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

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

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Which of the following problems can be solved by Huawei Cloud Distributed Database Middleware DDM Service? (Multiple choice)

• A.Database distributed expansion
• B.Hotspot data cache
• C.Mass data transactions
• D.Mass data migration

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AOS (Application Orchestration Service) in the Micro Service Cloud Application Platform (ServiceStage) enables the deployment of complex distributed systems in one click.

• A.True
• B.False

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What are the advantages of microservices? (Multiple choice)

• A.Different technology stacks can be used to build services
• B.Lightweight protocol, HTTP protocol communication can be used
• C.The architecture can be flexibly extended
• D.Microservices are a silver bullet, suitable for various business scenarios

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Which of the following options are the challenges of traditional application operation and maintenance in cloud scenarios? (Multiple choice)

• A.Difficulty in analyzing distributed application problems in cloud scenarios
• B.Unable to grasp the user's real experience, poor application experience leads to loss of users
• C.Unable to get application logs
• D.There are many traditional operation and maintenance tools, and the use and maintenance costs are high

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