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1. Which of the following specifications of AnalyticDB supports tiered storage of cold and hot data?

2. Alibaba Cloud DTS (Data Transmission Service) is a file migration tool.

3. 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?

4. 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.

5. Which of the following is NOT true, regarding the sensitive data management feature provided by Data Management (DMS)?

6. Which of the following is the lowest recovery point objective (RPO) for Database Backup Service?

7. Why is ApsaraDB for PolarDB better than other traditional database engines? (The number of answer: 3)

8. Which database utility is used for data migration and synchronization?

9. Which of the following tasks cannot be completed by using Advanced Database & Application Migration (ADAM)?

10. Which of the following is not a component of the PolarDB-0 architecture in Apsara Stack?