Which of the following options are the main challenges facing general e-commerce platforms? (Multiple choice)

• A.Security is difficult to guarantee
• B.Responding to the high risk of business surges
• C.Lack of data support for business decisions
• D.Poor user experience

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Huawei's public cloud and private cloud both use FusionSphere solution.

• A.True
• B.False

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On the topological diagram of HUAWEI CLOUD Application Operation and Maintenance, as shown by the arrow in the figure below, the circle is divided into three segments, but the length of the three segments is different. What does this mean?

• A.Three faults are monitored
• B.All instances of the service have failures, and the number of failures is different
• C.There are three Tomcat instances, but the load is uneven among the instances
• D.The microservice was called three times

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Under the microservice architecture model, developers are not free to choose development techniques to provide API services.

• A.True
• B.False

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Which of the following options are the main features of the serverless architecture? (Multiple choice)

• A.Functions are generally stateless and idempotent
• B.NoOps
• C.Service-level automatic elastic scaling
• D.Event-driven model

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