automatically promotes the read-only node with the highest failover priority to become the new primary node while restoring the faulty node.
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Q: 10
Alibaba Cloud DTS (Database Transmission Service) only supports MySQL databases.
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