Which of the following scenarios are GeminiDB suitable for? (Multiple choice)

• A.Need super write performance
• B.Requires independent expansion of computing resources and storage resources
• C.Need to support data models such as documents, wide tables, data structures, time series, etc.
• D.Data is required to be redundant across AZ to ensure reliability

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Which of the following services is not a required service for the full-stack exclusive solution?

• A.EVS
• B.SDR
• C.VPN
• D.SMN

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Which of the following is a function of the Huawei Cloud Distributed Cache DCS service?

• A.Mass transaction transactions
• B.Horizontal expansion of the database
• C.Asynchronous decoupling between modules
• D.Key-Value data cache

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The value of blockchain is to build trust between organizations that do not trust each other, reduce transaction costs, improve transaction efficiency, and promote mutual trust. Which of the following descriptions about the blockchain is wrong?

• A.Blockchain features: distributed ledger, written into the ledger through multi-party consensus, cannot be tampered, traceable, open and transparent
• B.Blockchain is a versatile technology that can replace databases and the Internet.
• C.HUAWEI CLOUD blockchain platform BCS is open, easy to use, efficient, and secure
• D.Blockchain value: promote trust, reduce transaction costs, and improve efficiency

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Which of the following statements about the UML state diagram is correct?

• A.Change in state. Triggered by internal and external events
• B.The flow chart we often say is the state diagram
• C.State diagram shows the migration relationship of different classes
• D.The states in the state diagram can be arranged in chronological order

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